# Libraryai vs Flumen

The clearest difference is in-app purchases: Libraryai at none against Flumen's 1. Libraryai also leads on iOS requirement (15.1 vs 17.0). Flumen's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Flumen sells 1 one-off in-app purchase. Libraryai asks for nothing beyond the download.

Libraryai ships an update every 2 months, Flumen every 2 weeks. The most recent releases landed on September 11, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Libraryai | Flumen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 28 MB | 18 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Daniil Sukhov](https://appshunter.io/developer/1630543160) | [Mathias Jaeger-Pedersen](https://appshunter.io/developer/1848104509) |

## What reviewers say

### Libraryai

[App page](https://appshunter.io/ios/app/libraryai/id6762076708)

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

**In-app purchases:** none


### Flumen

[App page](https://appshunter.io/ios/app/flumen-ebook-reader/id6776182656)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flumen Pro | $6.99 | one-time |


## Frequently asked questions

### Is Libraryai free?

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

### Is Flumen free?

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

### Do Libraryai or Flumen have ads?

Neither Libraryai nor Flumen shows ads.

### Which is updated more often, Libraryai or Flumen?

Libraryai ships an update every 2 months, and Flumen every 2 weeks. Most recently, Libraryai was updated on September 11, 2026 and Flumen on September 18, 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.*