# The mark experiment vs VerseLoop

The clearest difference is update cadence: VerseLoop at monthly against The mark experiment's every 31 months. The mark experiment's advantage is iOS requirement (9.2 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.

The mark experiment ships an update every 31 months, VerseLoop monthly. Both last shipped on September 8, 2026.

## The numbers

| Metric | The mark experiment | VerseLoop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Monthly** |
| Size | 14 MB | 69 MB |
| Requires iOS | **9.2** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jonas Kellert](https://appshunter.io/developer/1187446918) | [Michael Seel](https://appshunter.io/developer/1855510435) |

## What reviewers say

### The mark experiment

[App page](https://appshunter.io/ios/app/the-mark-experiment/id1187446919)

**Features:** macOS Compatibility

**In-app purchases:** none


### VerseLoop

[App page](https://appshunter.io/ios/app/verseloop/id6755681666)

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

**In-app purchases:** none


## Frequently asked questions

### Is The mark experiment free?

The mark experiment is free to download, with no in-app purchases.

### Is VerseLoop free?

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

### Do The mark experiment or VerseLoop have ads?

Neither The mark experiment nor VerseLoop shows ads.

### Which is updated more often, The mark experiment or VerseLoop?

The mark experiment ships an update every 31 months, and VerseLoop monthly. Most recently, The mark experiment was updated on September 8, 2026 and VerseLoop on September 8, 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.*