Skip to main content
MSI MSI · Not Charging · Kaul Heritage City

MSI Laptop
Not Charging
in Kaul Heritage City

Expert diagnosis & repair for Not Charging on your MSI device in Kaul Heritage City. Free doorstep pickup, genuine parts & 90-day warranty.

✓ ₹350 Inspection (refunded if you proceed with repair) ✓ Free Doorstep Pickup ✓ Same-Day Repair ✓ 90-Day Warranty ✓ All MSI Models

Open 9 AM – 9 PM · 7 days · ₹350 inspection fee (refunded if you proceed with repair)

Technician probing a computer motherboard with a multimeter and soldering iron Technician brushing dust off an opened laptop motherboard with a cleaning brush
Xigox technicians at the repair bench
Symptom Checker

Is Your MSI Device Showing These Signs?

Common symptoms of Not Charging on MSI devices. Recognise 2 or more? Book a ₹350 inspection (refunded if you proceed with repair) now.

Charging cable doesn't stay securely connected

Laptop won't charge even with original charger

Battery percentage not increasing while plugged in

Charging port physically damaged or bent

Charger or charging port gets unusually hot

Charging only works at certain cable angles

Don't Delay — Not Charging Gets Worse Over Time

Unaddressed hardware issues worsen and can lead to secondary damage, escalating repair costs significantly.

Book Inspection (₹350)
Root Cause Analysis

Why Does Not Charging Happen on MSI Devices?

Knowing the root cause ensures a precise repair — not just a temporary fix.

Physical Wear

Repeated plug/unplug cycles wear out charging port pins and the internal connector socket.

Dust & Debris

Lint, dust and foreign particles accumulate inside the port, blocking electrical contact.

Power Surge

Voltage spikes from faulty chargers or unstable power supply damage the charging IC.

Mechanical Damage

Inserting cables at wrong angles or with force bends or breaks port pins internally.

Cost Estimate

MSI Not Charging Repair Cost in Kaul Heritage City

Transparent pricing · ₹350 inspection fee (refunded if you proceed with repair) first · Pay only after approval

Repair TypeEstimated CostWarranty
Port Cleaning & Re-solder ₹549 - ₹1,199 1 Month
Charging Port Repair ₹549 - ₹1,199 1 Month
Charging Port Repair ₹549 - ₹1,199 1 Month
Charging Port Repair ₹549 - ₹1,199 1 Month
Port Cleaning & Re-solder ₹549 - ₹1,199 1 Month
Port Cleaning & Re-solder ₹549 - ₹1,199 1 Month

Final cost confirmed after ₹350 inspection (refunded if you proceed with repair). Work starts only with your approval.

Get Exact Quote

Why Us?

Why Choose Xigox for MSI Laptop Not Charging in Kaul Heritage City?

With 1,00,026+ successful repairs and a 4.9-star rating, Xigox is an independent MSI repair specialist serving Kaul Heritage City. Conveniently located near Vasai Road Station.

90-Day Parts Warranty

Every repair backed by a written 90-day warranty. Same fault recurs? We fix it free of charge.

Same-Day Turnaround

Most MSI Laptop Not Charging jobs in Kaul Heritage City are completed same-day. Urgent service available for critical cases.

Full Transparency

We quote before starting work. No hidden fees. You pay exactly what you were quoted.

Lifetime Post-Repair Support

Free WhatsApp support for any questions about your MSI Laptop Not Charging after repair — always.

Free Pickup & Drop

Collection and return anywhere in Kaul Heritage City at no charge for lab-based MSI work — we don't bill for convenience.

Transparent Pricing

₹350 inspection fee (refunded if you proceed). Written quote before any MSI Laptop Not Charging work begins.

1,00,026+
Repairs Completed

Since 2011

4.9 ★
Average Rating

9,727+ reviews

90 Days
Repair Warranty

Parts & labour

30 Min
Avg Response

For common issues

Free
Pickup & Drop

₹350 inspection fee

2011
Est. Since

15+ yrs in Palghar

Who repairs your device

Repaired in-house by Xigox technicians

Your MSI is handled by Xigox technicians from start to finish. It is never handed on to another shop. Work that needs the repair bench is done at our workshop in Virar West.

Board-level faults are traced with a microscope, a multimeter and a soldering station before any part is replaced, and parts are fitted only after you approve the quote.

