# Underwater Runner vs Doomsday Runner

The clearest difference is in-app purchases: Underwater Runner at none against Doomsday Runner's 8. Underwater Runner also leads on iOS requirement (13.0 vs 15.0). Doomsday Runner's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Doomsday Runner sells 8 one-off in-app purchases. Underwater Runner asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Underwater Runner | Doomsday Runner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | Every 4 days |
| Size | 182 MB | 529 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ankit Kanani](https://appshunter.io/developer/1800427460) | [Hoi Hei Chow](https://appshunter.io/developer/1842295955) |

## What reviewers say

### Underwater Runner

[App page](https://appshunter.io/ios/app/underwater-runner/id6742896513)

**Features:** macOS Compatibility

**In-app purchases:** none


### Doomsday Runner

[App page](https://appshunter.io/ios/app/doomsday-runner/id6760188149)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 gems | $0.99 | one-time |
| 500 coins | $0.99 | one-time |
| 12 gems | $1.99 | one-time |
| 1200 coins | $1.99 | one-time |
| 80 gems | $9.99 | one-time |
| 8000 coins | $9.99 | one-time |
| 180 gems | $19.99 | one-time |
| 18000 coins | $19.99 | one-time |


## Frequently asked questions

### Is Underwater Runner free?

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

### Is Doomsday Runner free?

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

### Do Underwater Runner or Doomsday Runner have ads?

Underwater Runner shows ads; Doomsday Runner does not.

### Which is updated more often, Underwater Runner or Doomsday Runner?

Underwater Runner ships an update every 4 days, and Doomsday Runner every 4 days. Most recently, Underwater Runner was updated on October 25, 2026 and Doomsday Runner on October 17, 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.*