# Prelude Therapy prep vs Rheii

The clearest difference is update cadence: Rheii at every 5 days against Prelude Therapy prep's every 3 weeks. Rheii also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Prelude Therapy prep ships an update every 3 weeks, Rheii every 5 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Prelude Therapy prep | Rheii |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/prelude-therapy-prep/id6761587576/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 3 MB | 27 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Ugochukwu Nwune](https://appshunter.io/developer/1870001353) | [Hye Jin Kwon](https://appshunter.io/developer/1896705125) |

## What reviewers say

### Prelude Therapy prep

[App page](https://appshunter.io/ios/app/prelude-therapy-prep/id6761587576)

This AI-powered companion helps you prepare for therapy sessions by providing a private space to reflect on your week. It uses local processing to transcribe your thoughts, identify emotional patterns, and generate session summaries, all without sending your data to the cloud.

**Highlights:** Voice-to-Insight transcription, Session summary generation, Emotional arc visualization, Identification of recurring themes, Local AI processing, No account required

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

**In-app purchases:** none


### Rheii

[App page](https://appshunter.io/ios/app/rheii/id6769975352)

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

**In-app purchases:** none


## Frequently asked questions

### Is Prelude Therapy prep free?

Prelude Therapy prep is free to download, with no in-app purchases.

### Is Rheii free?

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

### Do Prelude Therapy prep or Rheii have ads?

Neither Prelude Therapy prep nor Rheii shows ads.

### Which is updated more often, Prelude Therapy prep or Rheii?

Prelude Therapy prep ships an update every 3 weeks, and Rheii every 5 days. Most recently, Prelude Therapy prep was updated on October 24, 2026 and Rheii on October 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.*