# Gene Cafe vs Roast Book

The clearest difference is in-app purchases: Gene Cafe at none against Roast Book's 1. Gene Cafe also leads on iOS requirement (13.0 vs 15.0). Roast Book's advantage is update cadence (every 5 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Roast Book sells 1 one-off in-app purchase. Gene Cafe asks for nothing beyond the download.

Gene Cafe ships an update every 2 months, Roast Book every 5 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Gene Cafe | Roast Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Size | 89 MB | 46 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [GENE CAFE](https://appshunter.io/developer/1794057324) | [kazuki korenori](https://appshunter.io/developer/1884835388) |

## What reviewers say

### Gene Cafe

[App page](https://appshunter.io/ios/app/gene-cafe/id6741412098)

**Features:** macOS Compatibility

**In-app purchases:** none


### Roast Book

[App page](https://appshunter.io/ios/app/roast-book/id6763713928)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Roast Book Pro | $5.99 | one-time |


## Frequently asked questions

### Is Gene Cafe free?

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

### Is Roast Book free?

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

### Do Gene Cafe or Roast Book have ads?

Neither Gene Cafe nor Roast Book shows ads.

### Which is updated more often, Gene Cafe or Roast Book?

Gene Cafe ships an update every 2 months, and Roast Book every 5 days. Most recently, Gene Cafe was updated on October 30, 2026 and Roast Book on October 31, 2026.

---

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