# Greenfield Zone vs OTKPAMA

The clearest difference is in-app purchases: Greenfield Zone at none against OTKPAMA's 5. Greenfield Zone also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. OTKPAMA sells 5 in-app purchases, starting at $19.99 per year. Greenfield Zone asks for nothing beyond the download.

Greenfield Zone ships an update every 3 weeks, OTKPAMA every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Greenfield Zone | OTKPAMA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (8 ratings)](https://appshunter.io/ios/app/greenfield-zone/id6443661383/reviews)** | — |
| Number of ratings | **8** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 90 MB | 92 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greenfield School](https://appshunter.io/developer/1648151435) | [OTK EDUCATION TECHNOLOGY](https://appshunter.io/developer/1828833215) |

## What reviewers say

### Greenfield Zone

[App page](https://appshunter.io/ios/app/greenfield-zone/id6443661383)

This app connects schools, teachers, and students to manage academic achievements and school activities. Students earn points redeemable for rewards, fostering friendly competition. Parents can also manage points and rewards for younger children.

**Highlights:** Reward point management, Student leaderboards, Class leaderboards, Coin management, Gift redemption, School activity updates

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

**In-app purchases:** none


### OTKPAMA

[App page](https://appshunter.io/ios/app/otkpama/id6749109629)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 CHILD | $19.99 | per year |
| 2 CHILD | $29.99 | per year |
| 4 CHILD | $39.99 | per year |
| 3 CHILD | $39.99 | per year |
| 5 CHILD | $49.99 | per year |


## Frequently asked questions

### Is Greenfield Zone free?

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

### Is OTKPAMA free?

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

### Do Greenfield Zone or OTKPAMA have ads?

Neither Greenfield Zone nor OTKPAMA shows ads.

### Which is updated more often, Greenfield Zone or OTKPAMA?

Greenfield Zone ships an update every 3 weeks, and OTKPAMA every 2 months. Most recently, Greenfield Zone was updated on October 24, 2026 and OTKPAMA on October 25, 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.*