# Marcus vs KRIZ

The clearest difference is in-app purchases: KRIZ at none against Marcus's 2. KRIZ also leads on update cadence (fortnightly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Marcus sells 2 in-app purchases, starting at $6.99 per month. KRIZ asks for nothing beyond the download.

Marcus ships an update every 2 months, KRIZ fortnightly. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Marcus | KRIZ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 65 MB | 46 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vukasin Rancic](https://appshunter.io/developer/1886442082) | [Kateryna Dimitrashko](https://appshunter.io/developer/6797778450) |

## What reviewers say

### Marcus

[App page](https://appshunter.io/ios/app/marcus-book-and-reading-tracker/id6792703147)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marcus Pro Monthly | $6.99 | per month |
| Marcus Pro Annual | $49.99 | per year |


### KRIZ

[App page](https://appshunter.io/ios/app/kriz-reading-diary/id6797778448)

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

**In-app purchases:** none


## Frequently asked questions

### Is Marcus free?

Marcus is free to download, with in-app purchases available.

### Is KRIZ free?

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

### Do Marcus or KRIZ have ads?

Neither Marcus nor KRIZ shows ads.

### Which is updated more often, Marcus or KRIZ?

Marcus ships an update every 2 months, and KRIZ fortnightly. Most recently, Marcus was updated on October 9, 2026 and KRIZ on October 4, 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.*