# Martinus vs Ein Guter Tag

The clearest difference is update cadence: Ein Guter Tag at monthly against Martinus's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Martinus ships an update every 2 months, Ein Guter Tag monthly. The most recent releases landed on October 29, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Martinus | Ein Guter Tag |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 16.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | — | Free |
| Size | 21 MB | 57 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Agentur Zeitpunkt GmbH](https://appshunter.io/developer/439877817) | [Andreas Juen](https://appshunter.io/developer/1329524862) |

## What reviewers say

### Martinus

[App page](https://appshunter.io/ios/app/martinus/id1382756262)

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

**In-app purchases:** none


### Ein Guter Tag

[App page](https://appshunter.io/ios/app/ein-guter-tag/id1438941690)

This app helps you live a more climate-friendly lifestyle and become politically active. Earn points by completing challenges to reduce your environmental footprint and connect with others for support and tips.

**Highlights:** Calculate carbon footprint, Complete climate challenges, Join groups for tips and support, Challenge friends and family, Engage in political action for climate protection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Martinus free?

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

### Is Ein Guter Tag free?

Ein Guter Tag is free to download, with no in-app purchases.

### Do Martinus or Ein Guter Tag have ads?

Neither Martinus nor Ein Guter Tag shows ads.

### Which is updated more often, Martinus or Ein Guter Tag?

Martinus ships an update every 2 months, and Ein Guter Tag monthly. Most recently, Martinus was updated on October 29, 2026 and Ein Guter Tag on October 22, 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.*