Skip to main content
ASUS · Battery Draining Fast · Bandra West

ASUS Laptop
Battery Draining Fast
in Bandra West

Expert diagnosis & repair for Battery Draining Fast on your ASUS device in Bandra West. 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 ASUS Models

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

Technician testing a laptop mainboard with a multimeter beside a Xigox-branded monitor Technician probing a computer motherboard with a multimeter and soldering iron
Xigox technicians at the repair bench
Symptom Checker

Is Your ASUS Device Showing These Signs?

Common symptoms of Battery Draining Fast on ASUS devices. Recognise 2 or more? Book a ₹350 inspection (refunded if you proceed with repair) now.

Battery drains fully within 1–2 hours of normal use

Laptop charges extremely slowly or not at all

Battery percentage drops/jumps unexpectedly

Laptop overheats during routine daily tasks

Laptop shuts down unexpectedly even at 30%+

Battery visibly swollen, bulging or deformed

Don't Delay — Battery Draining Fast 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 Battery Draining Fast Happen on ASUS Devices?

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

Age & Cycle Wear

Li-ion batteries lose capacity after 300–500 charge cycles — normal part of battery ageing.

Incompatible Charger

Non-genuine or mismatched chargers cause irregular charging and accelerate cell degradation.

Overheating

Blocked vents or intensive workloads raise internal temperatures, stressing battery cells.

Liquid Damage

Moisture or water ingress into the battery compartment causes corrosion and swelling.

Cost Estimate

ASUS Battery Draining Fast Repair Cost in Bandra West

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

Repair TypeEstimated CostWarranty
Laptop & Computer CMOS Battery Issue — Basic fix ₹350 90 Days
Laptop & Computer CMOS Battery Issue — Standard fix ₹499 90 Days
Laptop & Computer CMOS Battery Issue — Advanced fix ₹999 90 Days
Laptop & Computer CMOS Battery Issue — Complex case ₹1,999 90 Days
Chromebook Battery Replacement — Basic fix ₹2,499 90 Days
Gaming Laptop Battery Replacement — Basic fix ₹2,499 90 Days

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 ASUS Laptop Battery Draining Fast in Bandra West?

With 1,00,329+ successful repairs and a 4.9-star rating, Xigox is an independent ASUS repair specialist serving Bandra West. Conveniently located near Carter Road.

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 ASUS Laptop Battery Draining Fast jobs in Bandra West 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 ASUS Laptop Battery Draining Fast after repair — always.

Free Pickup & Drop

Collection and return anywhere in Bandra West at no charge for lab-based ASUS work — we don't bill for convenience.

Transparent Pricing

₹350 inspection fee (refunded if you proceed). Written quote before any ASUS Laptop Battery Draining Fast work begins.

Repairs Completed
1,00,329+
Since 2011
Average Rating
4.9 ★
9,605+ reviews
Repair Warranty
90 Days
Parts & labour
Avg Response
30 Min
For common issues
Pickup & Drop
Free
₹350 inspection fee
Est. Since
2011
15+ yrs in Mumbai Suburban

Who repairs your device

Repaired in-house by Xigox technicians

Your ASUS 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 ASUS Battery Draining Fast

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

Tell Us the Problem

Call, WhatsApp or book online. Tell us about the Battery Draining Fast on your ASUS laptop or computer in Bandra West. No technical expertise needed.

Free Pickup & Drop

We pick up your ASUS laptop or computer from your Bandra West address at no transport cost. Bring it to us or we come to you.

₹350 Inspection

A ASUS specialist examines your laptop or computer and identifies the exact root cause of the Battery Draining Fast. Full written report provided — ₹350 fee refunded if you proceed with repair.

Transparent Quote

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

Professional Repair

Our engineers fix the Battery Draining Fast using OEM-grade ASUS parts. A multi-point quality checklist is completed before your laptop or computer is returned.

90-Day Warranty + Delivery

Your ASUS laptop or computer is returned to your Bandra West address with a written 90-day warranty. Same fault recurs? We fix it free of charge.

