# Preface.ai vs Rightmind

The clearest difference is iOS requirement: Rightmind at 9.0 against Preface.ai's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Preface.ai ships an update every 3 weeks, Rightmind every 10 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Preface.ai | Rightmind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Size | 64 MB | 118 MB |
| Requires iOS | 15.1 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Preface Coding](https://appshunter.io/developer/1567531648) | [BULL.B TECHNOLOGY LIMITED](https://appshunter.io/developer/996574459) |

## What reviewers say

### Preface.ai

[App page](https://appshunter.io/ios/app/prefaceai/id6541761017)

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

**In-app purchases:** none


### Rightmind

[App page](https://appshunter.io/ios/app/rightmind/id6670190502)

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

**In-app purchases:** none


## Frequently asked questions

### Is Preface.ai free?

Preface.ai is free to download, with no in-app purchases.

### Is Rightmind free?

Rightmind is free to download, with no in-app purchases.

### Do Preface.ai or Rightmind have ads?

Neither Preface.ai nor Rightmind shows ads.

### Which is updated more often, Preface.ai or Rightmind?

Preface.ai ships an update every 3 weeks, and Rightmind every 10 days. Most recently, Preface.ai was updated on October 8, 2026 and Rightmind on October 10, 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.*