ResoKit

ResoKit is an offline music practice toolkit for musicians who want the essentials in one calm, focused app — tuner, metronome, timer, and local recording. No account. No ads. No internet required for core features. Whether you are warming up at home, rehearsing before a lesson, or logging a short practice session, ResoKit keeps the tools you need on your device. TUNER • Real-time pitch detection with a clear in-tune / sharp / flat indicator • Instrument presets: guitar, bass, ukulele, violin, banjo, and chromatic • Tuning preset library with favorites • Adjustable A4 reference, in-tune tolerance, and needle smoothing METRONOME • Set BPM manually or use tap tempo • Time signature and subdivision options • Accent on the first beat • Click sound choices, volume control, and optional haptic feedback on beat PRACTICE TOOLS • BPM tap — find a tempo by tapping in rhythm • Tone generator — play reference tones (sine or triangle) • Frequency reference table — look up note frequencies • Practice timer — countdown or stopwatch with optional session labels • Session history — review saved practice sessions on your device LOCAL RECORDER • Record short practice clips to private app storage • Playback with optional loop • Rename clips and manage your recording library • Standard and high recording quality options DESIGNED FOR PRIVATE, OFFLINE USE • Core features work without an internet connection • Microphone access is used only for pitch detection and optional recording • Audio is processed and stored locally on your device • Practice sessions and recordings stay in private app storage • Light, dark, and system theme support PERMISSIONS (WHY WE ASK) • Microphone — tuner and recorder only; not used for anything else • Vibration — optional metronome haptic feedback ResoKit is a utility app for everyday practice — not a substitute for professional tuning equipment in every environment. Pitch detection works best in a reasonably quiet space, with the microphone close to your instrument. Questions or feedback: [email protected]