# Graph Theory Book vs Irk Bitig

The clearest difference is review sentiment: Irk Bitig at 75% against Graph Theory Book's 0%. Graph Theory Book's advantage is rating (5.0 vs 2.5) and iOS requirement (13.1 vs 18.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Graph Theory Book sells 11 one-off in-app purchases and Irk Bitig sells 5 in-app purchases, starting at $1.49 per month. Whichever you choose, the download price is not the number that matters.

Graph Theory Book holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 5 and 2 respectively. Written reviews complicate that: 0% of Graph Theory Book's written reviews are positive against 75% of Irk Bitig's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Graph Theory Book | Irk Bitig |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/graph-theory-book/id614583848/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/irk-bitig/id1535458191/reviews) |
| Number of ratings | **5** | 2 |
| Positive reviews | 0.0% of reviews | **75.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 7 MB | 48 MB |
| Requires iOS | **13.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Reinhard Diestel](https://appshunter.io/developer/614583971) | [Emir Sari](https://appshunter.io/developer/1535458193) |

## What reviewers say

### Graph Theory Book

[App page](https://appshunter.io/ios/app/graph-theory-book/id614583848)

Access and read all eBook editions of a comprehensive graph theory textbook. Enjoy high-quality, searchable PDFs with active cross-references. An optional upgrade allows for PDF annotations.

**Highlights:** Downloadable eBook editions, Multiple language support, Searchable PDF format, Active cross-references, Optional PDF annotation upgrade, Read-only eBook

**Features:** macOS Compatibility

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1. The Basics | $0.99 | one-time |
| 2. Matching, Covering, and Packing | $0.99 | one-time |
| 3. Connectivity | $0.99 | one-time |
| 6. Flows | $0.99 | one-time |
| 9. Ramsey Theory for Graphs | $0.99 | one-time |
| 11. Random Graphs | $0.99 | one-time |
| 12. Minors Trees and WQO | $0.99 | one-time |
| Hints for all the Exercises | $9.99 | one-time |
| Graph Theory | $12.99 | one-time |
| 图论 | $14.99 | one-time |
| English stand-alone pro edition | $32.99 | one-time |


### Irk Bitig

[App page](https://appshunter.io/ios/app/irk-bitig/id1535458191)

Explore an ancient book of omens written in Old Turkic. Discover your fortune by rolling dice, study original texts with transliterations and translations, and track your history and statistics. Support development through optional donations.

**Highlights:** Ancient Turkic book of omens, Fortune telling via dice roll, Original script, transliteration, and translation, History and statistics tracking, Digital book with original images, Customizable text display

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Donation | $1.49 | per month |
| Buy an Amulet | $0.99 | one-time |
| Unlock Omens | $1.99 | one-time |
| Buy Kumys | $1.99 | one-time |
| Buy Pizza | $3.99 | one-time |


## Frequently asked questions

### Is Graph Theory Book free?

Graph Theory Book is free to download, with in-app purchases available.

### Is Irk Bitig free?

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

### Which has better reviews, Graph Theory Book or Irk Bitig?

Graph Theory Book is rated higher. Graph Theory Book averages 5.0 out of 5 from 5 ratings, while Irk Bitig averages 2.5 from 2 ratings.

### Do Graph Theory Book or Irk Bitig have ads?

Neither Graph Theory Book nor Irk Bitig shows ads.

### Which is updated more often, Graph Theory Book or Irk Bitig?

Graph Theory Book ships an update every 2 months, and Irk Bitig every 2 months. Most recently, Graph Theory Book was updated on October 23, 2026 and Irk Bitig on October 24, 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.*