Apps Like PPGTestData for iPhone and iPad
PPGTestData screenshots
Ranked alternatives
Showing 41–60 of 1,000 ranked alternatives.
Five Bells
Mark Gould
Ring to mark time and shifts
Track time with traditional or simplified bell sequences. Set hourly bell strikes or schedule quiet periods. Configure bell sounds and manage alerts for watch changes. Sync with other devices for consistent timing.
RANDOM.ORG
Randomness and Integrity Services Ltd
Generate random numbers and verify their authenticity
Generate random numbers using atmospheric noise and certified true randomness. Flip coins from Ancient Rome to 27 modern currencies. Roll dice with customizable sides. Select random items from lists. Share results directly. No ads or in- purchases.
HeartMe: Mental Health
长珠 谷
Track heart rate and monitor daily progress
Track heart rate by placing finger on camera. Measure daily heart rate and view history with HRV technology. Access educational content on heart . Follow customizable workout programs for home or on-the-go exercise. Set and monitor fitness goals.
Ships Bell Clock & Duty Bells
Alchemic Apps LLC
Ring chimes on demand
Track time with a ship's chime that cycles every four hours. Set specific watches for patterns. Mute based on location or selected watches. Play Reveille, Retreat, and Taps sounds as needed. Sync chimes across compatible iOS devices.
The Oscillator
Kymatica AB
Generate tones with oscillators and noise
Create and manipulate sound using two oscillators and one noise generator. Adjust frequencies in Hz or MIDI notes. Apply lowpass filters individually to each . Use panning for spatial effects.
Watch Tracker
Tom Kerrigan
Sync time with time
Synchronizes with an atomic clock to compare time with real time. Users tap a button when their matches the 's time. The records differences, displays graphs, and calculates seconds gained or lost per day using -fit analysis.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.