We don't open your personal files during a repair. When a job needs access to your data, such as data recovery or a Windows reinstall, we ask you first.

  • Repaired in-house, not outsourced
  • Quote approved by you before work starts
  • Your files stay private
  • Microscope and board-level tools
  • Genuine or OEM-grade parts
  • 90-day warranty on repairs
Technician inspecting a laptop motherboard under a microscope at the repair bench Technician testing a laptop mainboard with a multimeter beside a Xigox-branded monitor Technician brushing dust off an opened laptop motherboard with a cleaning brush Technician inspecting a laptop motherboard under a microscope at the repair bench
Xigox technicians at the repair bench.
Our Process

How We Fix MSI Not Charging

Step-by-step from booking to delivery — complete transparency, no surprises

01

Tell Us the Problem

Call, WhatsApp or book online. Tell us about the Not Charging on your MSI laptop or computer in Kaul Heritage City. No technical expertise needed.

02

Free Pickup & Drop

We pick up your MSI laptop or computer from your Kaul Heritage City address at no transport cost. Bring it to us or we come to you.

03

₹350 Inspection

A MSI specialist examines your laptop or computer and identifies the exact root cause of the Not Charging. Full written report provided — ₹350 fee refunded if you proceed with repair.

04

Transparent Quote

We share a detailed repair quote. Work begins only after your explicit approval — no hidden charges, no surprises.

05

Professional Repair

Our engineers fix the Not Charging using OEM-grade MSI parts. A 12-point quality checklist is completed before your laptop or computer is returned.

06

90-Day Warranty + Delivery

Your MSI laptop or computer is returned to your Kaul Heritage City address with a written 90-day warranty. Same fault recurs? We fix it free of charge.

Customer reviews

What Customers Say About MSI Not Charging in Kaul Heritage City

4.9/5 · 12 reviews shown

See all 9,727+ reviews

MSI Katana 15 — MSI Keyboard Repair

“Needed MSI Keyboard Repair for my MSI Katana 15 — Xigox technicians handled it professionally with a warranty.”

Xigox reply: Thank you for trusting Xigox with your MSI repair.

T Tanvi Bhatt Goregaon · 26 Jul 2026 9

MSI GF63 Thin — MSI Motherboard Repair

“Wasn't sure Xigox serviced my MSI Motherboard Repair, but they were fully equipped for the MSI GF63 Thin and fixed it fast.”

Xigox reply: Thank you for trusting Xigox with your MSI repair.

S Simran Kaur Kandivali · 24 Jul 2026 11

MSI Katana 15 — MSI Motherboard Replacement

“Excellent MSI Motherboard Replacement service for my MSI Katana 15. Diagnosed quickly and used a proper replacement part.”

Xigox reply: Thank you for trusting Xigox with your MSI repair.

A Ananya Bose Kurla · 23 Jul 2026 2

MSI GF63 Thin — MSI Power Jack Repair

“Needed MSI Power Jack Repair for my MSI GF63 Thin — Xigox technicians handled it professionally with a warranty.”

Xigox reply: Thank you for trusting Xigox with your MSI repair.

M Meera Pillai Malad · 21 Jul 2026 4

MSI GF63 Thin — MSI WiFi Card Replacement

“Booked MSI WiFi Card Replacement for my MSI GF63 Thin online. Doorstep pickup and clear communication throughout.”

Xigox reply: Thank you for trusting Xigox with your MSI repair.

P Priya Menon Chembur · 15 Jul 2026 10

MSI Raider GE78 HX — MSI Virus Removal

“Needed MSI Virus Removal for my MSI Raider GE78 HX — Xigox technicians handled it professionally with a warranty.”

Xigox reply: Thank you for trusting Xigox with your MSI repair.

D Devansh Gupta Borivali · 16 Jul 2026 9
Page 1 / 2

← Swipe or tap dots to browse →

Repair examples

Recently Repaired Laptops

View All Recent Repairs

Dell

XPS 13 9340

Fixed
Issue
Laptop turns off randomly. Overheating during use.
Solution
Deep cleaned fans, replaced thermal paste. Fixed overheating issue.
Malad West 2 Hours
  • Overheating
  • Dell
  • Thermal

MacBook

Pro M3 14-inch

Fixed
Issue
Screen shows vertical lines, external display works fine.
Solution
Replaced LCD panel and display cable. Updated display drivers.
Virar West 3 Hours
  • Screen
  • MacBook
  • Display

Dell

Latitude 5430

Fixed
Issue
Battery draining from 100% to 0% in 45 minutes. Dell diagnostics showing battery wear 85%.
Solution
Replaced battery with genuine Dell cell. Calibrated battery controller. Restored to 7+ hours backup.

