# Commonplace vs BrainSober

The clearest difference is ads: Commonplace at none against BrainSober's shown. Commonplace also leads on iOS requirement (16.4 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Commonplace sells 2 in-app purchases, starting at $3.99 per month and BrainSober sells 3 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Commonplace ships an update daily, BrainSober every 2 days. Both last shipped on October 7, 2026.

## The numbers

| Metric | Commonplace | BrainSober |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/commonplace-book-notes/id6802507010/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 days |
| Monetization | Subscription | — |
| Size | 50 MB | 41 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DK Data Science](https://appshunter.io/developer/6798345241) | [Fritz doebel](https://appshunter.io/developer/1894016204) |

## What reviewers say

### Commonplace

[App page](https://appshunter.io/ios/app/commonplace-book-notes/id6802507010)

This app helps you retain information from books and audiobooks by prompting you to write down your thoughts after each chapter. It then asks you questions to reinforce learning and provides a summary of your notes when you finish.

**Highlights:** Chapter-based note-taking, Active recall prompts, Customizable questions, End-of-book summaries, Export notes (text/JSON), Ad-free experience

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Commonplace Monthly | $3.99 | per month |
| Commonplace Yearly | $29.99 | per year |


### BrainSober

[App page](https://appshunter.io/ios/app/brainsober/id6804400630)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BrainSober Pro Weekly | $8.99 | per 7 days |
| BrainSober Rescue Annual | $29.99 | per year |
| BrainSober Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is Commonplace free?

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

### Is BrainSober free?

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

### Do Commonplace or BrainSober have ads?

BrainSober shows ads; Commonplace does not.

### Which is updated more often, Commonplace or BrainSober?

Commonplace ships an update daily, and BrainSober every 2 days. Most recently, Commonplace was updated on October 7, 2026 and BrainSober on October 7, 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.*