Overview
BaseConversion is a local-first, ad-free Android base converter built for programmers. Open it and start typing: binary / octal / decimal / hexadecimal fields stay in live two-way sync — no “convert” button. It supports big integers, two’s complement, and IEEE 754 floating-point bit-pattern visualization.
Kotlin Compose MVI
Key Features
- Integer mode: four live-synced base fields; arbitrary precision via
BigInteger; fixed widths 8/16/32/64 with signed two’s complement, signed/unsigned toggle, and out-of-range truncation with warnings - Float mode: type a decimal value and instantly see the float32 / float64 IEEE 754 bit patterns and stored values, including
NaN/±Infinity/-0.0 - Smart keyboard: custom in-app keypad that disables invalid keys per base with color-coded sections; long-press backspace for continuous delete; one-tap copy / paste with auto-detected
0x/0b/0oprefixes - Personalization: system/light/dark theme, accent colors, configurable default mode / base / width / precision, key sounds and haptics
- Details: bilingual UI (English & Chinese), monospace numerals; the only networked feature is checking updates via the GitHub Releases API
Tech Stack
Kotlin 2.0+ · Jetpack Compose (Material 3) · ViewModel + StateFlow (MVI) · Gradle Kotlin DSL · minSdk 29
The conversion algorithms live in a pure-Kotlin domain layer covered by JUnit tests; UI / data / domain layers are cleanly separated.
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