Gecko is a free, open-source time-travelling audio recorder for Android. It keeps a rolling in-memory buffer of microphone audio so you can save something that just happened, then optionally keep recording forward. Features: • Continuous listening into a ring buffer (foreground mic service) • Save the last 1 / 5 / 30 minutes, 2 / 6 hours, or everything held • Press-and-hold a duration chip to save history and keep recording • Settings for RAM budget and sample rate (8 / 16 / 44.1 kHz) • Exports WAV files to Music/Gecko via MediaStore • Restarts listening after reboot if it was left on • Multiple UI packs (Biolume, Sonar, Oxide, Volt) Privacy: • No ads, no analytics, no crash reporters • Audio stays on-device; nothing is uploaded • Microphone is used only while listening is enabled Battery notes: Defaults favour battery (8 kHz sample rate, power-saving mic mode, quiet notification). Raise sample rate in Settings when you need more fidelity. Source: https://github.com/anantdark/Gecko License: GPL-3.0-only
First release: Nov 8, 2026, 1 total release.
Most recent release: Nov 8, 2026.
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Releases
- Nov 8, 2026 1.0.7-build7## Gecko 1.0.7 (build 7) **Version code:** 7 **Commit:** [`9988465`](https://github.com/anantdark/Gecko/commit/9988465618747ee523ffb679ee888cfa63f98033) ### What's new - Add custom save duration, About settings, and clearer capture defaults. (9988465)