Technician's note

Corporate laptop with heavy daily use. Battery had exceeded 800 charge cycles.

Borivali West 45 Minutes
  • Battery
  • Dell
  • Corporate

Acer

Aspire 5 A515

Fixed
Issue
Laptop extremely slow with original 1TB HDD. Boot time over 3 minutes.
Solution
Upgraded to 512GB NVMe SSD. Cloned all data. Installed fresh Windows 11 with drivers. Boot time reduced to 8 seconds.

Technician's note

HDD was healthy — kept as secondary storage. Massive performance improvement.

Dadar West 2 Hours
  • SSD
  • Acer
  • Upgrade

MacBook

Air M2

Fixed
Issue
Water spilled on keyboard. Laptop dead, no response to charger. Corrosion visible on logic board.
Solution
Ultrasonic cleaning of logic board. Replaced 2 corroded ICs and damaged keyboard flex cable. Full functionality restored.

Technician's note

Water had not reached SSD — all data intact. Board-level repair saved customer from logic board replacement.

Malad West 6 Hours
  • Water Damage
  • MacBook
  • Board Repair

HP

Pavilion x360

Fixed
Issue
Right hinge broken, screen wobbling. Back panel cracked near hinge mount.
Solution
Replaced both hinges with reinforced metal hinges. Repaired back panel crack with epoxy bonding.

Technician's note

Common issue in x360 convertible models. Both hinges replaced for balanced tension.

Goregaon West 2 Hours
  • Hinge
  • HP
  • Convertible

FAQ

FAQs — MSI Not Charging in Kaul Heritage City

Everything you need to know before booking your inspection

10 questions answered

We use OEM or OEM-grade components and tell you which one your quote covers before work starts. We do not fit unbranded aftermarket parts or recycled pulls sold as new — part quality is the single biggest factor in whether a laptop repair lasts, so it is not somewhere we cut cost. Customers near Vasai Road Station in Kaul Heritage City get our fastest response times.
That is what the ₹350 inspection is for. Symptoms overlap constantly — the same visible behaviour can come from three different components. We test rather than guess, then show you what we found before quoting. If the actual fault turns out to be something cheaper, the quote reflects that. We've been serving Palghar district for over 15 years.
Usually not for long. Left alone, most faults of this kind put stress on neighbouring components and turn a contained repair into a board-level one. If you cannot bring it in immediately, tell us the symptoms on WhatsApp and we will tell you honestly whether it can wait a few days or should be powered down now. Customers across Kaul Heritage City (401202) enjoy priority same-day scheduling.
Yes — Xigox specialises in MSI Not Charging across Kaul Heritage City. Our experienced technicians diagnose and fix the problem efficiently, using OEM-quality parts and backed by a 90-day warranty. Free doorstep pickup is available in Kaul Heritage City — call or WhatsApp +91 74997 61196. We also serve Papdy, Navghar Vasai, Vasai Gaon, so you can recommend us to neighbours too.
Most MSI Not Charging issues in Kaul Heritage City are resolved the same day — typically within 2–4 hours of pickup. We provide an accurate time estimate during the ₹350 inspection (refunded if you proceed with repair) so you're never left guessing. Our service covers the full 401202 postal area in Kaul Heritage City.
Common causes of MSI Not Charging include physical impact, wear and tear, manufacturing defects, water damage, overheating, or software conflicts. Xigox technicians perform a thorough diagnosis to identify the root cause and fix it permanently rather than applying a temporary patch. Customers near Vasai Road Station in Kaul Heritage City get our fastest response times.
Every repair at Xigox — including MSI Not Charging fixes — is covered by a 90-day warranty. If the same problem recurs within 90 days, we repair it free of charge. Our warranty is provided in writing and applies to all repairs across Kaul Heritage City and Mumbai MMR. Trusted by customers throughout Palghar — rated 4.9★ across 9,727+ reviews.
The cost to fix MSI Not Charging in Kaul Heritage City varies by laptop model and severity. Xigox charges ₹350 for inspection — refunded if you proceed with the repair. A transparent written quote before any work begins. You're never charged until you approve the repair — no hidden fees, ever. Trusted by customers throughout Palghar — rated 4.9★ across 9,727+ reviews.
Xigox repairs MSI Not Charging on Apple, Dell, HP, Lenovo, Asus, Acer, MSI, Microsoft, Samsung and Toshiba, and more. Our engineers are trained on brand-specific procedures and we stock genuine-grade parts for the most common models, so most repairs in Kaul Heritage City are completed the same day. Customers across Kaul Heritage City (401202) enjoy priority same-day scheduling.
It depends on the age and value of the laptop. As a rule, if the repair costs less than a third of a comparable replacement and the rest of the hardware is healthy, repairing is worth it. After the inspection we tell you the honest repair cost and what a replacement would run, so the comparison is yours to make — we do not push a repair that is not worth doing. We've been serving Palghar district for over 15 years.

