# Heavy Mental vs schlüssfach.ch

Heavy Mental and schlüssfach.ch 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.

Heavy Mental ships an update every 3 weeks, schlüssfach.ch every 6 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Heavy Mental | schlüssfach.ch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Size | 151 MB | 36 MB |
| Requires iOS | **14.3** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zurcher Hochschule der Kunste](https://appshunter.io/developer/995969052) | [schlüssfach.ch GmbH](https://appshunter.io/developer/1817192819) |

## What reviewers say

### Heavy Mental

[App page](https://appshunter.io/ios/app/heavy-mental/id1664797235)

**Features:** macOS Compatibility

**In-app purchases:** none


### schlüssfach.ch

[App page](https://appshunter.io/ios/app/schlussfachch/id6746498110)

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

**In-app purchases:** none


## Frequently asked questions

### Is Heavy Mental free?

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

### Is schlüssfach.ch free?

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

### Do Heavy Mental or schlüssfach.ch have ads?

Neither Heavy Mental nor schlüssfach.ch shows ads.

### Which is updated more often, Heavy Mental or schlüssfach.ch?

Heavy Mental ships an update every 3 weeks, and schlüssfach.ch every 6 weeks. Most recently, Heavy Mental was updated on October 30, 2026 and schlüssfach.ch on October 25, 2026.

---

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