# ComboTimer vs Underwater Stopwatch

The clearest difference is update cadence: Underwater Stopwatch at every 3 days against ComboTimer's every 3 months. ComboTimer's advantage is iOS requirement (8.2 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

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

ComboTimer ships an update every 3 months, Underwater Stopwatch every 3 days. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ComboTimer | Underwater Stopwatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/combotimer/id1063088727/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 84.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 10 MB | 4 MB |
| Requires iOS | **8.2** | 18.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [iroribit Inc.](https://appshunter.io/developer/1063088726) | [Vlad Topala](https://appshunter.io/developer/6783263834) |

## What reviewers say

### ComboTimer

[App page](https://appshunter.io/ios/app/combotimer/id1063088727)

Create custom sequences of timers for various activities, from workouts to work sessions. Arrange timers in a row, set repeats, insert pauses, and choose from multiple sounds. Save and load your timer configurations for easy reuse.

**Highlights:** Sequential timer arrangement, Repeatable timers, Customizable pauses, Multiple sound options, Save and load timer configurations, Pomodoro Technique support

**Features:** macOS Compatibility

**In-app purchases:** none


### Underwater Stopwatch

[App page](https://appshunter.io/ios/app/underwater-stopwatch/id6783263832)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ComboTimer free?

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

### Is Underwater Stopwatch free?

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

### Do ComboTimer or Underwater Stopwatch have ads?

Neither ComboTimer nor Underwater Stopwatch shows ads.

### Which is updated more often, ComboTimer or Underwater Stopwatch?

ComboTimer ships an update every 3 months, and Underwater Stopwatch every 3 days. Most recently, ComboTimer was updated on October 3, 2026 and Underwater Stopwatch on October 8, 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.*