Flying Ruler: 3D-линейка
★ 4.4What it actually doesFlying Ruler is a ruler app that measures distances and angles by moving your device using accelerometer and gyroscope data; accurate enough for quick measurements as an alternative to a physical ruler, but requires calibration and depends on iPhone model.
Actually does
- ✓Измерение расстояния (инерционный метод)80% of reviews
- ✓Измерение углов (транспортир и 3D-угломер)15% of reviews
- ✓Несколько режимов измерения (линейка, рулетка, транспортир, угломер)20% of reviews
- ✓Усреднение нескольких измерений для повышения точности15% of reviews
Claimed, but not confirmed by reviews
- ⚠Режим дальномера (расстояние между стенами)
- ⚠Photo cloud
- ⚠Поддержка метрической и имперской системы
- ⚠Accessibility
Common complaints
- ✗Strong iPhone model dependency; older devices (6s, 6) measure inaccurately or don't work at all20% of mentions
«On iPhone 6, it shows some nonsense, it lies a lot»
- ✗Unpredictable accuracy and high sensitivity to hand tremor and uneven surfaces15% of mentions
«The ruler depends on the slightest irregularities»
- ✗Issues with automatic screen ruler scaling, lack of manual adjustment on some devices10% of mentions
«The on-screen ruler displays incorrectly!!! 12 Pro Max. But you can adjust the scale manually.»
- ✗Complex settings and modes system requiring instruction study and calibration20% of mentions
«The main thing is to figure out the settings and switch modes depending on the measurement you're taking»
- ✗Protractor does not display decimal degrees, error can be up to 1 degree5% of mentions
«The protractor has no decimal degrees. For degrees this is important.»
What people praise
- ★Impressive accuracy on modern iPhones (error 1-3 mm per meter, 0.3-0.4%)
«On iPhone 7 at short distances (around a meter) the error is usually just 1-3 mm!»
- ★Very practical: replaces tape measure when unavailable, convenient and quick
«Great app, very convenient to measure distance when you don't have a tape measure handy!»
- ★Innovative and intriguing operating principle (inertial navigation), impresses with its fresh approach
«Strange but it works ;) The app works, I don't know how, but it works!»
- ★Averaging function for multiple measurements increases accuracy to 0.3% and is very effective
«Averaging works really well on longer distances»
- ★Beautiful and convenient interface, good app design
«And it's done beautifully»