24+ CLIENT-SIDE MOBILE & DEVELOPER TOOLS

Free Android & Mobile Tools, Utilities & Calculators

Zero-latency, 100% private web utilities for mobile developers, designers, and creators. Every tool runs client-side with dedicated individual URLs.

Android & Mobile (8) Developer Tools (8) Calculators & Health (4) Converters (4)

Android & Mobile Design Tools

UI wireframe canvases, device frame screen simulators, screenshot resizers, and OS specifications.

NEW TOOL • IPHONE & ANDROID

Mobile View & Device Screen Simulator

Preview any web URL or uploaded app screenshot inside interactive iPhone 16 Pro (Dynamic Island) and Android Pixel 9 (hole-punch) realistic frames. Test responsive safe areas and mobile layouts.

iPhone Dynamic Island Android Pixel 9 Live URL / Iframe Screenshot Upload
Open Simulator
MATERIAL 3 EXPRESSIVE

Material 3 UI Canvas

Sketch Android Compose screens in the browser using real Material 3 Expressive components. Drag-and-drop Cards, FABs, Buttons, and App Bars, then export AI coding prompts.

Drag & Drop Light / Dark AI Prompt Export
Open Material 3 Canvas
iOS & Android

Screenshot Resizer (App Store & Play)

Generate exact 1242×2688 px (iPhone 6.5"), 2064×2752 px (iPad Pro), and 1080×2400 px (Android Phone) submissions.

Open Tool
OS Reference

Android Version & API Level Checker

Look up any Android version: API Level, dessert codename, release date, and Google Play target SDK compliance deadlines.

Open Tool
Display Calculator

Screen DPI & Density Bucket Calculator

Enter resolution & diagonal size to calculate exact PPI and identify drawable density buckets: mdpi, hdpi, xhdpi, xxhdpi.

Open Tool
Hidden Codes

Android Secret Dialer Codes Directory

20+ USSD diagnostic codes for Samsung, Pixel, and Xiaomi. Hardware tests, IMEI lookups, and engineering menus.

Open Tool
Asset Guide

Android App Icon Size Matrix

Complete dimension chart for all density buckets. Live icon preview at every size and multi-resolution PNG export.

Open Tool
Favicon Pack

PNG to Favicon Converter

Convert any PNG to multi-size .ico, Apple Touch Icon (180px), and PWA icons (192/512px). 100% in-browser.

Open Tool

Developer Tools

QR generators, data formatters, cryptography tools, and terminal builders.

WINDOWS DESKTOP APP • v1.0.0

AndroidRich API Editor

Lightning-fast native Windows REST & HTTP API client. Preloaded with free public APIs (JSONPlaceholder, DummyJSON, Weather, Crypto), instant startup under 1s, and 100% offline privacy with no sign-up.

Free Windows .exe Preloaded Sample APIs Dark Mode No Account Required
Download & Overview

Instant QR Code Generator

Generate high-resolution QR codes for websites, plain text, and phone numbers with PNG download.

Open Tool

WiFi "Scan to Connect" QR

Create a WiFi card guests can scan with their smartphone camera to join your network instantly.

Open Tool

JSON Formatter & Validator

Validate, prettify, and minify complex JSON payloads with syntax error detection and byte stats.

Open Tool

Strong Password Generator

Create cryptographically secure passwords client-side using native Web Cryptography API (CSPRNG).

Open Tool

Base64 Encoder & Decoder

Convert strings and UTF-8 payloads to and from Base64 encoding with live status verification.

Open Tool

SHA-256 Hash Generator

Compute instant cryptographic digests: SHA-256, SHA-512, and SHA-1 using Web Crypto API.

Open Tool

Unix Timestamp Converter

Convert Unix epoch seconds & milliseconds to UTC, Local Time, ISO 8601, and relative time.

Open Tool

ADB Command Generator

Terminal presets for wireless debugging, APK installation, logcat streaming, and screen recordings.

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Calculators & Health Tools

Step calculators, BMI metrics, age difference, and revenue estimators.

Step to Distance & Calories

Convert smartphone pedometer steps into exact walking distance (km/miles) and active calories burned.

Open Tool

BMI (Body Mass Index)

Calculate your Body Mass Index based on official WHO standards with healthy weight target range.

Open Tool

Age & Date Difference

Calculate exact age in years, months, and days with next birthday countdown and total life stats.

Open Tool

Ad Revenue & eCPM Estimator

Estimate mobile app earnings based on daily impressions, fill rate, and regional eCPM benchmarks.

Open Tool

Converters

DP, PX, color models, storage units, and certificate helpers.

DP ↔ PX Converter

Calculate physical pixels from DP across all density buckets: ldpi, mdpi, hdpi, xhdpi, xxhdpi, and xxxhdpi.

Open Tool

HEX to Compose & XML

Convert HEX and RGB colors into Jetpack Compose Color(0xFF...), Android XML, and Flutter code.

Open Tool

Storage Bits & Bytes

Convert between Bytes, KB, MB, GB, and TB with instant binary (1024) vs decimal (1000) switching.

Open Tool

Keystore SHA-1 / SHA-256

Keytool command generator for Firebase Auth, Google Sign-In, and Google Maps API certificate fingerprints.

Open Tool