Vibration Meter

The accelerometer measures how the phone's own body shakes. The reading depends on whether it lies on something or is held; to compare measurements, put the phone on the same surface each time.

The instrument uses the phone's accelerometer and shows the value in m/s².

• A large number, readable at arm's length.

• A chart of the last minutes — you can see it rise or fall.

• Minimum, average and maximum per session, reset with one button.

• A threshold with sound: an alert when the value goes above it.

• A table of everyday equivalents to compare your reading against.

• No ads. Under a megabyte. Works without internet.

The app sends anonymous usage statistics; you can turn this off in settings.

Independent development: one person builds and maintains this app. A letter to xmaxxp@gmail.com is read by that person, not by a support desk.