BAOSP — Blind Android Open Source Project

An accessible Android operating system built from AOSP with a custom screen reader, TTS engine, and accessible launcher — designed for blind and visually impaired users.

Download — Latest Nightly Builds

Repo	Release	APKs
baosp	nightly	andrdscren-*.apk, aotts-*.apk
aoler	nightly	aoler-*.apk

Features

• Custom Screen Reader — andrdscren accessibility service, enabled by default
• SVOX Pico TTS — lightweight voice engine with 6 language voices, set as default
• Accessible Launcher — aoler home screen with linear layout and large touch targets
• Always-on Accessibility — screen reader and TTS active from first boot, no setup needed
• AOSP Base — built from Android 14 source with accessibility patches applied
• Open Source — Apache License 2.0

Installing APKs on your Android device (no ROM flash needed)

1. Download APKs from the nightly release links above
2. Transfer them to your device (email, cloud drive, or USB)
3. Install each APK — allow "unknown sources" if prompted
4. Screen reader: Settings → Accessibility → Downloaded services → andrdscren → enable
5. TTS engine: Settings → Language & input → Text-to-speech output → select AOTTS Pico
6. Launcher: Press Home → select aoler → tap Always

Build System

Workflow	What it does	Trigger
BAOSP Nightly Bundle	Builds screen reader + TTS APKs and posts them as a release	Every night + manual
BAOSP Full Build	Full AOSP system image with all apps baked in	Manual only

Running the full AOSP build

Go to Actions → BAOSP Full Build → Run workflow. This builds a complete flashable system.img with the screen reader, TTS engine, and launcher pre-installed and enabled by default.

The full AOSP build takes 3–6 hours on GitHub-hosted runners.

Repository structure

baosp/
├── .github/
│   └── workflows/
│       ├── baosp-build.yml     ← Full AOSP system image build (manual)
│       └── baosp-nightly.yml   ← Nightly APK bundle release (automatic)
├── patches/                    ← Accessibility patches applied to AOSP
├── device/                     ← Device overlays and configs
└── scripts/                    ← Local build helper scripts

Related repos

Repo	Description
andrdscren	Screen reader source
aotts	TTS engine source
aoler	Accessible home screen launcher

License

Based on AOSP — Apache License 2.0.