# WatchRetro vs Underkeep

The clearest difference is price: Underkeep at Free against WatchRetro's $0.99. WatchRetro's advantage is update cadence (every 5 days vs every 3 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Underkeep is free to download; WatchRetro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

WatchRetro ships an update every 5 days, Underkeep every 3 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | WatchRetro | Underkeep |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 11 MB | 25 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Hemal Modi](https://appshunter.io/developer/1522352514) | [Daniel Beer](https://appshunter.io/developer/6808949555) |

## What reviewers say

### WatchRetro

[App page](https://appshunter.io/ios/app/watchretro-watch-games-arcade/id6781498222)

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

**In-app purchases:** none


### Underkeep

[App page](https://appshunter.io/ios/app/underkeep/id6814523440)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is WatchRetro free?

WatchRetro costs $0.99, with no in-app purchases.

### Is Underkeep free?

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

### Do WatchRetro or Underkeep have ads?

Neither WatchRetro nor Underkeep shows ads.

### Which is updated more often, WatchRetro or Underkeep?

WatchRetro ships an update every 5 days, and Underkeep every 3 weeks. Most recently, WatchRetro was updated on October 31, 2026 and Underkeep on November 6, 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.*