# Green Learning vs KALEO

The clearest difference is in-app purchases: KALEO at none against Green Learning's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Green Learning sells 2 in-app purchases, starting at $3.99 per month. KALEO asks for nothing beyond the download.

Green Learning ships an update every 5 weeks, KALEO every 6 weeks. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Green Learning | KALEO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | Subscription | — |
| Size | 66 MB | 37 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Die Pflanzenschule GbR](https://appshunter.io/developer/1725463366) | [Markus Wittje](https://appshunter.io/developer/1558641746) |

## What reviewers say

### Green Learning

[App page](https://appshunter.io/ios/app/green-learning/id6475961711)

This app offers interactive quizzes based on user-selected subjects and difficulty levels. It features adaptive learning, allowing users to revisit incorrect answers and progress through levels. Users can also compete against others in a quiz arena.

**Highlights:** Customizable quizzes by subject and difficulty, Adaptive learning with repeated incorrect questions, Level progression system, Ability to switch subjects anytime, Competitive quiz arena

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monatliche Zahlung | $3.99 | per month |
| Jährliche Zahlung | $39.90 | per year |


### KALEO

[App page](https://appshunter.io/ios/app/kaleo/id6758654707)

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

**In-app purchases:** none


## Frequently asked questions

### Is Green Learning free?

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

### Is KALEO free?

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

### Do Green Learning or KALEO have ads?

Neither Green Learning nor KALEO shows ads.

### Which is updated more often, Green Learning or KALEO?

Green Learning ships an update every 5 weeks, and KALEO every 6 weeks. Most recently, Green Learning was updated on October 8, 2026 and KALEO on September 29, 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.*