★★★★★
Average rating on the App Store. Apple doesn't publish how many ratings each star has.
This app isn't in any of our charts yet.
- Fixed crash on iOS 18 - Increased minimum iOS version to 15 - Updated website links - Updated copyright
Use your iPhone's high-frame-rate camera to measure the input-to-output latency of your text editor, device, game console, or television. Simply record a video containing the button press and the resulting effect on the screen. Is It Snappy? provides a frame-accurate scrubbing UI where the precise input and output times can be marked. The difference in milliseconds is displayed. With Is It Snappy?, the responsiveness of a device, text editor, display, or video game can be objectively quantified.