# StudyOS vs Lumnos

The clearest difference is ads: StudyOS at none against Lumnos's shown. Lumnos's advantage is update cadence (every 2 days vs every 9 days) and iOS requirement (15.1 vs 17.1). On price, in-app purchases 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 and Lumnos sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

StudyOS ships an update every 9 days, Lumnos every 2 days. The most recent releases landed on August 12, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | StudyOS | Lumnos |
| --- | --- | --- |
| 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 | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | Freemium | — |
| Size | 118 MB | 64 MB |
| Requires iOS | 17.1 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DANIEL PONCELAS VARGAS](https://appshunter.io/developer/1823171837) | [Yener ERDOLU](https://appshunter.io/developer/1882504577) |

## 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 |


### Lumnos

[App page](https://appshunter.io/ios/app/lumnos-study-timer-and-planner/id6762007944)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lumnos Pro | $0.99 | per month |
| Lumnos Pro | $4.99 | per year |


## Frequently asked questions

### Is StudyOS free?

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

### Is Lumnos free?

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

### Do StudyOS or Lumnos have ads?

Lumnos shows ads; StudyOS does not.

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

StudyOS ships an update every 9 days, and Lumnos every 2 days. Most recently, StudyOS was updated on August 12, 2026 and Lumnos on September 20, 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.*