Still have questions?

Send us your question on WhatsApp or call — a technician will answer.

MSI Laptop Repair in Kaul Heritage City — Xigox

Most Kaul Heritage City repair shops handle MSI the same way they handle every other make. We do not. Our MSI technicians are trained specifically on MSI Laptop architecture — schematics, boardview files and firmware behaviour — which is why our first-time fix rate on MSI work is so much higher than a general shop's.

Every MSI component we fit is OEM-grade and batch-tested before it goes into your Laptop — no aftermarket substitutes, no recycled pulls sold as new. You see the part cost and the labour cost separately on the estimate before we start, and the ₹350 inspection comes off the bill if you go ahead.

We actively serve the entire 401202 postal area within Palghar district, ensuring same-day response for every repair request. ₹350 inspection fee (refunded if you proceed with repair). Located near Vasai Road Station, our service coverage extends across Kaul Heritage City and all surrounding localities. In addition to Kaul Heritage City, we also provide doorstep repairs and free pickup for lab work for customers in Papdy, Navghar Vasai, Vasai Gaon and other nearby areas.

Doorstep part replacement (battery, keyboard, screen, SSD, RAM) is available across Kaul Heritage City. For chip-level and motherboard repairs, we provide free pickup and drop — confirming within 15 minutes of your booking. Most common faults are resolved same-day. For complex repairs, we provide a realistic timeline and keep you updated throughout.

Your MSI Laptop leaves with a written 90-day warranty covering both parts and labour. Same fault back inside that window and we redo it free — no argument, no diagnostic fee. WhatsApp support stays open afterwards for any question about the repair.

Service Hours

Monday – Sunday · 9 AM – 9 PM

Open on all public holidays

Service Area

Kaul Heritage City & surrounding Mumbai areas

Doorstep repairs + free pickup for lab work

Contact Us

+91 74997 61196

info@xigox.com

Our Guarantee

90-day warranty on all repairs

Free re-repair if same fault recurs

Product lines

MSI Series We Cover for Not Charging repair in Kaul Heritage City

Xigox keeps MSI parts and service documentation for 9 MSI series, so Not Charging repair on a Creator, GF, Katana and MAG machine is handled by someone who has seen that chassis before. We regularly take in Creator, GF, Katana and MAG, along with MEG, Modern, Prestige and Raider units for Not Charging repair in Kaul Heritage City. Specific MSI models on our current service list include MSI GF63 Thin, MSI Katana 15 and MSI Raider GE78 HX. If your MSI model is not listed, it is almost certainly still covered — send us the model number on the base sticker and we will confirm parts availability before you book.

  • Creator
  • GF
  • Katana
  • MAG
  • MEG
  • Modern
  • Prestige
  • Raider
  • Stealth

MSI Katana

The MSI Katana 15 is part of MSI's Katana line — mid-tier gaming laptops offering a dedicated GPU and high-refresh display at a more accessible price than MSI's flagship Raider/Titan lines.

MSI Katana 15

  • MSI Katana 15
  • MSI Katana 17
  • MSI Katana GF66
  • MSI Katana GF76

MSI Raider

The MSI Raider GE78 HX is part of MSI's Raider line — MSI's flagship high-performance gaming laptops, with the strongest available GPU configurations, high-refresh displays, and MSI's most aggressive cooling.