Customer reviews

What Customers Say About ASUS Battery Draining Fast in Bandra West

4.9/5 · 1 reviews shown

See all 9,605+ reviews

ASUS ROG Strix G16 — Data Recovery

“Hard drive on my ASUS ROG Strix G16 crashed completely. Xigox Juhu recovered ninety-eight percent of my files including five years of photos. They also upgraded me to SSD. Professional clean-room recovery at a reasonable price.”
P Pranav Deshpande Bandra West · 4 Jun 2024 41

Repair examples

Recently Repaired Laptops

View All Recent Repairs

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

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

Dell

Inspiron 15 5520

Fixed
Issue
Cracked LCD panel after laptop fell from desk. Screen showing lines and dead pixels on left side.
Solution
Replaced damaged 15.6-inch IPS LCD panel with genuine part. Tested display output and color calibration.

Technician's note

Used original Dell panel. Customer advised to use a laptop sleeve for protection.

Andheri West 2 Hours
  • Screen
  • Dell
  • LCD

HP

Pavilion Gaming

Fixed
Issue
Blue screen errors, random crashes during gaming.
Solution
Diagnosed RAM failure. Replaced faulty memory modules.
Borivali West 1 Hours
  • RAM
  • HP
  • Gaming

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

Lenovo

ThinkPad E14

Fixed
Issue
Multiple keys not responding after tea spill. Keyboard backlight also stopped working.
Solution
Replaced full keyboard module with backlit variant. Cleaned internal membrane and tested all keys.

Technician's note

Tea had corroded the membrane. Internal components were safe from further damage.

Thane West 1.5 Hours
  • Keyboard
  • Lenovo
  • Spill

FAQ

FAQs — ASUS Battery Draining Fast in Bandra West

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. Trusted by customers throughout Mumbai Suburban — rated 4.9★ across 9,605+ reviews.
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. Customers across Bandra West (400050) enjoy priority same-day scheduling.
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. Trusted by customers throughout Mumbai Suburban — rated 4.9★ across 9,605+ reviews.
Yes — Xigox specialises in ASUS Battery Draining Fast across Bandra West. 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 Bandra West — call or WhatsApp +91 74997 61196. Free pickup also available in Bandra, Pali Hill, Linking Road and surrounding areas.
Most ASUS Battery Draining Fast issues in Bandra West 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. Customers across Bandra West (400050) enjoy priority same-day scheduling.
Common causes of ASUS Battery Draining Fast 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. We've been serving Mumbai Suburban district for over 15 years.
Every repair at Xigox — including ASUS Battery Draining Fast 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 Bandra West and Mumbai MMR. Free pickup also available in Bandra, Pali Hill, Linking Road and surrounding areas.
The cost to fix ASUS Battery Draining Fast in Bandra West 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. Our service covers the full 400050 postal area in Bandra West.
Xigox repairs ASUS Battery Draining Fast 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 Bandra West are completed the same day. Customers across Bandra West (400050) 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 also serve Bandra, Pali Hill, Linking Road, so you can recommend us to neighbours too.

Still have questions?

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

ASUS Laptop Repair in Bandra West — Xigox

If you are looking for ASUS Laptop repair in Bandra West that is not a brand service centre, this is it. Xigox has run an independent ASUS bench since 2011, and our technicians work on ASUS boards and firmware every day rather than treating them as an occasional job. More than 1,00,000 repairs and a 4.9-star average rating sit behind that.

Every ASUS 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 400050 postal area within Mumbai Suburban district, ensuring same-day response for every repair request. ₹350 inspection fee (refunded if you proceed with repair). Located near Carter Road, our service coverage extends across Bandra West and all surrounding localities. In addition to Bandra West, we also provide doorstep repairs and free pickup for lab work for customers in Bandra, Pali Hill, Linking Road and other nearby areas.

Straightforward ASUS jobs — battery, keyboard, screen, SSD or RAM — are done at your address in Bandra West. Anything needing the microscope and hot-air station comes back to the lab, with free pickup and drop either way. We confirm within 15 minutes of booking and tell you honestly whether it is a same-day fix.

Every ASUS repair at Xigox is covered by a 90-day warranty on all parts and labour. If the same fault recurs within the warranty period, we fix it at no charge. Our after-repair WhatsApp support means we are always available to answer questions about your ASUS Laptop.

