Replicant303 Android 1.0.1

Low-latency analog bassline synthesizer and sequencer for Android.

APK: Replicant303-Android-1.0.1.apk — sideload on Android 8.0+ (arm64-v8a / x86_64).

AAB: Google Play Store App Bundle.

SHA256SUMS.txt: checksums for the attached binaries.

Built from 78fee65b0fd2f0be148b045d76cd6f2f85327be9 by GitHub Actions.
Install APK: adb install -r Replicant303-Android-1.0.1.apk

Replicant 303 Android 1.0.0

The first Android release of Replicant303: the TB-303 virtual-analog acid engine,
rebuilt for touch, USB MIDI and low-latency Android audio.

Highlights

Native C++20 303 voice: PolyBLEP saw/square, 4-pole diode ladder, interactive
envelopes, 60 ms slide and squelch accent.
Five distortion models: Poco Rat, Tube Drive, Hard Clip, Germanium Fuzz,
Wavefolder.
8 × 16-step sequencer with gate, accent, slide, swing and 1–16 length.
512-preset vault (8 banks × 64), deterministic GEN, STORE, and .midi
import/export with R303PRESET/1 patch metadata.
USB MIDI IN/OUT, MIDI 2.0 UMP translation on Android 13+, 24 PPQN clock,
start/stop, channel filter and live monitor.
Oboe / AAudio low-latency path, adaptive buffer, lock-free audio callback.
Two skins: TD-3 Green and Obsidian Red.
Adaptive phone/tablet Compose layout.
No network permission, no accounts, no proprietary content.

Host DSP suite: 206 checks passing.
Android unit tests: MIDI stream parser (4), UMP codec (6), preset wire (3),
preset file codec (4) — 17 total.
Debug and release APKs built for arm64-v8a and x86_64.
GitHub Actions: host suite and Android job both green on main and on tag 1.0.0.
Emulator verification: UI, playback, pattern edits, GEN/STORE persistence,
skin switching and MIDI screen; AAudio stream started in shared mode.
Promo: 48 s 1080p video generated from real emulator screenshots and a
soundtrack rendered by the native engine.

Latency measured on the verification emulator was ~110–125 ms in shared
AAudio mode; real-device exclusive-mode latency was not measured here. The app
reports the actual API, sharing mode, buffer and latency.
USB MIDI IN/OUT was verified through the Android MIDI service and host-side
queues; physical USB MIDI hardware was not available for an end-to-end test.
MIDI clock receive performs tempo estimation and pulse-stepped transport; it is
not a sample-accurate phase lock to an external DAW.

adb install -r Replicant303Android-1.0.0.apk

Requires Android 8.0 (API 26) or newer on a 64-bit device.

Full Changelog: https://github.com/DanimanX/Replicant303Android/commits/1.0.0