Test visual acuity with Landolt rings.
The app allows users to test visual acuity up to 2.0 on high-definition displays. It measures acuity from 0.01 to 2.0 based on the Landolt ring standard.
Showing 1–20 of 1,000 ranked alternatives.
Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA.
Measure PD with TrueDepth Camera
Measure pupillary using iPhone's TrueDepth Camera for accurate results. Display real-time measurements for both near and far sight. Save and share PD values for eyeglasses or VR headset setup.
Masahiro Ueno
Measure speed without a device.
The app measures speed using a mobile device. Users set a distance, then tap START and STOP to record measurements.
Tatsuo Fujiwara
Record and track trends
Record and associate it with symptoms like runny nose or sore throat. View trends through automatic graphs. Share records and graphs via LINE or email. Manage multiple users' records within the .
Fast Builder Limited
Track data and set goals
Track data including weight, BMI, steps, water intake, distance, calories burned, standing hours, workouts, flights climbed, heart rate, and rest. Set goals and monitor progress. Syncs with Apple for comprehensive data overview.
Vicki Partridge
Tap when screen turns green
Test by tapping when the screen changes from red to green. Measure responses in milliseconds. Play Classic Test and Lights Out modes. Track progress and compare scores across sessions.
Dirkes Medical, PLLC
Test vision with a simple swipe
Check vision with a swipe-based test that measures distance automatically using face detection. Test each eye individually with an adaptive algorithm. Results indicate visual acuity without requiring additional equipment.
Stichting Yellow Riders
React to color words and track response
Color recognition test allows users to select the color of written words. Measures reaction time and displays results in a graph. Available in English, French, Spanish, German, and Dutch.
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