# proLibro vs Flumen

The clearest difference is update cadence: Flumen at every 9 days against proLibro's monthly. proLibro's advantage is device support (4 vs 2) and iOS requirement (13.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. proLibro sells 6 one-off in-app purchases and Flumen sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

proLibro ships an update monthly, Flumen every 9 days. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | proLibro | Flumen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Size | 55 MB | 16 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [CogniLore](https://appshunter.io/developer/566392511) | [Mathias Jaeger-Pedersen](https://appshunter.io/developer/1848104509) |

## What reviewers say

### proLibro

[App page](https://appshunter.io/ios/app/prolibro/id6499159159)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase 200 proLibro Credits | $2.99 | one-time |
| Purchase 500 proLibro Credits | $6.99 | one-time |
| Purchase 1000 proLibro Credits | $12.99 | one-time |
| Purchase 2000 proLibro Credits | $24.99 | one-time |
| Purchase 5000 proLibro Credits | $64.99 | one-time |
| Buy 10 000 proLibro Credits | $129.99 | one-time |


### 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 proLibro free?

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

### Is Flumen free?

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

### Do proLibro or Flumen have ads?

Neither proLibro nor Flumen shows ads.

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

proLibro ships an update monthly, and Flumen every 9 days. Most recently, proLibro was updated on November 8, 2026 and Flumen 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.*