# IPST Catalog vs Hibrary

The clearest difference is update cadence: Hibrary at monthly against IPST Catalog's every 6 months. IPST Catalog's advantage is iOS requirement (9.0 vs 15.6). 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.

IPST Catalog ships an update every 6 months, Hibrary monthly. The most recent releases landed on May 16, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | IPST Catalog | Hibrary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (21 ratings)](https://appshunter.io/ios/app/hibrary/id1519192143/reviews)** |
| Number of ratings | — | **21** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | — | Free |
| Size | 75 MB | 119 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


### Hibrary

[App page](https://appshunter.io/ios/app/hibrary/id1519192143)

An online library application for organizations, offering a vast collection of e-books from various publishers. Users can enjoy offline reading, customize their reading experience with adjustable fonts and brightness, and sync their progress across devices. It supports PDF and ePUB3 formats and is available for free.

**Highlights:** Access e-books from 40 public libraries, Offline reading support, Adjustable font size and style, Multiple reading modes, Sync reading progress across devices, Supports PDF and ePUB3 formats

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

**In-app purchases:** none


## Frequently asked questions

### Is IPST Catalog free?

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

### Is Hibrary free?

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

### Do IPST Catalog or Hibrary have ads?

Neither IPST Catalog nor Hibrary shows ads.

### Which is updated more often, IPST Catalog or Hibrary?

IPST Catalog ships an update every 6 months, and Hibrary monthly. Most recently, IPST Catalog was updated on May 16, 2026 and Hibrary on August 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.*