# Sage vs Second Brain

The clearest difference is iOS requirement: Second Brain at 18.0 against Sage's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sage sells 2 in-app purchases, starting at $8.99 per month and Second Brain sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Sage | Second Brain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 5 days |
| Size | 21 MB | 55 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Maksim Ermolaev](https://appshunter.io/developer/1895800232) | [Terra Innovations](https://appshunter.io/developer/1789492814) |

## What reviewers say

### Sage

[App page](https://appshunter.io/ios/app/sage-ai-notes-and-thoughts/id6783255310)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sage Plus Monthly | $8.99 | per month |
| Sage Plus Yearly | $59.99 | per year |


### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-ai-assistant/id6792532203)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Monthly | $29.99 | per month |


## Frequently asked questions

### Is Sage free?

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

### Is Second Brain free?

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

### Do Sage or Second Brain have ads?

Neither Sage nor Second Brain shows ads.

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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.*