# F2S vs Eidos

The clearest difference is ads: Eidos at none against F2S's shown. Eidos also leads on update cadence (every 2 days vs every 3 weeks) and iOS requirement (15.1 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. F2S sells 2 in-app purchases, starting at $5.99 per month and Eidos sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

F2S ships an update every 3 weeks, Eidos every 2 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | F2S | Eidos |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Size | 57 MB | 33 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Destan Gokalp](https://appshunter.io/developer/1820630107) | [BERKE KAHRAMAN](https://appshunter.io/developer/1843240615) |

## What reviewers say

### F2S

[App page](https://appshunter.io/ios/app/f2s-feynman-2-scroll/id6758620924)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Yearly | $34.99 | per year |


### Eidos

[App page](https://appshunter.io/ios/app/eidos-brag-book-and-work-proof/id6806091249)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Eidos Pro | $3.99 | per month |
| Eidos Pro | $29.99 | per year |
| Eidos Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is F2S free?

F2S is free to download, with in-app purchases available.

### Is Eidos free?

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

### Do F2S or Eidos have ads?

F2S shows ads; Eidos does not.

### Which is updated more often, F2S or Eidos?

F2S ships an update every 3 weeks, and Eidos every 2 days. Most recently, F2S was updated on November 5, 2026 and Eidos on November 10, 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.*