# Infinity Book vs REDDO

Infinity Book and REDDO are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Infinity Book | REDDO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 175 MB | 16 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Elfinbook SRL](https://appshunter.io/developer/6778315449) | [Orbesoftware](https://appshunter.io/developer/1845113548) |

## What reviewers say

### Infinity Book

[App page](https://appshunter.io/ios/app/infinity-book/id6529560065)

**In-app purchases:** none


### REDDO

[App page](https://appshunter.io/ios/app/reddo/id6754045412)

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

**In-app purchases:** none


## Frequently asked questions

### Is Infinity Book free?

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

### Is REDDO free?

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

### Do Infinity Book or REDDO have ads?

Neither Infinity Book nor REDDO shows ads.

### Which is updated more often, Infinity Book or REDDO?

Infinity Book ships an update fortnightly, and REDDO fortnightly. Most recently, Infinity Book was updated on October 27, 2026 and REDDO on October 28, 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.*