# Modulo 6 vs ZamTek

The clearest difference is iOS requirement: ZamTek at 13.0 against Modulo 6's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Modulo 6 ships an update every 4 months, ZamTek every 6 months. The most recent releases landed on September 17, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Modulo 6 | ZamTek |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Size | 69 MB | 77 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fr. Sauter AG](https://appshunter.io/developer/586916485) | [Octys LLC](https://appshunter.io/developer/634902439) |

## What reviewers say

### Modulo 6

[App page](https://appshunter.io/ios/app/modulo-6/id1454404673)

**In-app purchases:** none


### ZamTek

[App page](https://appshunter.io/ios/app/zamtek/id6444892935)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Modulo 6 free?

Modulo 6 is free to download, with no in-app purchases.

### Is ZamTek free?

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

### Do Modulo 6 or ZamTek have ads?

Neither Modulo 6 nor ZamTek shows ads.

### Which is updated more often, Modulo 6 or ZamTek?

Modulo 6 ships an update every 4 months, and ZamTek every 6 months. Most recently, Modulo 6 was updated on September 17, 2026 and ZamTek on September 30, 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.*