# Pillowbook vs Prism

The clearest difference is iOS requirement: Prism at 13.0 against Pillowbook's 16.4. 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Pillowbook | Prism |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/pillowbook-dream-decoder/id6775021552/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 42 MB | 31 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [AndyTech, Inc](https://appshunter.io/developer/1679172216) | [Gunawan Santoso](https://appshunter.io/developer/1843786072) |

## What reviewers say

### Pillowbook

[App page](https://appshunter.io/ios/app/pillowbook-dream-decoder/id6775021552)

Record your dreams and receive personalized interpretations based on a vast library of symbols and your unique personal history. This app builds a knowledge graph of your dream elements to reveal recurring themes and connections.

**Highlights:** Dream journaling, Personalized dream interpretation, Symbol library, Knowledge graph of dream elements, Theme and connection analysis

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

**In-app purchases:** none


### Prism

[App page](https://appshunter.io/ios/app/prism-personality-test/id6787878055)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pillowbook free?

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

### Is Prism free?

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

### Do Pillowbook or Prism have ads?

Neither Pillowbook nor Prism shows ads.

### Which is updated more often, Pillowbook or Prism?

Pillowbook ships an update every 3 weeks, and Prism every 3 weeks. Most recently, Pillowbook was updated on October 24, 2026 and Prism on October 17, 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.*