# Apotemi Açık Kitap vs ESTÜ

The clearest difference is update cadence: ESTÜ at every 3 weeks against Apotemi Açık Kitap's every 2 months. Apotemi Açık Kitap's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Apotemi Açık Kitap ships an update every 2 months, ESTÜ every 3 weeks. The most recent releases landed on October 21, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Apotemi Açık Kitap | ESTÜ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (14 ratings)](https://appshunter.io/ios/app/apotemi-ack-kitap/id1333464218/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 37.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 88 MB | 29 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FERNUS BILISIM HIZMETLERI EGI.DAN. ve TIC.LTD.STI.](https://appshunter.io/developer/927900317) | [Eskisehir Teknik Universitesi](https://appshunter.io/developer/1829406756) |

## What reviewers say

### Apotemi Açık Kitap

[App page](https://appshunter.io/ios/app/apotemi-ack-kitap/id1333464218)

This free application allows users to view solutions to questions found in books. It's a helpful tool for students and learners seeking to understand problem-solving steps.

**Highlights:** View question solutions, Free to use, Supports book-based learning

**Features:** macOS Compatibility

**In-app purchases:** none


### ESTÜ

[App page](https://appshunter.io/ios/app/estu/id6749228751)

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

**In-app purchases:** none


## Frequently asked questions

### Is Apotemi Açık Kitap free?

Apotemi Açık Kitap is free to download, with no in-app purchases.

### Is ESTÜ free?

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

### Do Apotemi Açık Kitap or ESTÜ have ads?

Neither Apotemi Açık Kitap nor ESTÜ shows ads.

### Which is updated more often, Apotemi Açık Kitap or ESTÜ?

Apotemi Açık Kitap ships an update every 2 months, and ESTÜ every 3 weeks. Most recently, Apotemi Açık Kitap was updated on October 21, 2026 and ESTÜ on October 6, 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.*