# Библиотека F5 vs Book tracker & log

The clearest difference is in-app purchases: Библиотека F5 at none against Book tracker & log's 3. Библиотека F5 also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (11.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Book tracker & log sells 3 in-app purchases, starting at $7.99 per month. Библиотека F5 asks for nothing beyond the download.

Библиотека F5 ships an update every 3 weeks, Book tracker & log every 2 months. The most recent releases landed on October 10, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Библиотека F5 | Book tracker & log |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 9 MB | 44 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [IZDATELSTVO LAN, OOO](https://appshunter.io/developer/1162703375) | [Alpay Vodenicharov](https://appshunter.io/developer/1708576910) |

## What reviewers say

### Библиотека F5

[App page](https://appshunter.io/ios/app/f5/id1311381559)

Access a vast catalog of scientific literature and periodicals from a major online bookstore. Obtain an invitation code from a public library to read books for free and legally. Enjoy offline access to downloaded documents.

**Highlights:** Free legal access to scientific literature, Access to periodicals, Offline document access, PDF and ePUB reading system, In-document text search

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

**In-app purchases:** none


### Book tracker & log

[App page](https://appshunter.io/ios/app/book-tracker-and-log-rec/id6742798956)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rec Monthly Subscription | $7.99 | per month |
| Rec Yearly Subscription Deal | $17.99 | per year |
| Rec Yearly Subscription | $29.99 | per year |


## Frequently asked questions

### Is Библиотека F5 free?

Библиотека F5 is free to download, with no in-app purchases.

### Is Book tracker & log free?

Book tracker & log is free to download, with in-app purchases available.

### Do Библиотека F5 or Book tracker & log have ads?

Neither Библиотека F5 nor Book tracker & log shows ads.

### Which is updated more often, Библиотека F5 or Book tracker & log?

Библиотека F5 ships an update every 3 weeks, and Book tracker & log every 2 months. Most recently, Библиотека F5 was updated on October 10, 2026 and Book tracker & log on October 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.*