# Katav vs Psychology Course

The clearest difference is ads: Katav at none against Psychology Course's shown. Katav also leads on update cadence (every 5 days vs every 2 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Both are free to download. Katav sells 8 in-app purchases, starting at $6.99 per month and Psychology Course sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Katav ships an update every 5 days, Psychology Course every 2 months. The most recent releases landed on October 31, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Katav | Psychology Course |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 78 MB | 9 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [William Zimmermann](https://appshunter.io/developer/1281177749) | [Maria Bayas](https://appshunter.io/developer/1178999943) |

## What reviewers say

### Katav

[App page](https://appshunter.io/ios/app/katav/id6772588945)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Katav PRO Monthly | $6.99 | per month |
| Pro | $6.99 | per month |
| Katav MAX Monthly | $9.99 | per month |
| Pro - Quarterly | $19.99 | per 3 months |
| Katav PRO Annual | $29.99 | per year |
| Katav MAX Annual | $44.99 | per year |
| Pro Yearly | $67.99 | per year |
| 99 Extra Subjects | $0.99 | one-time |


### Psychology Course

[App page](https://appshunter.io/ios/app/psychology-course/id6779875233)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscriptions | $1.99 | per month |
| Premium Year | $14.99 | per year |


## Frequently asked questions

### Is Katav free?

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

### Is Psychology Course free?

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

### Do Katav or Psychology Course have ads?

Psychology Course shows ads; Katav does not.

### Which is updated more often, Katav or Psychology Course?

Katav ships an update every 5 days, and Psychology Course every 2 months. Most recently, Katav was updated on October 31, 2026 and Psychology Course on October 7, 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.*