BestForAndroid Tools
29 browser-based Android tools that run locally. Diagnose your phone, inspect APKs, generate Wi-Fi QR codes, clean photo metadata, and convert anything useful without installing another app.
- Private by default
- Works offline
- No sign-up
- No unnecessary uploads
- Runs in your browser
Popular tools
Start with the checks people reach for most often.
Screen Tester
Find dead pixels, stuck pixels, burn-in, and touch tracking issues before they become expensive guesses.
- Fullscreen
- Touch test
- No upload
Sensor Viewer
Read accelerometer, gyroscope, orientation, compass, light, and proximity data live from your device.
- Runs locally
- Requires permission
APK Inspector
Open an APK to inspect its manifest, permissions, SDK versions, and app metadata on-device.
- No upload
- On-device
GPS Tester
Check your GPS fix, coordinates, altitude, and reported accuracy in real time.
- Runs locally
- Requires permission
Browse by category
Diagnostics
Check hardware, sensors, screens, speakers, cameras, and device behavior.
Screen Tester
Test your display for dead pixels and check that touch responds everywhere.
Touch Test
Map multitouch points and drag to find dead zones or ghost touches.
Sensor Viewer
Read your accelerometer, gyroscope, magnetometer and more, live.
GPS Tester
Check your GPS fix, coordinates and reported accuracy in real time.
Speaker & Mic
Test each speaker channel and confirm your microphone is picking up sound.
Vibration
Fire the vibration motor with different patterns to confirm it works.
Camera & Flash
Preview your front and rear cameras and toggle the flashlight.
Refresh Rate
Measure your screen's real refresh rate in frames per second.
IMEI Checker
Validate a 15-digit IMEI with Luhn and decode its TAC to a device.
Secret Codes
Browse USSD and dialer codes by brand, each tagged for risk.
Dev
Inspect APKs, map API versions, test intent links, and work with Android development data.
APK Inspector
Open an APK to read its manifest, permissions and SDK levels.
Version & API
Map any Android version to its API level and codename in a tap.
Permissions
Look up exactly what each Android permission grants an app.
Intent Builder
Build and test deep links and intents without writing the boilerplate.
ProGuard Rules
Generate ProGuard and R8 keep rules for your classes and members.
Vector ↔ SVG
Convert between Android vector drawables and plain SVG both ways.
JWT Decoder
Decode a JSON Web Token to read its header, claims and expiry.
ADB / Fastboot
Fill the parameters and copy the exact ADB or Fastboot command.
Network
Generate QR codes, scan codes, look up DNS records, calculate subnets, and inspect MAC address vendors.
Wi-Fi QR
Generate a QR code so guests can join your network in one scan.
QR Scanner
Scan QR codes and barcodes live with your device camera.
DNS Lookup
Query A, AAAA, MX, TXT and more over DNS-over-HTTPS.
Subnet Calc
Calculate subnets, masks, host ranges and broadcast addresses.
MAC Lookup
Look up the manufacturer behind any MAC address or OUI.
Media
Inspect image metadata, clean files before sharing, and work with color.
Utility
Encode, decode, hash, convert timestamps, and handle everyday Android-adjacent tasks.
Why use BestForAndroid Tools?
Built for quick checks, not data collection. Everything possible runs on-device in your browser.
Private by default
Tools run locally in your browser wherever the platform allows. Your input stays on your device.
No account walls
Open any tool and use it immediately. No sign-up, no email, no paywall, no nag screens.
No unnecessary uploads
Files and checks stay on-device whenever the browser allows. Nothing is sent to a server to be processed.
Works offline
Installed as a Progressive Web App, most tools keep working once loaded, with no connection needed.
About BestForAndroid Tools
Most Android utilities online are bloated, ad-heavy, or ask you to upload files just to read them. BestForAndroid Tools are built for the opposite: quick checks that run locally in your browser whenever possible. If you flash ROMs, repair phones, decode hardware identifiers, or build apps, these 29 free utilities are for you. Nothing you type is uploaded.
Use them to test hardware, inspect app files, verify network details, clean media metadata, and handle everyday Android troubleshooting without installing another app. The whole site is a Progressive Web App, so it loads instantly, keeps working without a connection, and installs to your home screen like a native app.
Five categories of tools
- Diagnostics: test the screen, sensors, GPS, speakers, vibration, camera and refresh rate, plus an IMEI checker and the secret codes database.
- Dev: inspect APKs, map versions to API levels, look up permissions, build intents and ProGuard rules, convert vectors, and assemble ADB commands.
- Network: generate Wi-Fi QR codes, scan QR and barcodes, look up DNS records, calculate subnets, and look up MAC address vendors.
- Media: view and strip photo EXIF metadata and work with color, from Material palettes to WCAG contrast.
- Utility: encode and decode text, hash strings and files, convert Unix timestamps, and run Android unit conversions.
Frequently asked questions
Are these tools free?
Yes. Every tool is completely free, with no sign-up, no ads, and no usage limits.
Do they work offline?
Yes. After your first visit the site is cached as a Progressive Web App, so it keeps working with no connection and can be installed to your home screen.
Is my data private?
Completely. All calculations and lookups run on your own device against bundled data. No IMEI, command, or other input is ever transmitted to a server.
Are you affiliated with Google or phone makers?
No. BestForAndroid Tools is an independent community project and is not affiliated with Google, Samsung, Xiaomi, or any other manufacturer. Device data is best-effort and clearly labeled.