# ChatMind vs GetPrincipia

The clearest difference is update cadence: ChatMind at every 3 weeks against GetPrincipia's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChatMind sells 6 one-off in-app purchases and GetPrincipia sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ChatMind ships an update every 3 weeks, GetPrincipia every 2 months. The most recent releases landed on October 5, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ChatMind | GetPrincipia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Size | 47 MB | 38 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KIVI SMART PURCHASING Korlatolt Felelossegu Tarsasag](https://appshunter.io/developer/1792159414) | [Axiom 38 LLC](https://appshunter.io/developer/1887968723) |

## What reviewers say

### ChatMind

[App page](https://appshunter.io/ios/app/chatmind-brain-boost/id6756600826)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Financial clarity | $14.99 | one-time |
| Financial cushion | $14.99 | one-time |
| Personal Brand | $14.99 | one-time |
| Set Goals and Priorities | $14.99 | one-time |
| Time Strategy | $14.99 | one-time |
| Week Under Control | $14.99 | one-time |


### GetPrincipia

[App page](https://appshunter.io/ios/app/getprincipia/id6761139348)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Annual | $44.99 | per year |


## Frequently asked questions

### Is ChatMind free?

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

### Is GetPrincipia free?

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

### Do ChatMind or GetPrincipia have ads?

Neither ChatMind nor GetPrincipia shows ads.

### Which is updated more often, ChatMind or GetPrincipia?

ChatMind ships an update every 3 weeks, and GetPrincipia every 2 months. Most recently, ChatMind was updated on October 5, 2026 and GetPrincipia on October 18, 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.*