# Radar Rush vs UBOOTSIM

The clearest difference is ads: UBOOTSIM at none against Radar Rush's shown. Radar Rush's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, 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.

Radar Rush ships an update every 5 days, UBOOTSIM every 4 days. The most recent releases landed on October 9, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Radar Rush | UBOOTSIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ubootsim/id6818294804/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | — | Free |
| Size | 69 MB | 12 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 12+ |
| Developer | [Payal Sharma](https://appshunter.io/developer/1895409861) | [Pablo Kessler Saiz](https://appshunter.io/developer/1818393128) |

## What reviewers say

### Radar Rush

[App page](https://appshunter.io/ios/app/radar-rush-atc-simulator/id6770172677)

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

**In-app purchases:** none


### UBOOTSIM

[App page](https://appshunter.io/ios/app/ubootsim/id6818294804)

Command a World War II submarine in the Strait of Gibraltar. Hunt, strike, and survive enemy convoys and escorts using realistic periscopes, torpedo computers, and deck guns. Experience the sounds and sensations of underwater combat.

**Highlights:** Realistic periscope and binoculars with zoom, Hydrophone for detecting enemy propellers, Tactical chart for navigation and target tracking, Torpedo Data Computer (TDC) for accurate firing solutions, Deck gun for surface combat, Stealth mechanics to evade escorts, Immersive sound design and U-boat sensations

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Radar Rush free?

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

### Is UBOOTSIM free?

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

### Do Radar Rush or UBOOTSIM have ads?

Radar Rush shows ads; UBOOTSIM does not.

### Which is updated more often, Radar Rush or UBOOTSIM?

Radar Rush ships an update every 5 days, and UBOOTSIM every 4 days. Most recently, Radar Rush was updated on October 9, 2026 and UBOOTSIM on October 26, 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.*