g1q

4-track audio recorder for Android with overdub support.

Features

• 4 independent tracks with arm/record/mute
• Overdub recording — hear existing tracks while recording new ones
• Waveform display per track
• Loopback latency calibration for tight overdubs
• WAV export to device Recordings folder

Usage

1. Calibrate — Tap "Calibrate" with no headphones so the phone speaker reaches the mic. This measures round-trip audio latency for tight overdubs.
2. Arm a track — Tap the "R" button on a track lane to arm it (turns red).
3. Record — Tap the red "R" in the transport bar. Recording starts from the beginning and plays back any existing tracks.
4. Stop — Tap "R" again in the transport bar to stop recording.
5. Play — Tap ">" to play all tracks from the beginning.
6. Overdub — Arm a different track and record again. You'll hear the previous tracks while recording.
7. Export — Tap "Export WAV" to mix all tracks into a single WAV file saved to Recordings/Multitrack/.

Build

./gradlew assembleDebug

Requires Android NDK (Oboe for low-latency audio).

Download

See Releases for APKs.