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.
- Doubles the width of the tap region at the edge of the screen for advancing by one frame.
- Internal changes for future compatibility.
Ratings and Reviews
This app is very intuitive! It's easy to scroll through the frames and mark input, output frames. Having a list of results with custom names is very convenient as well.
Only possible improvement would be to somehow show sound level at each frame too so that it's easier to find the exact frame that a key/button bottomed out. Not a big deal though as I could tell visually by how my finger would bend at the bottom of a press.
Awesome App, now you can measure snap
Does exactly what is says: let's you figure out if it's fast. Downloaded it and within a few minutes measured the latency on my Mac Book with iTerm! It also picked up the keyboard backlight.
The frame picking interface is almost perfect, but it should be slightly easier to go back a single frame. Not a big enough issue to dock a star though.
Wish there was an option to stop video from saving into photos and instead just stay in the snappy app
With Family Sharing set up, up to six family members can use this app.