# Open Polytechnic Library vs iBookGuru

The clearest difference is in-app purchases: Open Polytechnic Library at none against iBookGuru's 2. iBookGuru's advantage is update cadence (monthly vs every 43 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. iBookGuru sells 2 one-off in-app purchases. Open Polytechnic Library asks for nothing beyond the download.

Open Polytechnic Library ships an update every 43 months, iBookGuru monthly. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Open Polytechnic Library | iBookGuru |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 43 months | **Monthly** |
| Size | 43 MB | 51 MB |
| Requires iOS | **26.0** | 26.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Stacks Inc.](https://appshunter.io/developer/1275752393) | [Aleh Mazol](https://appshunter.io/developer/1687107967) |

## What reviewers say

### Open Polytechnic Library

[App page](https://appshunter.io/ios/app/open-polytechnic-library/id6443709955)

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

**In-app purchases:** none


### iBookGuru

[App page](https://appshunter.io/ios/app/ibookguru-ebooks-library-app/id6759550822)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-Day Free Trial | Free | one-time |
| Pro (Lifetime) | $19.99 | one-time |


## Frequently asked questions

### Is Open Polytechnic Library free?

Open Polytechnic Library is free to download, with no in-app purchases.

### Is iBookGuru free?

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

### Do Open Polytechnic Library or iBookGuru have ads?

Neither Open Polytechnic Library nor iBookGuru shows ads.

### Which is updated more often, Open Polytechnic Library or iBookGuru?

Open Polytechnic Library ships an update every 43 months, and iBookGuru monthly. Most recently, Open Polytechnic Library was updated on October 16, 2026 and iBookGuru on October 3, 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.*