# COBIDU vs STEM Discovery Campaign

The clearest difference is update cadence: STEM Discovery Campaign at every 6 weeks against COBIDU's every 9 months. STEM Discovery Campaign also leads on iOS requirement (11.0 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.

COBIDU ships an update every 9 months, STEM Discovery Campaign every 6 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | COBIDU | STEM Discovery Campaign |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stem-discovery-campaign/id1668152623/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 58 MB | 39 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [INTRON INC](https://appshunter.io/developer/1661133752) | [EUN Partnership AISBL](https://appshunter.io/developer/1293134978) |

## What reviewers say

### COBIDU

[App page](https://appshunter.io/ios/app/cobidu/id1661133750)

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

**In-app purchases:** none


### STEM Discovery Campaign

[App page](https://appshunter.io/ios/app/stem-discovery-campaign/id1668152623)

Explore and submit STEM activities worldwide on an interactive map. Discover partner projects, learn about different STEM events, and filter entries to find what interests you. Participate in exciting competitions and win awards.

**Highlights:** Browse STEM activities on a map, Submit your own STEM activities, View partner projects, Discover diverse STEM events, Filter map and feed entries, Participate in competitions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is COBIDU free?

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

### Is STEM Discovery Campaign free?

STEM Discovery Campaign is free to download, with no in-app purchases.

### Do COBIDU or STEM Discovery Campaign have ads?

Neither COBIDU nor STEM Discovery Campaign shows ads.

### Which is updated more often, COBIDU or STEM Discovery Campaign?

COBIDU ships an update every 9 months, and STEM Discovery Campaign every 6 weeks. Most recently, COBIDU was updated on November 3, 2026 and STEM Discovery Campaign on November 3, 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.*