An objective answer, in seconds
Tremor Check turns your iPhone's built-in motion sensors into a precision vibration meter for whatever surface the phone is resting on — a desk, a table, a nightstand, a shelf, a washing machine. The sensors detect movement far smaller than you can feel, and the app tells you plainly what's happening.
Made to calm, not to alarm
- A steady green "This surface is still" — the answer you'll see most
- Brief bumps explained with everyday causes (a truck, the washing machine, a door)
- Continuous vibration measured with intensity and duration
- Apple Watch app: a tap on your wrist only when it's real
- 24-hour vibration log — see exactly what happened while you were away
- Free. No ads. No accounts. No tracking. Works completely offline.
Hecho para calmar
Apoya tu iPhone en cualquier superficie y mide exactamente cuánto vibra. Los sensores detectan movimientos mucho más pequeños de lo que puedes sentir. Gratis, privado, sin publicidad — y con alertas en tu Apple Watch solo cuando la vibración es real.
Important: Tremor Check verifies whether the surface your iPhone rests on is vibrating. It is not an earthquake detection or early-warning service. For official seismic alerts, rely on your regional civil protection services.