# My OPAC vs MAK

The clearest difference is in-app purchases: My OPAC at none against MAK's 3. My OPAC also leads on update cadence (every 5 weeks vs every 5 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. MAK sells 3 in-app purchases, starting at $4.99 per month. My OPAC asks for nothing beyond the download.

My OPAC ships an update every 5 weeks, MAK every 5 months. The most recent releases landed on June 25, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | My OPAC | MAK |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | Free | — |
| Size | 3 MB | 50 MB |
| Requires iOS | **6.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pyramid Software and Consulting Company Limited](https://appshunter.io/developer/885416042) | [META ARBITRATION KING COMPANY LIMITED](https://appshunter.io/developer/1791039428) |

## What reviewers say

### My OPAC

[App page](https://appshunter.io/ios/app/my-opac/id965464674)

This application serves as a digital catalog and e-reader for library collections. It allows users to search for and access library resources on various digital devices. The app is available for free on multiple operating systems.

**Highlights:** Digital library catalog, E-book reader, Search library resources, Cross-device compatibility, Free to use

**Features:** macOS Compatibility

**In-app purchases:** none


### MAK

[App page](https://appshunter.io/ios/app/mak/id6736626501)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Meta Arbitration King Premium | $4.99 | per month |
| Meta Arbitration King Premium | $24.99 | per 6 months |
| Meta Arbitration King Premium | $39.99 | per year |


## Frequently asked questions

### Is My OPAC free?

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

### Is MAK free?

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

### Do My OPAC or MAK have ads?

Neither My OPAC nor MAK shows ads.

### Which is updated more often, My OPAC or MAK?

My OPAC ships an update every 5 weeks, and MAK every 5 months. Most recently, My OPAC was updated on June 25, 2026 and MAK on September 13, 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.*