# LUMEN vs Notix

The clearest difference is in-app purchases: LUMEN at none against Notix's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Notix sells 3 in-app purchases, starting at $6.99 per 7 days. LUMEN asks for nothing beyond the download.

LUMEN ships an update every 9 days, Notix weekly. The most recent releases landed on November 9, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | LUMEN | Notix |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Weekly** |
| Size | 28 MB | 103 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jaewhan Namkoong](https://appshunter.io/developer/1872906976) | [TAHSIN OMER ICURTDAS](https://appshunter.io/developer/1879814043) |

## What reviewers say

### LUMEN

[App page](https://appshunter.io/ios/app/lumen/id6758431652)

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

**In-app purchases:** none


### Notix

[App page](https://appshunter.io/ios/app/notix-ai-study-notes-and-quiz/id6759614614)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Notix AI Pro (Weekly) | $6.99 | per 7 days |
| Notix AI Pro (Monthly) | $13.99 | per month |
| Notix AI Pro (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is LUMEN free?

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

### Is Notix free?

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

### Do LUMEN or Notix have ads?

Neither LUMEN nor Notix shows ads.

### Which is updated more often, LUMEN or Notix?

LUMEN ships an update every 9 days, and Notix weekly. Most recently, LUMEN was updated on November 9, 2026 and Notix on November 7, 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.*