# Fuuuga vs Underwater Stopwatch

The clearest difference is in-app purchases: Underwater Stopwatch at none against Fuuuga's 1. Underwater Stopwatch also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Fuuuga sells 1 one-off in-app purchase. Underwater Stopwatch asks for nothing beyond the download.

Fuuuga ships an update every 2 days, Underwater Stopwatch every 3 days. The most recent releases landed on September 12, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Fuuuga | Underwater Stopwatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 days |
| Size | 98 MB | 4 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tomoki Sasaki](https://appshunter.io/developer/6780824620) | [Vlad Topala](https://appshunter.io/developer/6783263834) |

## What reviewers say

### Fuuuga

[App page](https://appshunter.io/ios/app/fuuuga-multi-interval-timer/id6780824618)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fuuuga+ | $4.99 | one-time |


### 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 Fuuuga free?

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

### Is Underwater Stopwatch free?

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

### Do Fuuuga or Underwater Stopwatch have ads?

Fuuuga shows ads; Underwater Stopwatch does not.

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

Fuuuga ships an update every 2 days, and Underwater Stopwatch every 3 days. Most recently, Fuuuga was updated on September 12, 2026 and Underwater Stopwatch on September 22, 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.*