# UltraStop vs Millisecond stopwatch & timer

The clearest difference is ads: UltraStop at none against Millisecond stopwatch & timer's shown. Millisecond stopwatch & timer's advantage is update cadence (every 4 months vs every 12 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UltraStop ships an update every 12 months, Millisecond stopwatch & timer every 4 months. The most recent releases landed on May 19, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | UltraStop | Millisecond stopwatch & timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/millisecond-stopwatch-and-timer/id6744745649/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Every 4 months** |
| Monetization | — | Ad-supported |
| Size | 22 MB | 38 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JUHWAN LEE](https://appshunter.io/developer/1703441721) | [Seulki Eom](https://appshunter.io/developer/1718927408) |

## What reviewers say

### UltraStop

[App page](https://appshunter.io/ios/app/ultrastop/id6740802633)

**Features:** macOS Compatibility

**In-app purchases:** none


### Millisecond stopwatch & timer

[App page](https://appshunter.io/ios/app/millisecond-stopwatch-and-timer/id6744745649)

This utility app offers both a stopwatch and a timer with millisecond precision. It includes smart presets, lap tracking, and customizable alerts. Ideal for precise timing in sports, studies, or experiments.

**Highlights:** Stopwatch and timer functionality, Millisecond visualization, Smart timer presets, Lap/split tracking, Dark mode, Vibration/sound alerts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is UltraStop free?

UltraStop is free to download, with no in-app purchases.

### Is Millisecond stopwatch & timer free?

Millisecond stopwatch & timer is free to download, with no in-app purchases.

### Do UltraStop or Millisecond stopwatch & timer have ads?

Millisecond stopwatch & timer shows ads; UltraStop does not.

### Which is updated more often, UltraStop or Millisecond stopwatch & timer?

UltraStop ships an update every 12 months, and Millisecond stopwatch & timer every 4 months. Most recently, UltraStop was updated on May 19, 2026 and Millisecond stopwatch & timer on September 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*