# Cornerman for K.O. II vs RS

The clearest difference is rating: RS at 5.0 against Cornerman for K.O. II's 2.5. RS also leads on update cadence (every 4 days vs every 3 months) and monetization model (free vs free with in-app purchases). Cornerman for K.O. II's advantage is ratings volume (11 vs 3) and iOS requirement (14.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Cornerman for K.O. II sells 1 one-off in-app purchase and RS sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

RS holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 11 and 3 respectively.

Cornerman for K.O. II ships an update every 3 months, RS every 4 days. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Cornerman for K.O. II | RS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (11 ratings)](https://appshunter.io/ios/app/cornerman-for-ko-ii/id6499280264/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rs-choir/id6760674816/reviews)** |
| Number of ratings | **11** | 3 |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 45 MB | 7 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Delta Seven Kft.](https://appshunter.io/developer/1355331300) | [Rolf Schmucker](https://appshunter.io/developer/1493266803) |

## What reviewers say

### Cornerman for K.O. II

[App page](https://appshunter.io/ios/app/cornerman-for-ko-ii/id6499280264)

This app serves as a sample librarian for the Teenage Engineering EP-133 K.O. II sampler. It allows users to upload, download, and organize backups directly from their device. Note that it requires a USB-C connection and is only compatible with iOS devices featuring such ports.

**Highlights:** Sample librarian for EP-133 K.O. II, Upload and download backups, Organize and share backups, USB-C connection required, iOS device compatibility

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Restore/Backup Functionality | $14.99 | one-time |


### RS

[App page](https://appshunter.io/ios/app/rs-choir/id6760674816)

Compose, sequence, loop, and harmonize with a virtual vocal ensemble. This app offers four distinct modes for creating complex vocal arrangements, including real-time harmonization with your microphone and AI-powered song generation.

**Highlights:** Real-time vocal harmonization, Multi-octave virtual keyboard, Four recording loops for layered harmonies, Manual note editor for pitch and length, 16-pattern song sequencing, AI song generation, Native gear synchronization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Creator Version | $4.99 | one-time |
| Creator Version | $8.99 | one-time |
| Creator Version | $14.99 | one-time |


## Frequently asked questions

### Is Cornerman for K.O. II free?

Cornerman for K.O. II is free to download, with in-app purchases available.

### Is RS free?

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

### Which has better reviews, Cornerman for K.O. II or RS?

RS is rated higher. Cornerman for K.O. II averages 2.5 out of 5 from 11 ratings, while RS averages 5.0 from 3 ratings.

### Do Cornerman for K.O. II or RS have ads?

Neither Cornerman for K.O. II nor RS shows ads.

### Which is updated more often, Cornerman for K.O. II or RS?

Cornerman for K.O. II ships an update every 3 months, and RS every 4 days. Most recently, Cornerman for K.O. II was updated on November 4, 2026 and RS on October 31, 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.*