MSI Raider GE78 HX

  • MSI Raider GE76
  • MSI Raider GE77
  • MSI Raider GE78 HX
  • MSI Raider GE68 HX

MSI GF

The MSI GF63 Thin (GF-series) is part of MSI's entry-level gaming laptop range — a budget-friendly path into dedicated-GPU gaming, thinner and lighter than MSI's higher-tier gaming lines.

MSI GF63 Thin

Not Charging Repair for All MSI Models in Kaul Heritage City

Select your specific MSI model for a more targeted diagnosis page

Not Charging Repair for Other Brands in Kaul Heritage City

We fix Not Charging across all major laptop and computer brands with the same quality and warranty

Explore more services

More Repair & Tech Services Near Kaul Heritage City

Same technicians · Free pickup · 90-day warranty across all services.

₹350 Inspection (refunded if you proceed with repair) · 1,00,000+ Repairs · 4.9 ★ · 90-Day Warranty

Fix Your MSI Device's
Not Charging Today

₹350 Inspection (refunded if you proceed with repair) · Expert repair for Not Charging · 90-day warranty

Serving Kaul Heritage City and all of Mumbai MMR · Open 9 AM – 9 PM daily

Comparison

Xigox vs Other MSI Not Charging Shops in Kaul Heritage City

What you get with Xigox in Kaul Heritage City, side by side.

FeatureXigoxOther shops
Experienced Technicians Trained & VerifiedVaries; ask who will work on the device
Genuine / OEM Parts OEM-Quality PartsVaries; ask which part will be fitted
90-Day Warranty Written CertificateVaries; ask for the warranty in writing
Diagnosis / Inspection ₹350, credited to the repairVaries; ask what the diagnosis costs
Same-Day Turnaround Kaul Heritage City — Most RepairsVaries; ask for a time in writing
Free Doorstep Pickup Kaul Heritage City — FreeVaries; ask whether pickup is free
Transparent Pricing Written Quote FirstVaries; ask for a written quote first
Live WhatsApp Updates Real-time Repair StatusVaries; ask how you will get updates

Xigox charges ₹350 for inspection — credited to your repair cost if you go ahead.

MSI Not Charging Repair in Kaul Heritage City — Professional, Reliable, and Affordable

Why waste time on aggregators? Get direct service without middleman markup with Xigox. Every day, people in Kaul Heritage City need trustworthy MSI Not Charging Repair — and Xigox delivers. Having completed thousands of repairs across Mumbai, our technicians combine speed with precision for MSI Not Charging Repair. From startups to family homes in Kaul Heritage City, we've earned the trust that 4.9★ ratings validate.

Pickup & Drop Across Kaul Heritage City

We repair devices for homes, offices and colleges across Kaul Heritage City book us with free pickup and drop. You get a written quote before any work, OEM-grade parts and a 90-day warranty, for a single MSI or a whole office. When you choose Xigox for the repair in Kaul Heritage City, you get the same service and warranty as every other customer.

Data Security During MSI Not Charging Repair

Your private information is fully protected during your issue. Residents across Kaul Heritage City rely on Xigox because we follow strict data privacy protocols. During the issue, your photos, emails, and passwords are completely secure. In cases where OS reinstallation is required, we will always inform you first.

After-Repair Speed MSI Not Charging Repair

After a successful the repair in Kaul Heritage City, most customers notice immediate performance improvements: quicker application loading, cooler operating temperatures, restored battery life, or a perfect display — depending on the specific repair. Xigox runs diagnostic tests before and after the repair in Kaul Heritage City to confirm the improvement.

Emergency MSI Not Charging Repair Available

Is your deadline today? Xigox offers priority this issue in Kaul Heritage City for critical situations. From an exam deadline and your MSI just crashed, our emergency service ensures your MSI is repaired within the same business day. Emergency this issue can be arranged including weekends in Kaul Heritage City. Just say 'priority' when calling and our team will fast-track your issue immediately.

Budget-Friendly MSI Not Charging Repair for Students & Educators

Are you a student in Kaul Heritage City? We know that a reliable MSI is critical for online classes. You get a written quote for the repair before any work starts, and our technicians suggest the lowest-cost fix that will last, such as a part repair instead of a full replacement. Mention your exam or submission date when you book and we plan the job around it. Stop letting hardware problems disrupt your studies — contact us for student-friendly the repair.

