# Second Brain vs PlainMind

The clearest difference is update cadence: PlainMind at every 3 days against Second Brain's every 3 months. Second Brain's advantage is iOS requirement (15.0 vs 26.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Second Brain sells 1 one-off in-app purchase and PlainMind sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Second Brain ships an update every 3 months, PlainMind every 3 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Second Brain | PlainMind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/plainmind-save-and-organize/id6780289082/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 25 MB | 18 MB |
| Requires iOS | **15.0** | 26.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Selahattin Bozat](https://appshunter.io/developer/1895293163) | [Redefined Creative LLC](https://appshunter.io/developer/6780289084) |

## What reviewers say

### Second Brain

[App page](https://appshunter.io/ios/app/second-brain-notes-and-knowledge/id6775839727)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Premium | $9.99 | one-time |


### PlainMind

[App page](https://appshunter.io/ios/app/plainmind-save-and-organize/id6780289082)

This app offers a calm space to save links, images, and ideas, automatically organizing them without manual tagging or folders. It provides a distraction-free experience, allowing you to easily find and revisit your saved content.

**Highlights:** Automatic organization of saved content, Save from any app in one tap, Collections created automatically, Reading mode with table of contents, On-device search, Offline article copies (Pro), Read articles aloud (Pro)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PlainMind Pro — Monthly | $2.99 | per month |
| PlainMind Founder — Annual | $19.99 | per year |
| PlainMind Pro — Annual | $24.99 | per year |


## Frequently asked questions

### Is Second Brain free?

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

### Is PlainMind free?

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

### Do Second Brain or PlainMind have ads?

Neither Second Brain nor PlainMind shows ads.

### Which is updated more often, Second Brain or PlainMind?

Second Brain ships an update every 3 months, and PlainMind every 3 days. Most recently, Second Brain was updated on October 28, 2026 and PlainMind on October 28, 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.*