# Korenga vs BlackBook

The clearest difference is in-app purchases: Korenga at none against BlackBook's 2. Korenga also leads on iOS requirement (12.0 vs 15.0). BlackBook's advantage is update cadence (every 5 days vs every 17 months). On price, ads and device support there is nothing between them.

Both are free to download. BlackBook sells 2 in-app purchases, starting at $4.99 per month. Korenga asks for nothing beyond the download.

Korenga ships an update every 17 months, BlackBook every 5 days. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Korenga | BlackBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 5 days** |
| Size | 40 MB | 16 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Korenga, Inc](https://appshunter.io/developer/1551662397) | [KYLE AUSTIN PRIESS](https://appshunter.io/developer/6784800323) |

## What reviewers say

### Korenga

[App page](https://appshunter.io/ios/app/korenga/id1551662395)

**Features:** macOS Compatibility

**In-app purchases:** none


### BlackBook

[App page](https://appshunter.io/ios/app/blackbook-dating-journal/id6784800321)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BlackBook Pro | $4.99 | per month |
| BlackBook Pro | $39.99 | per year |


## Frequently asked questions

### Is Korenga free?

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

### Is BlackBook free?

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

### Do Korenga or BlackBook have ads?

Neither Korenga nor BlackBook shows ads.

### Which is updated more often, Korenga or BlackBook?

Korenga ships an update every 17 months, and BlackBook every 5 days. Most recently, Korenga was updated on October 7, 2026 and BlackBook on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*