# TheoriePLUS vs NavoKids

The clearest difference is in-app purchases: TheoriePLUS at none against NavoKids's 3. NavoKids's advantage is update cadence (every 3 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NavoKids sells 3 in-app purchases, starting at $3.99 per month. TheoriePLUS asks for nothing beyond the download.

TheoriePLUS ships an update every 4 months, NavoKids every 3 weeks. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | TheoriePLUS | NavoKids |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 240 MB | 350 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fahrschul Media GmbH](https://appshunter.io/developer/1638578344) | [Piotr Kaminski](https://appshunter.io/developer/6799375980) |

## What reviewers say

### TheoriePLUS

[App page](https://appshunter.io/ios/app/theorieplus/id1638578342)

**In-app purchases:** none


### NavoKids

[App page](https://appshunter.io/ios/app/navokids-learning-islands/id6809038305)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NavoKids Premium monthly | $3.99 | per month |
| NavoKids Premium yearly | $24.99 | per year |
| NavoKids Premium lifetime | $49.99 | one-time |


## Frequently asked questions

### Is TheoriePLUS free?

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

### Is NavoKids free?

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

### Do TheoriePLUS or NavoKids have ads?

Neither TheoriePLUS nor NavoKids shows ads.

### Which is updated more often, TheoriePLUS or NavoKids?

TheoriePLUS ships an update every 4 months, and NavoKids every 3 weeks. Most recently, TheoriePLUS was updated on November 3, 2026 and NavoKids on October 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.*