# StudyOS vs UniRadar

The clearest difference is in-app purchases: UniRadar at none against StudyOS's 4. UniRadar also leads on update cadence (every 2 days vs every 9 days) and iOS requirement (15.0 vs 17.1). On price, ads and device support there is nothing between them.

Both are free to download. StudyOS sells 4 in-app purchases, starting at $4.99 per 7 days. UniRadar asks for nothing beyond the download.

StudyOS ships an update every 9 days, UniRadar every 2 days. The most recent releases landed on October 20, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | StudyOS | UniRadar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (66 ratings)](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382/reviews)** | — |
| Number of ratings | **66** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 118 MB | 27 MB |
| Requires iOS | 17.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [DANIEL PONCELAS VARGAS](https://appshunter.io/developer/1823171837) | [ALESSANDRO LO VERSO](https://appshunter.io/developer/1886460066) |

## What reviewers say

### StudyOS

[App page](https://appshunter.io/ios/app/studyos-study-with-ai/id6747879382)

Transform your study materials into interactive flashcards, summaries, and quizzes with AI. This app efficiently prepares you for exams and helps you master concepts on the go, making learning faster and more engaging.

**Highlights:** AI-generated flashcards, Automated summaries, Personalized quizzes, Material upload (notes, PDFs, images), Spaced repetition techniques, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | per 7 days |
| Premium Access | $12.99 | per month |
| Premium Access | $12.99 | per month |
| Premium Access | $69.99 | per year |


### UniRadar

[App page](https://appshunter.io/ios/app/uniradar/id6760836173)

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

**In-app purchases:** none


## Frequently asked questions

### Is StudyOS free?

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

### Is UniRadar free?

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

### Do StudyOS or UniRadar have ads?

Neither StudyOS nor UniRadar shows ads.

### Which is updated more often, StudyOS or UniRadar?

StudyOS ships an update every 9 days, and UniRadar every 2 days. Most recently, StudyOS was updated on October 20, 2026 and UniRadar on October 23, 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.*