# PiPomo vs Underwater Stopwatch

The clearest difference is in-app purchases: Underwater Stopwatch at none against PiPomo's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. PiPomo sells 3 in-app purchases, starting at $0.99 per month. Underwater Stopwatch asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on September 11, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | PiPomo | Underwater Stopwatch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Size | 12 MB | 4 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Vinh Vo](https://appshunter.io/developer/961065270) | [Vlad Topala](https://appshunter.io/developer/6783263834) |

## What reviewers say

### PiPomo

[App page](https://appshunter.io/ios/app/pipomo-floating-timer-script/id6778261932)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Annual | $1.99 | per year |
| PiPrompt Lifetime | $2.99 | 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 PiPomo free?

PiPomo 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 PiPomo or Underwater Stopwatch have ads?

Neither PiPomo nor Underwater Stopwatch shows ads.

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

PiPomo ships an update every 3 days, and Underwater Stopwatch every 3 days. Most recently, PiPomo was updated on September 11, 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.*