# LUMEN vs StudyDay

The clearest difference is ads: LUMEN at none against StudyDay's shown. On price, update cadence, 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.

LUMEN ships an update every 9 days, StudyDay every 2 weeks. The most recent releases landed on September 18, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | LUMEN | StudyDay |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Size | 28 MB | 5 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jaewhan Namkoong](https://appshunter.io/developer/1872906976) | [Jinyoung Lee](https://appshunter.io/developer/1250427645) |

## What reviewers say

### LUMEN

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

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

**In-app purchases:** none


### StudyDay

[App page](https://appshunter.io/ios/app/studyday-pomodoro-timer/id6772432314)

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

**In-app purchases:** none


## Frequently asked questions

### Is LUMEN free?

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

### Is StudyDay free?

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

### Do LUMEN or StudyDay have ads?

StudyDay shows ads; LUMEN does not.

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

LUMEN ships an update every 9 days, and StudyDay every 2 weeks. Most recently, LUMEN was updated on September 18, 2026 and StudyDay on September 27, 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.*