# Principal Task vs 23Brain

The clearest difference is ads: 23Brain at none against Principal Task's shown. 23Brain also leads on update cadence (every 8 days vs every 2 months) and iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Principal Task sells 2 in-app purchases, starting at $3.99 per month and 23Brain sells 4 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Principal Task ships an update every 2 months, 23Brain every 8 days. The most recent releases landed on June 28, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Principal Task | 23Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/principal-task/id1545072734/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 76 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zechariah Schwenk](https://appshunter.io/developer/1545072736) | [Felix Seip](https://appshunter.io/developer/1819359578) |

## What reviewers say

### Principal Task

[App page](https://appshunter.io/ios/app/principal-task/id1545072734)

This app helps you manage tasks by tracking your completion rate against new tasks created. It offers a unique 'Task Velocity' score to show if you're keeping up with your workload. Organize with folders, contexts, and priorities, with advanced features available through a premium subscription.

**Highlights:** Task Velocity score, GTD-native structure, Due dates and repeating tasks, Markdown support, Kanban boards, Private templates

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $3.99 | per month |
| Annual Subscription | $29.99 | per year |


### 23Brain

[App page](https://appshunter.io/ios/app/23brain/id6748966833)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Monthly) | $12.99 | per month |
| Ultra (Monthly) | $24.99 | per month |
| Pro (Yearly) | $99.99 | per year |
| Ultra (Yearly) | $249.99 | per year |


## Frequently asked questions

### Is Principal Task free?

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

### Is 23Brain free?

23Brain is free to download, with in-app purchases available.

### Do Principal Task or 23Brain have ads?

Principal Task shows ads; 23Brain does not.

### Which is updated more often, Principal Task or 23Brain?

Principal Task ships an update every 2 months, and 23Brain every 8 days. Most recently, Principal Task was updated on June 28, 2026 and 23Brain on September 22, 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.*