# IIOE vs Silent Camera Study

The clearest difference is update cadence: Silent Camera Study at every 4 days against IIOE's every 3 months. 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.

IIOE ships an update every 3 months, Silent Camera Study every 4 days. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | IIOE | Silent Camera Study |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 211 MB | 44 MB |
| Requires iOS | **10.3** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [International Centre for Higher Education Innovation under the auspices of UNESCO](https://appshunter.io/developer/1518720734) | [Kuta Yushikai](https://appshunter.io/developer/1550434338) |

## What reviewers say

### IIOE

[App page](https://appshunter.io/ios/app/iioe/id1518720735)

**Features:** macOS Compatibility

**In-app purchases:** none


### Silent Camera Study

[App page](https://appshunter.io/ios/app/silent-camera-study/id1609732229)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IIOE free?

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

### Is Silent Camera Study free?

Silent Camera Study is free to download, with no in-app purchases.

### Do IIOE or Silent Camera Study have ads?

Neither IIOE nor Silent Camera Study shows ads.

### Which is updated more often, IIOE or Silent Camera Study?

IIOE ships an update every 3 months, and Silent Camera Study every 4 days. Most recently, IIOE was updated on October 8, 2026 and Silent Camera Study on October 9, 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.*