# IPST Catalog vs Hytexts eBook Store

The clearest difference is in-app purchases: IPST Catalog at none against Hytexts eBook Store's 31. IPST Catalog also leads on iOS requirement (9.0 vs 15.6). Hytexts eBook Store's advantage is update cadence (monthly vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Hytexts eBook Store sells 31 one-off in-app purchases. IPST Catalog asks for nothing beyond the download.

IPST Catalog ships an update every 6 months, Hytexts eBook Store monthly. The most recent releases landed on May 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | IPST Catalog | Hytexts eBook Store |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.2 (9 ratings)](https://appshunter.io/ios/app/hytexts-ebook-store/id908903530/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 53.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 75 MB | 101 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [The Institute for the Promotion of Teaching Science and Technology (IPST)](https://appshunter.io/developer/643591471) | [Hytexts Interactive Limited](https://appshunter.io/developer/1289188993) |

## What reviewers say

### IPST Catalog

[App page](https://appshunter.io/ios/app/ipst-catalog/id772847993)

**Features:** macOS Compatibility

**In-app purchases:** none


### Hytexts eBook Store

[App page](https://appshunter.io/ios/app/hytexts-ebook-store/id908903530)

Easily read and purchase Thai eBooks in ePUB and PDF formats. Customize your reading experience with adjustable text size, colors, and background. Sync your progress across devices and read offline.

**Highlights:** Read ePUB3 (Flow layout) and PDF files, Purchase Thai eBooks directly in-app, Adjust text size, color, and background, Sync reading progress across devices, Offline reading of downloaded books, Highlight and save text (ePUB only), Night reading mode

**Features:** Vision Pro support

**In-app purchases (31)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EBOOK price tier 19B | $0.99 | one-time |
| EBOOK price tier 1 | $0.99 | one-time |
| EBOOK price tier 2 | $1.99 | one-time |
| EBOOK price tier 3 | $2.99 | one-time |
| EBOOK price tier 4 | $3.99 | one-time |
| พายุรัก กับดักเสน่หา | $4.99 | one-time |
| EBOOK price tier 5 | $4.99 | one-time |
| hytexts credits $5.99 | $5.99 | one-time |
| EBOOK price tier 6 | $5.99 | one-time |
| มณีมาลา | $6.99 | one-time |
| ปมกามเทพ | $6.99 | one-time |
| EBOOK price tier 7 | $6.99 | one-time |
| เจตน์ | $7.99 | one-time |
| EBOOK price tier 8 | $7.99 | one-time |
| EBOOK price tier 9 | $8.99 | one-time |
| B000461 | $9.99 | one-time |
| B001073 | $9.99 | one-time |
| แม่สื่อแสนรัก | $9.99 | one-time |
| พลิกเกมร้ายล่าเกมรัก | $9.99 | one-time |
| เเค้นรักจ้าวหัวใจ | $9.99 | one-time |
| เขย่ารักมาเฟีย ภาค 3 | $9.99 | one-time |
| hytexts credits $9.99 | $9.99 | one-time |
| EBOOK price tier 10 | $9.99 | one-time |
| EBOOK price tier 11 | $10.99 | one-time |
| hytexts credit $11.99 | $11.99 | one-time |
| EBOOK price tier 12 | $11.99 | one-time |
| EBOOK price tier 13 | $12.99 | one-time |
| EBOOK price tier 15 | $14.99 | one-time |
| EBOOK price tier 17 | $16.99 | one-time |
| hytexts credits $19.99 | $19.99 | one-time |
| hytexts credits $29.99 | $29.99 | one-time |


## Frequently asked questions

### Is IPST Catalog free?

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

### Is Hytexts eBook Store free?

Hytexts eBook Store is free to download, with in-app purchases available.

### Do IPST Catalog or Hytexts eBook Store have ads?

Neither IPST Catalog nor Hytexts eBook Store shows ads.

### Which is updated more often, IPST Catalog or Hytexts eBook Store?

IPST Catalog ships an update every 6 months, and Hytexts eBook Store monthly. Most recently, IPST Catalog was updated on May 16, 2026 and Hytexts eBook Store on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*