Wait for the flash. Tap fast. See exactly how quick you are — to the millisecond.
ReflexTap flashes the screen green at a random moment; you tap as fast as you can. It measures the gap between the cue and your tap to the millisecond and scores the round. Tap before the flash and it is a false start — no cheating the clock. A handful of rounds gives you a median, your best, your 90th-percentile consistency, and a grade from Slow to Elite.
Quick Test (five rounds), Endurance (twenty rounds back to back, where staying fast is the whole point), and Anticipation — no countdown, no instructions, just watch the dial and tap the instant it flips.
Zero data leaves your device. No account, no cloud, no analytics, no third-party SDKs. Timing uses a high-resolution monotonic clock on your device, and there is no network traffic of any kind.