# CarBoss vs Trombone Level

The clearest difference is ads: CarBoss at none against Trombone Level's shown. CarBoss also leads on iOS requirement (8.0 vs 15.0). Trombone Level's advantage is update cadence (every 2 weeks vs every 4 months). On price, 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.

CarBoss ships an update every 4 months, Trombone Level every 2 weeks. The most recent releases landed on October 26, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CarBoss | Trombone Level |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 7 MB | 40 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [凤军 程](https://appshunter.io/developer/873913814) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### CarBoss

[App page](https://appshunter.io/ios/app/carboss-2/id1472320751)

**Features:** macOS Compatibility

**In-app purchases:** none


### Trombone Level

[App page](https://appshunter.io/ios/app/trombone-level/id6748576970)

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

**In-app purchases:** none


## Frequently asked questions

### Is CarBoss free?

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

### Is Trombone Level free?

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

### Do CarBoss or Trombone Level have ads?

Trombone Level shows ads; CarBoss does not.

### Which is updated more often, CarBoss or Trombone Level?

CarBoss ships an update every 4 months, and Trombone Level every 2 weeks. Most recently, CarBoss was updated on October 26, 2026 and Trombone Level on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*