# Fessies Abfall Memo vs klang²

The clearest difference is in-app purchases: Fessies Abfall Memo at none against klang²'s 10. Fessies Abfall Memo also leads on iOS requirement (9.0 vs 15.6). klang²'s advantage is update cadence (every 2 months vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. klang² sells 10 one-off in-app purchases. Fessies Abfall Memo asks for nothing beyond the download.

Fessies Abfall Memo ships an update every 6 months, klang² every 2 months. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Fessies Abfall Memo | klang² |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 30 MB | 89 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FES Frankfurter Entsorgungs- und Service GmbH](https://appshunter.io/developer/1121417125) | [Oberlin & Rennertz GmbH](https://appshunter.io/developer/1474108830) |

## What reviewers say

### Fessies Abfall Memo

[App page](https://appshunter.io/ios/app/fessies-abfall-memo/id1176039956)

This game makes learning waste separation fun for young children and adults. It features two memory game modes where players match waste items and sort them into the correct bins to earn points. Challenge yourself and your family with timed rounds and aim for a high score.

**Highlights:** Waste separation practice, Memory matching game, Two game modes (Classic & Diagonal), Timed challenges, High score tracking, Suitable for all ages

**Features:** macOS Compatibility

**In-app purchases:** none


### klang²

[App page](https://appshunter.io/ios/app/klang/id1491987376)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Klang2 Pro Option 0 | Free | one-time |
| Klang2 Pro Option 1 | $0.99 | one-time |
| Bundesländer und Hauptstädte | $0.99 | one-time |
| Klang2 Pro Option 2 | $1.99 | one-time |
| Klang2 Pro Option 3 | $3.99 | one-time |
| Volkslieder Premium | $3.99 | one-time |
| Tierisch Menschlich | $3.99 | one-time |
| Klang2 Pro Option 4 | $7.99 | one-time |
| Klang2 Pro Option 5 | $11.99 | one-time |
| Klang2 Pro Option 6 | $16.99 | one-time |


## Frequently asked questions

### Is Fessies Abfall Memo free?

Fessies Abfall Memo is free to download, with no in-app purchases.

### Is klang² free?

klang² is free to download, with in-app purchases available.

### Do Fessies Abfall Memo or klang² have ads?

Neither Fessies Abfall Memo nor klang² shows ads.

### Which is updated more often, Fessies Abfall Memo or klang²?

Fessies Abfall Memo ships an update every 6 months, and klang² every 2 months. Most recently, Fessies Abfall Memo was updated on October 16, 2026 and klang² on October 18, 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.*