# Reaction: Press and Hold — Beyond your limits

> Beyond your limits (iPhone/iPad app by One Choi.)

- Source: https://appshunter.io/ios/app/reaction-press-and-hold/id6800738573 (this page in markdown: same URL + `.md`)
- Developer: [One Choi](https://appshunter.io/developer/1874544855)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-08-20
- Data updated: 2026-10-09

## What is Reaction?

Reaction measures the moment you LIFT your finger, not when you tap. By removing the travel time of moving your finger to the screen, it gets closer to your pure reaction time.

Features
- Hold, then release the instant the signal appears. Release-time measurement
- Frame-accurate timing to minimize display latency
- Anticipation guard. Releases faster than humanly possible are rejected
- Per-session average, best, and consistency (standard deviation)
- Trend chart and your personal reaction-time distribution
- Export your results to CSV
- Everything stays on device. No data collection, tracking, or ads
- Works on iPhone, iPad, and Mac

A note on accuracy
Any software-based tester has a small, unavoidable delay (typically under one frame) from the display pipeline. Treat results as a consistent way to track your own trend over time, not as a lab-grade absolute measurement.

## Is Reaction safe?

Not enough ratings yet to assess Reaction.

## Is Reaction legit?

Reaction: Press and Hold appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Reaction is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-08-26

No release notes.

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## More apps by One Choi

- [Constellation88](https://appshunter.io/ios/app/constellation88/id6758706710)
- [Flags: Around the Globe](https://appshunter.io/ios/app/flags-around-the-globe/id6800990970)

All apps by One Choi: https://appshunter.io/developer/1874544855

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*