# Lumin vs Sage

The clearest difference is update cadence: Lumin at every 6 days against Sage's every 2 months. Sage's advantage is iOS requirement (17.0 vs 26.0). On price and in-app purchases there is nothing between them.

Both are free to download. Lumin sells 2 in-app purchases, starting at $7.99 per month and Sage sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Lumin ships an update every 6 days, Sage every 2 months. The most recent releases landed on September 13, 2026 and July 8, 2026 respectively.

## The numbers

| Metric | Lumin | Sage |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | **Every 6 days** | Every 2 months |
| Size | 15 MB | 17 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone** | — |
| Age rating | 4+ | 4+ |
| Developer | [Saad Nasser](https://appshunter.io/developer/1785514743) | [Selin Gursoy Yucel](https://appshunter.io/developer/1871760676) |

## What reviewers say

### Lumin

[App page](https://appshunter.io/ios/app/lumin-ai-study-and-pdf-chat/id6752791421)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lumin Monthly Pro | $7.99 | per month |
| Lumin Yearly Pro | $49.99 | per year |


### Sage

[App page](https://appshunter.io/ios/app/sage-study-coach/id6760980821)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Monthly | $4.99 | per month |
| Yearly | $24.99 | per year |


## Frequently asked questions

### Is Lumin free?

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

### Is Sage free?

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

### Which is updated more often, Lumin or Sage?

Lumin ships an update every 6 days, and Sage every 2 months. Most recently, Lumin was updated on September 13, 2026 and Sage on July 8, 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.*