Chronal vs Metrognomicon

Chronal is an Android metronome and tuner app for beginner and advanced musicians. Its timing tools include beat and subdivision visualization, tap tempo, custom time signatures, and an editor for creating rhythms. Two synchronized metronomes support polyrhythms, and conductor mode combines metronome and tuner functions. The app includes seven sound packs and can play audio files at custom tempos. A fullscreen mode uses large visuals intended to be visible from a distance. The tuner supports transposition for any instrument and tuning to a custom frequency. It can detect BPM from percussion through the microphone in real time, and provides an A4 reference tone with adjustable frequency. Chronal is ad-free, open source, and funded by donations. It is available through F-Droid and Google Play, with source code on GitHub. The listed F-Droid version requires Android 6.0 or newer. F-Droid lists microphone permission for use while the app is in use, while Google Play reports that the developer declares no data collection or sharing. Chronal is free; the product pages provide no stated support channel.

Metrognomicon is a free iPhone metronome for practicing music that changes tempo. It plays ordered tempo segments and can switch automatically between them. Set each segment by beat count or elapsed time, then choose looping or a single run that stops at the end. Tempo settings span 40 to 240 BPM, entered with a slider or tap tempo. Six click sounds are available, and an optional count-off plays the final four beats before every tempo change. The interface lists light, dark and Brushed Metal themes. The maker describes the app for classical players, students working on difficult passages and musicians practicing pieces with tempo changes. Metrognomicon runs on iPhone, makes no network connections and stores sequences and preferences on the device, supporting offline use. The App Store listing limits it to iPhone. Support is available by email at [email protected]; problem reports should include the device model, iOS version and app version. The website uses Vercel Web Analytics for aggregate visits without analytics cookies or cross-site tracking.