Calm Velthu Circle overview

Calm Velthu Circle is a breathing coach app built around a single, beautifully animated circle that expands and contracts to guide you through controlled breathing sessions. The core interaction is simple: watch the circle grow as you inhale, hold, then follow it back as you exhale. No complicated menus, no accounts, no internet connection required. Everything works offline and all your preferences are stored locally on your device. You can adjust breath patterns to match your needs — whether that is a quick stress reset during a busy afternoon or a longer wind-down session before sleep. The app supports several preset rhythms and lets you fine-tune inhale, hold, and exhale durations manually. A PIN lock keeps the app private. Haptic feedback pulses gently in sync with each breath phase, giving you a physical anchor when you close your eyes. The animated background and circle visuals are designed to feel calm and uncluttered, keeping the focus on your breathing rather than the screen. There are no ads, no subscriptions, and no registration. Open it, breathe, and close it.