Service Hours

Monday – Sunday · 9 AM – 9 PM

Open on all public holidays

Service Area

Bandra West & 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

ASUS Series We Cover for Battery Draining Fast repair in Bandra West

Xigox keeps ASUS parts and service documentation for 10 ASUS series, so Battery Draining Fast repair on a ExpertBook, ExpertCenter, ProArt and ROG machine is handled by someone who has seen that chassis before. We regularly take in ExpertBook, ExpertCenter, ProArt and ROG, along with ROG Strix, TUF, Vivo and VivoBook units for Battery Draining Fast repair in Bandra West. Specific ASUS models on our current service list include Asus ROG, Asus TUF, Asus VivoBook and Asus ZenBook. If your ASUS 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.

  • ExpertBook
  • ExpertCenter
  • ProArt
  • ROG
  • ROG Strix
  • TUF
  • Vivo
  • VivoBook
  • Zen
  • ZenBook

ASUS VivoBook

The Asus VivoBook is Asus's mainstream consumer laptop line — everyday computing at an accessible price, Asus's answer to Dell Inspiron and Lenovo IdeaPad.

Asus VivoBook

  • ASUS VivoBook 14
  • ASUS VivoBook 15
  • ASUS VivoBook Go 14
  • ASUS VivoBook Pro 15
  • ASUS VivoBook S14
  • ASUS VivoBook S15

ASUS ZenBook

The Asus ZenBook is Asus's premium consumer laptop line — thinner, lighter, and better-built than VivoBook, Asus's direct competitor to the Dell XPS and HP Spectre.

Asus ZenBook

  • ASUS ZenBook 13 OLED
  • ASUS ZenBook 14 OLED
  • ASUS ZenBook 14 Flip OLED
  • ASUS ZenBook S 13 OLED
  • ASUS ZenBook Duo 14

ASUS ROG

The Asus ROG is part of Asus's ROG (Republic of Gamers) line — Asus's flagship gaming brand (laptop and desktop), known for high-refresh displays, aggressive cooling, and distinctive RGB-forward design.

Asus ROG

  • ASUS ROG Strix G16
  • ASUS ROG Strix Scar 15
  • ASUS ROG Strix Scar 17
  • ASUS ROG Zephyrus G14
  • ASUS ROG Zephyrus G15
  • ASUS ROG Flow X13

Battery Draining Fast Repair for All ASUS Models in Bandra West

Select your specific ASUS model for a more targeted diagnosis page

Battery Draining Fast Repair for Other Brands in Bandra West

We fix Battery Draining Fast across all major laptop and computer brands with the same quality and warranty

Areas, Roads & Landmarks We Cover in Bandra West

Free pickup & drop across all these neighbourhoods

Localities & neighbourhoods

  • Pali Hill
  • Bandstand
  • Bandra Reclamation
  • Bandra Kurla Complex (BKC)
  • Lucky Junction
  • Kherwadi

Roads & highways

  • Hill Road
  • Linking Road
  • Turner Road
  • S.V. Road
  • Carter Road
  • Chapel Road

Landmarks & famous places

  • Mount Mary
  • Mehboob Studio
  • Lilavati Hospital
  • National College
  • Bandra Fort

ASUS Battery Draining Fast Repair — All Locations

Explore more services

More Repair & Tech Services Near Bandra West

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 ASUS Device's
Battery Draining Fast Today

₹350 Inspection (refunded if you proceed with repair) · Expert repair for Battery Draining Fast · 90-day warranty

Serving Bandra West and all of Mumbai MMR · Open 9 AM – 9 PM daily

Comparison

Xigox vs Other ASUS Battery Draining Fast Shops in Bandra West

What you get with Xigox in Bandra West, 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 Bandra West — Most RepairsVaries; ask for a time in writing
Free Doorstep Pickup Bandra West — 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.

ASUS Battery Draining Fast Repair in Bandra West — Professional, Reliable, and Affordable

Why waste time on aggregators? Get direct service without middleman markup with Xigox. Poor battery life, unexpected shutdowns, or a ASUS that won't run without the charger — these are clear signs you need ASUS Battery Draining Fast Repair in Bandra West. Xigox uses only BIS-certified, capacity-matched battery packs — not counterfeit packs that last 3 months. Every ASUS Battery Draining Fast Repair in Bandra West includes a post-installation cycle test.

Top-Rated ASUS Battery Draining Fast Repair in Bandra West

There are many repair shops in Bandra West, however, Xigox stands out for this repair. We believe in complete transparency. Each repair begins with a thorough diagnostic inspection for ₹350, which is fully refunded if you proceed. No surprise fees — only expert repair in Bandra West.

