# Blybahn vs U.S.R. “Triton”

The clearest difference is in-app purchases: U.S.R. “Triton” at none against Blybahn's 6. Blybahn's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Blybahn sells 6 one-off in-app purchases. U.S.R. “Triton” asks for nothing beyond the download.

Blybahn ships an update every 2 weeks, U.S.R. “Triton” every 2 months. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Blybahn | U.S.R. “Triton” |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Size | 77 MB | 50 MB |
| Requires iOS | 15.3 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Zooma B.V.](https://appshunter.io/developer/418861795) | [Zooma B.V.](https://appshunter.io/developer/418861795) |

## What reviewers say

### Blybahn

[App page](https://appshunter.io/ios/app/blybahn/id6745085451)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10 diamonds | $1.00 | one-time |
| 50 diamonds | $3.99 | one-time |
| 100 diamonds | $8.99 | one-time |
| 250 diamonds | $22.99 | one-time |
| 500 diamonds | $44.99 | one-time |
| 1000 diamonds | $89.99 | one-time |


### U.S.R. “Triton”

[App page](https://appshunter.io/ios/app/usr-triton/id6762352069)

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

**In-app purchases:** none


## Frequently asked questions

### Is Blybahn free?

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

### Is U.S.R. “Triton” free?

U.S.R. “Triton” is free to download, with no in-app purchases.

### Do Blybahn or U.S.R. “Triton” have ads?

Neither Blybahn nor U.S.R. “Triton” shows ads.

### Which is updated more often, Blybahn or U.S.R. “Triton”?

Blybahn ships an update every 2 weeks, and U.S.R. “Triton” every 2 months. Most recently, Blybahn was updated on October 18, 2026 and U.S.R. “Triton” on October 12, 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.*