# Objects Investigator vs Learn Operating System

The clearest difference is in-app purchases: Objects Investigator at none against Learn Operating System's 1. Objects Investigator also leads on iOS requirement (12.4 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Learn Operating System sells 1 one-off in-app purchase. Objects Investigator asks for nothing beyond the download.

## The numbers

| Metric | Objects Investigator | Learn Operating System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/learn-operating-system/id6446438155/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 16 months |
| Monetization | — | Free with in-app purchases |
| Size | 121 MB | 29 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CHISW Development LTD](https://appshunter.io/developer/1439571073) | [Ghumman Tech LLC](https://appshunter.io/developer/1671347750) |

## What reviewers say

### Objects Investigator

[App page](https://appshunter.io/ios/app/objects-investigator/id1518561696)

**Features:** macOS Compatibility

**In-app purchases:** none


### Learn Operating System

[App page](https://appshunter.io/ios/app/learn-operating-system/id6446438155)

Master operating system concepts through concise study sessions and interactive quizzes. This app offers audio pronunciation of technical terms and bookmarking for flashcards and questions, aiding efficient learning and progress tracking.

**Highlights:** Audio pronunciation of OS terms, Text-to-Speech engine, Interactive quizzes, Study mode, Bookmarking flashcards and questions, Progress indicators, Progress visualization

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $9.99 | one-time |


## Frequently asked questions

### Is Objects Investigator free?

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

### Is Learn Operating System free?

Learn Operating System is free to download, with in-app purchases available.

### Do Objects Investigator or Learn Operating System have ads?

Neither Objects Investigator nor Learn Operating System shows ads.

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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.*