Pickup & Drop Across Bandra West

We repair devices for homes, offices and colleges across Bandra West book us with free pickup and drop. You get a written quote before any work, OEM-grade parts and a 90-day warranty, whether it is one laptop or an office fleet. When you choose Xigox for this job in Bandra West, you get the same service and warranty as every other customer.

Rapid ASUS Battery Draining Fast Repair — Timeline

Wondering how fast Xigox can complete repair in Bandra West? Our standard process: First — call or WhatsApp +91 74997 61196 and our pickup technician reaches you within 2 hours. Then — ₹350 diagnostic pinpoints the issue. Step 3 — you approve the quote via WhatsApp — zero pressure. Step 4 — this repair is done using OEM-grade components by our engineers, usually within 2–4 hours. Step 5 — we return it to your Bandra West address with a quality report.

Genuine Parts for ASUS Battery Draining Fast Repair

Reliability matters for this job. Because of this, our team strictly use original-specification parts for your ASUS. Instead of counterfeit components, we use trusted supply chains. This is how we help your job stay durable, supported by our standard 90-day warranty.

Same-Day ASUS Battery Draining Fast Repair in Bandra West

We know you can't stay disconnected in Bandra West. We plan this repair for rapid turnaround. For most issues, our technicians finish the repair within hours. We arrange secure collection from your Bandra West home or office, execute the repair using precision tools, and deliver it back to you.

Trusted by Bandra West for ASUS Battery Draining Fast Repair

Numbers speak louder. Xigox maintains a 4.9-star rating from 9,605+ customer reviews from customers across Mumbai MMR. Common praise includes: honest pricing, fast turnaround, and genuine parts. What Bandra West customers value most: "Excellent this job, done same day with genuine parts." Become part of the growing community of satisfied Xigox customers in Bandra West.

Convenient Collection across Bandra West

Navigating traffic in Bandra West takes hours. To solve this, Xigox offers a no-hassle doorstep logistics service for this repair. Simply share your Bandra West address, and our secure courier will collect your ASUS directly from you. Once the repair is finished, we safely return it in protective packaging. Enjoy total convenience without leaving your desk.

All-Brand ASUS Battery Draining Fast Repair in Bandra West

Your ASUS 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.

Data Security During ASUS Battery Draining Fast Repair

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

Fixed-Quote Policy for ASUS Battery Draining Fast Repair

One of the most common complaints about repair shops in Bandra West is hidden charges after the job is done. Xigox operates differently. Before any work begins, our technician sends a WhatsApp quote covering parts and labour. There is zero ambiguity — the decision is entirely yours. The ₹350 diagnostic is credited 100% when you approve the repair.

Get it fixed properly in Bandra West. We bring together trained specialists, genuine components, transparent ₹350 diagnostics, and a written 90-day warranty on every ASUS Battery Draining Fast Repair. Join the thousands in Bandra West who trust us — call or WhatsApp +91 74997 61196 for doorstep convenience in Bandra West.

Service area

ASUS Battery Draining Fast Repair in Bandra West — Service Area & Coverage

Xigox provides asus battery draining fast repair across Bandra West (PIN 400050), in the Mumbai Suburban district of Mumbai. Our doorstep pickup and on-site service cover the entire Bandra West area and the neighbourhoods around it.

Localities we cover in Bandra West: Pali Hill, Bandstand, Bandra Reclamation, Bandra Kurla Complex (BKC), Lucky Junction, Kherwadi. Wherever you are in Bandra West, we can collect your device from your door and bring it back after the repair.

Our technicians regularly serve homes, societies and offices around Mount Mary, Mehboob Studio, Lilavati Hospital, National College and Bandra Fort, and along Hill Road, Linking Road, Turner Road, S.V. Road, Carter Road and Chapel Road. If you're near any of these landmarks, same-day pickup for asus battery draining fast repair is almost always available.

ASUS Battery Draining Fast Repair near Bandra West

We also serve these nearby areas — tap your locality for local asus battery draining fast repair:

ASUS Battery Draining Fast Repair price in Bandra West — know it before you book

  1. 1Pick your device & issue
  2. 2See the real price range
  3. 3Free doorstep pickup in Bandra West

4.9 from 9,605 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.

Nearest branch: BKC

~4.1 km from Bandra West. With free doorstep pickup you don't need to travel — this is our nearest branch.

Book a repair

ASUS Battery Draining Fast 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