# PDDBook ROOSSA vs Tabi

The clearest difference is in-app purchases: PDDBook ROOSSA at none against Tabi's 2. PDDBook ROOSSA also leads on iOS requirement (13.0 vs 15.1). Tabi's advantage is update cadence (every 4 days vs every 34 months). On price, ads and device support there is nothing between them.

Both are free to download. Tabi sells 2 in-app purchases, starting at $9.99 per year. PDDBook ROOSSA asks for nothing beyond the download.

PDDBook ROOSSA ships an update every 34 months, Tabi every 4 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | PDDBook ROOSSA | Tabi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 4 days** |
| Size | 110 MB | 46 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Andrey Polyak](https://appshunter.io/developer/1096736813) | [Omer Sait Aldemir](https://appshunter.io/developer/1891833950) |

## What reviewers say

### PDDBook ROOSSA

[App page](https://appshunter.io/ios/app/pddbook-roossa/id1462274594)

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

**In-app purchases:** none


### Tabi

[App page](https://appshunter.io/ios/app/tabi-play-ideas/id6763588603)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Premium | $9.99 | per year |
| Lifetime Premium | $19.99 | one-time |


## Frequently asked questions

### Is PDDBook ROOSSA free?

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

### Is Tabi free?

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

### Do PDDBook ROOSSA or Tabi have ads?

Neither PDDBook ROOSSA nor Tabi shows ads.

### Which is updated more often, PDDBook ROOSSA or Tabi?

PDDBook ROOSSA ships an update every 34 months, and Tabi every 4 days. Most recently, PDDBook ROOSSA was updated on November 6, 2026 and Tabi on November 5, 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.*