Fixed-Quote Policy for MSI Not Charging Repair

The biggest frustration about repair shops in Kaul Heritage City is surprise bills after the job is done. We've built our entire model around transparency. Before any work begins, our technician shares a written quote that covers everything. You see the exact cost — approve it or decline, no pressure. Our ₹350 inspection fee is fully refunded when you proceed with this issue.

Office MSI Not Charging Repair in Kaul Heritage City

Businesses across Kaul Heritage City trust our repair to maintain productivity. We offer AMC agreements, priority SLA turnaround, and a single point of contact. From a small team or an entire floor, Xigox manages the repair for your Kaul Heritage City workspace with GST invoices and complete service reports.

Budget-Friendly MSI Not Charging Repair in Kaul Heritage City

Expert issue shouldn't break the bank in Kaul Heritage City. Because we repair at the component level, we typically save customers 30% to 50% versus authorized brand service centres. You receive identical stellar quality for your MSI, but at a much fairer price. Get your free quote for this issue in Kaul Heritage City now.

Any MSI, Any Brand in Kaul Heritage City

Your MSI model doesn't limit what we can fix. Our technicians are brand-agnostic experts: HP, Dell, Lenovo, Asus, Acer, MSI, Toshiba, Samsung and Apple MacBook. Each brand has quirks in their assembly that our team knows well. Model-specific experience cuts diagnostic time and improves first-time fix rates.

Convenient Collection across Kaul Heritage City

Navigating traffic in Kaul Heritage City takes hours. To solve this, Xigox offers a no-hassle doorstep logistics service for this issue. Just drop your pin, and our secure courier will collect your MSI directly from you. Once the issue is finished, we safely return it in protective packaging. Enjoy total convenience without leaving your desk.

Make the smart choice for your MSI in Kaul Heritage City. Xigox: real technical skill, genuine components, no hidden costs, doorstep service — all guaranteed in writing. Thousands of Kaul Heritage City customers already have: call +91 74997 61196 for fast, affordable MSI Not Charging Repair in Kaul Heritage City.

Service area

MSI Not Charging Repair in Kaul Heritage City — Service Area & Coverage

Xigox provides msi not charging repair across Kaul Heritage City (PIN 401202), in the Palghar district of Vasai-Virar. Our doorstep pickup and on-site service cover the entire Kaul Heritage City area and the neighbourhoods around it.

Localities we cover in Kaul Heritage City: Vasai West, Vasai. Wherever you are in Kaul Heritage City, we can collect your device from your door and bring it back after the repair.

Our technicians regularly serve homes, societies and offices around Vasai Road Station, and along Kaul Heritage City Road and STV Road. If you're near any of these landmarks, same-day pickup for msi not charging repair is almost always available.

MSI Not Charging Repair near Kaul Heritage City

We also serve these nearby areas — tap your locality for local msi not charging repair:

MSI Not Charging Repair price in Kaul Heritage City — know it before you book

  1. 1Pick your device & issue
  2. 2See the real price range
  3. 3Free doorstep pickup in Kaul Heritage City

4.9 from 9,727 customer reviews across all repairs · upfront pricing · 90-day warranty

Before you book: have your device model and a quick description of the issue ready — it speeds up your quote.

Not sure what's wrong?

Find Your Fix by Symptom

Tell us what your device is doing — we'll point you to the right repair, with real pricing and next steps.

See all repair problems we fix

Nearest pickup point: Bhayandar West

~6.5 km from Kaul Heritage City. With free doorstep pickup you don't need to travel — this is our nearest pickup point.

Book a repair

MSI Not Charging Repair — Book Now

Free pickup · Genuine parts · 90-day warranty

Booking received

We'll call you within 1 hour to confirm your appointment and arrange doorstep pickup.

Inspection fee: ₹350

  • Credited to your total repair cost if you go ahead.
  • Still applies if the device can't be repaired or you decline the repair.

+91

Device type *

Inspection fee: ₹350

  • If you go ahead with the repair, the ₹350 is credited to your total repair cost.
  • If the device can't be repaired or you decide not to continue, the ₹350 inspection fee still applies.

Your details are used only to arrange this repair. By submitting, you agree to our Privacy Policy.

Call WhatsApp