# iStopwatch vs UltraStop

The clearest difference is in-app purchases: UltraStop at none against iStopwatch's 1. UltraStop also leads on ads (none vs shown) and device support (3 vs 1). iStopwatch's advantage is update cadence (monthly vs every 12 months). On price and iOS requirement there is nothing between them.

Both are free to download. iStopwatch sells 1 one-off in-app purchase. UltraStop asks for nothing beyond the download.

iStopwatch ships an update monthly, UltraStop every 12 months. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | iStopwatch | UltraStop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 12 months |
| Size | 9 MB | 22 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [景珂 陈](https://appshunter.io/developer/620312170) | [JUHWAN LEE](https://appshunter.io/developer/1703441721) |

## What reviewers say

### iStopwatch

[App page](https://appshunter.io/ios/app/istopwatch-lcd-timer/id1143929948)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $1.99 | one-time |


### UltraStop

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iStopwatch free?

iStopwatch is free to download, with in-app purchases available.

### Is UltraStop free?

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

### Do iStopwatch or UltraStop have ads?

iStopwatch shows ads; UltraStop does not.

### Which is updated more often, iStopwatch or UltraStop?

iStopwatch ships an update monthly, and UltraStop every 12 months. Most recently, iStopwatch was updated on October 1, 2026 and UltraStop on October 7, 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.*