# Developmental Screening vs Odyssey Global Preschool

The clearest difference is update cadence: Odyssey Global Preschool at every 8 days against Developmental Screening's every 6 weeks. Developmental Screening's advantage is iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Developmental Screening ships an update every 6 weeks, Odyssey Global Preschool every 8 days. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Developmental Screening | Odyssey Global Preschool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Size | 61 MB | 183 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Edusar Resources Sdn. Bhd.](https://appshunter.io/developer/1538370927) | [Busy Bees Nurseries Ltd](https://appshunter.io/developer/1450157368) |

## What reviewers say

### Developmental Screening

[App page](https://appshunter.io/ios/app/developmental-screening/id1574460717)

**Features:** macOS Compatibility

**In-app purchases:** none


### Odyssey Global Preschool

[App page](https://appshunter.io/ios/app/odyssey-global-preschool/id6742105286)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Developmental Screening free?

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

### Is Odyssey Global Preschool free?

Odyssey Global Preschool is free to download, with no in-app purchases.

### Do Developmental Screening or Odyssey Global Preschool have ads?

Neither Developmental Screening nor Odyssey Global Preschool shows ads.

### Which is updated more often, Developmental Screening or Odyssey Global Preschool?

Developmental Screening ships an update every 6 weeks, and Odyssey Global Preschool every 8 days. Most recently, Developmental Screening was updated on September 30, 2026 and Odyssey Global Preschool on October 6, 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.*