Preview
As seen through the Display Open live preview ↗A live render at the true 600×600 Display size. On the glasses the dark areas are fully transparent — only the bright UI floats over the real world. If it stays blank the app blocks embedding; use the link above.
About
A peripheral-vision reaction trainer made for a screen on your face. Keep your eyes fixed on the small centre dot; after a random delay a bright cue blazes at one of eight screen edges/corners — you tap Enter the instant you catch it in your peripheral vision, WITHOUT looking straight at it. It times your reaction in milliseconds, calls a false start if you jump before the flash, and tracks your best and rolling average. Pure D-pad: Enter start / react / next, → new round, ↓ reset the session. 100% offline; best time persists. A fun way to sharpen the exact awareness a heads-up display is for.
Features
- Random-delay edge cue at 8 positions
- Millisecond reaction timing + false-start detection
- Best & rolling-average, session rounds
- Enter react · → new round · ↓ reset — pure D-pad
- 100% offline — best time saved
Good to know
- Can’t enforce where you actually look (honour system)
- Reaction time includes display + input latency
- Single mode (no difficulty curve yet)
Data safety
No third-party sharing. Herald doesn't sell or share your data, and there are no ads or trackers.
Minimal collection. Only what a linked service needs — provider tokens are encrypted on Herald's server and never stored on the glasses.
Encrypted in transit. All traffic is HTTPS.
You're in control. Disconnect any linked service at any time from the companion.
Ratings & reviews