Mobile Development Tools
Essential calculators and references for iOS and Android app development
Screen Density Calculator
Convert between DPI, PPI, and density buckets (mdpi, hdpi, xhdpi, etc.). Calculate pixel density for any device.
Open ToolApp Icon Sizes
Complete reference for iOS and Android app icon size requirements. Get all the dimensions you need.
Open ToolTouch Target Calculator
Calculate minimum touch target sizes for accessibility. Ensure your UI elements meet Apple, Android, and WCAG guidelines.
Open ToolSafe Area Calculator
Calculate safe areas for notched devices. Get insets for iPhone, iPad, and Android devices.
Open ToolViewport Calculator
Reference viewport dimensions for different devices. Get CSS pixel dimensions for popular phones, tablets, and desktops.
Open ToolDeep Link Builder
Build iOS Universal Links and Android App Links. Generate configuration files and test your deep links.
Open ToolApp Store Character Counter
Count characters for app store descriptions with limits. Stay within iOS App Store and Google Play Store character limits.
Open ToolDevice Pixel Ratio Converter
Convert between CSS pixels and device pixels. Understand how pixel density affects your designs.
Open ToolMobile Data Usage Estimator
Estimate daily and monthly mobile data use for video, music, browsing, and social traffic patterns.
Open ToolPush Notification Payload Analyzer
Validate push payload size against APNs, FCM, and Web Push limits before delivery failures occur.
Open ToolApp Bundle Size Estimator
Forecast app download and installed footprint using binary composition, localization, and compression assumptions.
Open ToolBattery Drain Estimator
Estimate daily battery impact from screen time, CPU load, network activity, and GPS usage.
Open ToolMobile Development Resources
These tools help mobile developers create better user experiences across iOS and Android platforms. Understanding screen densities, touch targets, and platform-specific requirements is essential for building accessible, user-friendly mobile applications.
Screen Density & Resolution
Mobile devices come in various screen sizes and pixel densities. Understanding DPI (Dots Per Inch), PPI (Pixels Per Inch), and density-independent pixels (DP/PT) is crucial for creating crisp graphics and properly sized UI elements that work across all devices.
Touch Target Accessibility
Proper touch target sizing is essential for usability and accessibility. Both Apple's Human Interface Guidelines and Android's Material Design specify minimum sizes for interactive elements to ensure users can easily tap buttons and links.
Platform-Specific Guidelines
- iOS: Apple Human Interface Guidelines
- Android: Material Design Guidelines
- Accessibility: WCAG 2.1 Level AA compliance
Quick Reference
iOS Screen Scales
- @1x: Standard
- @2x: Retina
- @3x: Retina HD
Android Density Buckets
- ldpi: 0.75x
- mdpi: 1.0x (baseline)
- hdpi: 1.5x
- xhdpi: 2.0x
- xxhdpi: 3.0x
- xxxhdpi: 4.0x