# Calibro Reader vs Readfly

The clearest difference is review sentiment: Readfly at 83% against Calibro Reader's 41%. Readfly also leads on update cadence (every 3 weeks vs every 4 months). Calibro Reader's advantage is in-app purchases (none vs 3) and iOS requirement (7.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Readfly sells 3 in-app purchases, starting at $9.99 per month. Calibro Reader asks for nothing beyond the download.

Calibro Reader ships an update every 4 months, Readfly every 3 weeks. The most recent releases landed on October 6, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Calibro Reader | Readfly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (4 ratings)](https://appshunter.io/ios/app/calibro-reader/id958205905/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 40.5% of reviews | **83.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | **Free** | Freemium |
| Size | 52 MB | 115 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LIBRONET BILGI HIZMETLERI VE YAZILIM SANAYI TICARET LTD STI](https://appshunter.io/developer/958205904) | [ENES CERRAHOGLU](https://appshunter.io/developer/1842658403) |

## What reviewers say

### Calibro Reader

[App page](https://appshunter.io/ios/app/calibro-reader/id958205905)

Access your entire e-book library across all your mobile devices with this comprehensive reading platform. Enjoy a new reading style, share favorite quotes on social media, and keep your library with you anywhere.

**Highlights:** Cross-device e-book access, Unified reading platform, Social media quote sharing, Access purchased e-books, Library management

**Features:** macOS Compatibility

**In-app purchases:** none


### Readfly

[App page](https://appshunter.io/ios/app/readfly/id6470707328)

Enhance your reading speed and efficiency with scientific techniques. This platform helps you consume more books in less time, making the reading experience accessible and effective.

**Highlights:** Scientific speed reading techniques, Efficient book reading, Accessible reading experience, New generation reading platform

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| 3 Months | $24.99 | per 3 months |
| Annual | $89.99 | per year |


## Frequently asked questions

### Is Calibro Reader free?

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

### Is Readfly free?

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

### Do Calibro Reader or Readfly have ads?

Neither Calibro Reader nor Readfly shows ads.

### Which is updated more often, Calibro Reader or Readfly?

Calibro Reader ships an update every 4 months, and Readfly every 3 weeks. Most recently, Calibro Reader was updated on October 6, 2026 and Readfly on September 29, 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.*