# 40 Day Challenge vs Rohschliff Studio

The clearest difference is update cadence: 40 Day Challenge at every 6 weeks against Rohschliff Studio's every 7 months. 40 Day Challenge also leads on iOS requirement (13.4 vs 15.1). 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.

40 Day Challenge ships an update every 6 weeks, Rohschliff Studio every 7 months. The most recent releases landed on October 6, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 40 Day Challenge | Rohschliff Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/40-day-challenge/id1351860748/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Monetization | Free | — |
| Size | 25 MB | 51 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [FITFIRM GmbH](https://appshunter.io/developer/1351860747) | [BSPORT](https://appshunter.io/developer/1356621553) |

## What reviewers say

### 40 Day Challenge

[App page](https://appshunter.io/ios/app/40-day-challenge/id1351860748)

This app helps users achieve personal goals through motivational techniques, audios, and videos. It incorporates features from positive psychology and mindfulness to improve life quality and offers daily goal tracking with configurable reminders.

**Highlights:** Collect points to track progress, Positive psychology techniques, Mindfulness audio tutorials, Video introductions to personal development areas, Daily goal tracking and reflection, Configurable reminders

**Features:** macOS Compatibility

**In-app purchases:** none


### Rohschliff Studio

[App page](https://appshunter.io/ios/app/rohschliff-studio/id6742844105)

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

**In-app purchases:** none


## Frequently asked questions

### Is 40 Day Challenge free?

40 Day Challenge is free to download, with no in-app purchases.

### Is Rohschliff Studio free?

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

### Do 40 Day Challenge or Rohschliff Studio have ads?

Neither 40 Day Challenge nor Rohschliff Studio shows ads.

### Which is updated more often, 40 Day Challenge or Rohschliff Studio?

40 Day Challenge ships an update every 6 weeks, and Rohschliff Studio every 7 months. Most recently, 40 Day Challenge was updated on October 6, 2026 and Rohschliff Studio on October 25, 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.*