# Sonolus vs Rusty's Pro Tromboner

The clearest difference is rating: Sonolus at 3.8 against Rusty's Pro Tromboner's 2.0. Sonolus also leads on ratings volume (1K vs 4) and chart position (#38 vs unranked). Rusty's Pro Tromboner's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Sonolus sells 4 one-off in-app purchases. Rusty's Pro Tromboner asks for nothing beyond the download.

Sonolus holds the better App Store score, 3.8 against 2.0. That said, the two scores are not equally well evidenced: Sonolus has 1K ratings behind it against 4, so its average is the more settled of the two.

Sonolus ships an update every 2 months, Rusty's Pro Tromboner every 6 days. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sonolus | Rusty's Pro Tromboner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (1K ratings)](https://appshunter.io/ios/app/sonolus/id1637055220/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/rustys-pro-tromboner/id6466125813/reviews) |
| Number of ratings | **1K** | 4 |
| Positive reviews | 51.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#38** | — |
| Size | 151 MB | 142 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [MACAU FOSFENES TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1516590315) | [MB Technologies LLC](https://appshunter.io/developer/1264481511) |

## What reviewers say

### Sonolus

[App page](https://appshunter.io/ios/app/sonolus/id1637055220)

**Currently charting:** #38 Top Free · Music, #147 Top Grossing · Music (US App Store)

Dive into a vibrant rhythm game community. Play solo, with friends, or compete against others. Create and share your own custom levels and replays.

**Highlights:** Rhythm game exploration, Multiplayer gameplay, Level creation, Replay sharing, Community connection

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gem x500 | $4.99 | one-time |
| Gem x1000 | $9.99 | one-time |
| Gem x2200 | $19.99 | one-time |
| Gem x6000 | $49.99 | one-time |

**What reviewers like**

- 🚀 Amazing app
- 👍 Great rhythm game
- 👍 Lots of custom content
- 👍 Fantastic experience
- 👍 Awesome game

**What reviewers complain about**

- 🐛 Banned from server
- 🐛 Failed connections
- 🐛 Odd controls
- 🔒 Homophobic creators
- 🐛 Server issues

**Reported bugs**

- Chart preview keeps playing on loop
- Ads

**Requested features**

- More Project Sekai charts
- Kpop server


### Rusty's Pro Tromboner

[App page](https://appshunter.io/ios/app/rustys-pro-tromboner/id6466125813)

This rhythm game lets you play any song in a specific format, master complex rhythms, and enjoy engaging visuals. It offers multiple difficulty modes and integrates with external devices for a unique interactive experience.

**Highlights:** Import any song in Trombone Champ format, Master intricate rhythms, Engaging visual effects, Integrates with Motorbunny, Easy or Hard mode, Community score sharing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sonolus free?

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

### Is Rusty's Pro Tromboner free?

Rusty's Pro Tromboner is free to download, with no in-app purchases.

### Which has better reviews, Sonolus or Rusty's Pro Tromboner?

Sonolus is rated higher. Sonolus averages 3.8 out of 5 from 1K ratings, while Rusty's Pro Tromboner averages 2.0 from 4 ratings.

### Do Sonolus or Rusty's Pro Tromboner have ads?

Sonolus shows ads; Rusty's Pro Tromboner does not.

### Which is updated more often, Sonolus or Rusty's Pro Tromboner?

Sonolus ships an update every 2 months, and Rusty's Pro Tromboner every 6 days. Most recently, Sonolus was updated on October 19, 2026 and Rusty's Pro Tromboner on October 6, 2026.

---

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