# UltraStop — Precision timing made easy

> Precision timing made easy (iPhone/iPad app by JUHWAN LEE.)

- Source: https://appshunter.io/ios/app/ultrastop/id6740802633 (this page in markdown: same URL + `.md`)
- Developer: [JUHWAN LEE](https://appshunter.io/developer/1703441721)
- Category: Utilities, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 22 MB
- Languages: American English, Hindi, Indonesian, Japanese, Korean, European Portuguese, Russian, Vietnamese
- Released: 2025-01-22
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/ultrastop/id6740802633/reviews.md

## What is UltraStop?

A high-performance stopwatch app designed for tasks requiring ultra-precise time measurement. It measures time down to milliseconds and microseconds with exceptional accuracy, making it perfect for experiments, sports, programming tests, and more. With an intuitive interface, anyone can effortlessly record precise timings.


## Version history (last 2 releases)

### 1.0.1 — 2026-01-18

Bug Fix

### 1.0.0 — 2025-01-23

No release notes.

## Apps similar to UltraStop

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Stopwatch Full Screen](https://appshunter.io/ios/app/stopwatch-full-screen/id6450861684) | — | $1.99 | Utilities |
| [StopWatchhh - Stopwatch](https://appshunter.io/ios/app/stopwatchhh-stopwatch/id6746962611) | — | Free | Utilities |
| [Stopwatch Skull - Timer](https://appshunter.io/ios/app/stopwatch-skull-timer/id6744737324) | — | Free | Utilities |
| [iSimpleStopWatch](https://appshunter.io/ios/app/isimplestopwatch/id6446799571) | — | Free | Utilities |
| [Unix TimeStamp](https://appshunter.io/ios/app/unix-timestamp/id6737517840) | 5.0 (1) | Free | Utilities |
| [StopWatch Quick](https://appshunter.io/ios/app/stopwatch-quick/id6746170205) | 5.0 (3) | Free | Utilities |

## More apps by JUHWAN LEE

- [CRYPTOAI - Crypto AI](https://appshunter.io/ios/app/cryptoai-crypto-ai/id6478912238)
- [Eat Suppressor](https://appshunter.io/ios/app/eat-suppressor/id6503188043)
- [NASDAQAI - Nasdaq AI](https://appshunter.io/ios/app/nasdaqai-nasdaq-ai/id6503345000)
- [Punch Cat](https://appshunter.io/ios/app/punch-cat/id6541759274)
- [ElectronSign](https://appshunter.io/ios/app/electronsign/id6550921536)
- [DogWag](https://appshunter.io/ios/app/dogwag/id6550922739)

All apps by JUHWAN LEE: https://appshunter.io/developer/1703441721

## Related topics

[69seconds](https://appshunter.io/ios/topics/69seconds)

---

*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 2026-05-19.*