ResoKit

ShouYine

About this app

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: [e-mail]