Springlab
Coming soon to Google Play

Level & Compass

A bubble level and a compass that show how far you can trust each reading. Big, clear numbers, a vial drawn to scale, and nothing else on the screen.

Level at level: the screen glows jade at 0.0° The vial drawn to scale, tilted 3.1° Edge mode: a liquid horizon, Right side low Calibration: spin it half a turn Calibration result: own error removed and surface slope Compass: mark a bearing and follow it Magnet nearby: the compass warns you Compass in the light theme with the error wedge

What it does.

Everything below is in the app today. Nothing is promised for later.

Level

  • Lay the phone flat: the bubble moves in a vial drawn true to scale, a tick for each degree.
  • A dashed halo shows how accurate the reading is.
  • When it is level, the whole screen glows and the phone gives a gentle tap.
  • Stand it on an edge: a liquid horizon and plain words, “Right side low”.
  • Degrees or % slope. Hold to freeze a reading.

Flip calibration

  • No phone sensor is perfect from the factory.
  • Put the phone down on any flat spot, turn it half a turn, let go.
  • On most phones the screen shows your turn, live, up to 180°.
  • The result says how much error was removed, and which way your surface slopes. Undo if you like.

Compass

  • A dial that turns the short way round, with a shaded wedge for the possible error.
  • Mark a bearing and follow it: “Turn 24° right to 297°”.
  • Warns you when a magnet or metal nearby bends the reading.
  • Works flat or upright.

Free, and Pro

  • Free: everything above, with one small banner in Settings.
  • Pro, one payment: no ad, true north from your rough location (read once, on the phone), five more colours.
  • No account. No full-screen ads, ever.

Accuracy depends on your phone's sensors. Calibrate the level with the flip calibration, and keep the compass away from metal and magnets.

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