# Second Brain vs Sage

The clearest difference is iOS requirement: Second Brain at 17.0 against Sage's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Second Brain sells 2 in-app purchases, starting at $4.99 per month and Sage sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Second Brain | Sage |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Freemium | — |
| Size | 12 MB | 21 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Liwei Xie](https://appshunter.io/developer/1106616046) | [Maksim Ermolaev](https://appshunter.io/developer/1895800232) |

## What reviewers say

### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-know-yourself/id6760254340)

Capture your thoughts and get weekly insights into your week's focus, changes, and actionable advice. Search your notes by meaning, manage contacts, and set reminders with ease. Your personal reflection tool, designed for daily use.

**Highlights:** Weekly self-insight reports, Search notes by meaning, Contact management, Automated titling and tagging, Reminders and checklists, On-device and cloud AI options, Data export (JSON/Markdown)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Pro | $4.99 | per month |
| Second Brain Pro | $39.99 | per year |


### 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 |


## Frequently asked questions

### Is Second Brain free?

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

### Is Sage free?

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

### Do Second Brain or Sage have ads?

Neither Second Brain nor Sage 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.*