# Kravion | Books into behavior vs Star Document Reader

The clearest difference is in-app purchases: Star Document Reader at none against Kravion | Books into behavior's 2. Star Document Reader also leads on update cadence (daily vs fortnightly) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Kravion | Books into behavior sells 2 in-app purchases, starting at $3.99 per month. Star Document Reader asks for nothing beyond the download.

Kravion | Books into behavior ships an update fortnightly, Star Document Reader daily. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Kravion | Books into behavior | Star Document Reader |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Size | 55 MB | 41 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Radic](https://appshunter.io/developer/1896336384) | [Markus Stadi](https://appshunter.io/developer/1888545692) |

## What reviewers say

### Kravion | Books into behavior

[App page](https://appshunter.io/ios/app/kravion-books-into-behavior/id6766910354)

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kravion Premium | $3.99 | per month |
| Kravion Premium | $34.99 | per year |


### Star Document Reader

[App page](https://appshunter.io/ios/app/star-document-reader/id6768236698)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kravion | Books into behavior free?

Kravion | Books into behavior is free to download, with in-app purchases available.

### Is Star Document Reader free?

Star Document Reader is free to download, with no in-app purchases.

### Do Kravion | Books into behavior or Star Document Reader have ads?

Neither Kravion | Books into behavior nor Star Document Reader shows ads.

### Which is updated more often, Kravion | Books into behavior or Star Document Reader?

Kravion | Books into behavior ships an update fortnightly, and Star Document Reader daily. Most recently, Kravion | Books into behavior was updated on October 7, 2026 and Star Document Reader on October 15, 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.*