# Ruffio vs Kudu FM

Ruffio and Kudu FM are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ruffio ships an update every 10 days, Kudu FM every 2 weeks. The most recent releases landed on November 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Ruffio | Kudu FM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (443 ratings)](https://appshunter.io/ios/app/ruffio-backing-track-creator/id1544449867/reviews)** | — |
| Number of ratings | **443** | — |
| Positive reviews | 65.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 weeks |
| Monetization | Paid | — |
| Size | 59 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Rufus Mall](https://appshunter.io/developer/887043621) | [Jams Digital](https://appshunter.io/developer/1869961128) |

## What reviewers say

### Ruffio

[App page](https://appshunter.io/ios/app/ruffio-backing-track-creator/id1544449867)

This app uses advanced AI to split any song into its individual instrument stems, allowing you to mute or isolate vocals, drums, bass, and more. Create custom backing tracks, karaoke versions, or practice your instrument with isolated parts. All processing happens on your device for privacy and offline use.

**Highlights:** AI stem separation, Mute vocals for karaoke, Isolate instruments for practice, Real-time mixing controls, Offline audio processing, Supports various audio/video formats

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

**In-app purchases:** none

**What reviewers like**

- 🎵 Excellent audio stem separation quality
- 💰 Completely free with no ads
- 👍 User-friendly and easy to use
- 🚀 Fast and efficient processing
- ⭐ Works better than paid competitors

**What reviewers complain about**

- 🐛 YouTube import feature frequently broken
- 📱 iPad compatibility issues and crashes
- 🔊 Audio quality sometimes muddy or unclear
- 🎚️ Slider controls can be imprecise
- ❌ Missing export/save functionality

**Reported bugs**

- YouTube import not working (multiple reports)
- App crashes on iPad
- Audio phasing in and out during playback
- Sliders not responding to input
- Staticky sound quality

**Requested features**

- Export stems as individual audio files
- Pitch change and tempo adjustment
- Ability to play songs backwards
- Better slider controls and responsiveness
- Playlist management system


### Kudu FM

[App page](https://appshunter.io/ios/app/kudu-fm/id6760598865)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ruffio free?

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

### Is Kudu FM free?

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

### Do Ruffio or Kudu FM have ads?

Neither Ruffio nor Kudu FM shows ads.

### Which is updated more often, Ruffio or Kudu FM?

Ruffio ships an update every 10 days, and Kudu FM every 2 weeks. Most recently, Ruffio was updated on November 3, 2026 and Kudu FM on October 8, 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.*