# PDDBook ROOSSA vs EdRes

The clearest difference is update cadence: EdRes at every 4 months against PDDBook ROOSSA's every 34 months. PDDBook ROOSSA's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PDDBook ROOSSA ships an update every 34 months, EdRes every 4 months. Both last shipped on October 1, 2026.

## The numbers

| Metric | PDDBook ROOSSA | EdRes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/edres/id6557075013/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 110 MB | 22 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Andrey Polyak](https://appshunter.io/developer/1096736813) | [Knowledger Lab LLC](https://appshunter.io/developer/1758322483) |

## 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


### EdRes

[App page](https://appshunter.io/ios/app/edres/id6557075013)

Engage in exciting courses and solve challenging tasks to earn digital tokens. Participate in interactive quizzes to grow your token balance and knowledge. Become an expert in your chosen field with this personal universe of learning and opportunity.

**Highlights:** Interactive courses, Problem-solving tasks, Earn digital tokens, Interactive quiz game, Knowledge level progression

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PDDBook ROOSSA free?

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

### Is EdRes free?

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

### Do PDDBook ROOSSA or EdRes have ads?

Neither PDDBook ROOSSA nor EdRes shows ads.

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

PDDBook ROOSSA ships an update every 34 months, and EdRes every 4 months. Most recently, PDDBook ROOSSA was updated on October 1, 2026 and EdRes on October 1, 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.*