# Trustbook vs Prism

The clearest difference is in-app purchases: Trustbook at none against Prism's 2. Trustbook also leads on iOS requirement (16.6 vs 26.0). Prism's advantage is update cadence (every 5 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Prism sells 2 in-app purchases, starting at $4.99 per month. Trustbook asks for nothing beyond the download.

Trustbook ships an update every 6 weeks, Prism every 5 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Trustbook | Prism |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/trustbook/id6746893028/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 31 MB | 15 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Trustbook AG](https://appshunter.io/developer/1759976925) | [Iurii Istomin](https://appshunter.io/developer/1561482608) |

## What reviewers say

### Trustbook

[App page](https://appshunter.io/ios/app/trustbook/id6746893028)

This app centralizes and simplifies your contracts and insurance policies. It uses AI to summarize terms, uncover hidden costs, and help you negotiate better deals. Securely store all your important documents in one place for easy access and management.

**Highlights:** Centralized contract storage, AI-powered term simplification, Hidden cost identification, Natural language contract queries, Automated negotiation email drafting, Privacy-focused data handling

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

**In-app purchases:** none


### Prism

[App page](https://appshunter.io/ios/app/prism-visual-day-planner/id6751152159)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prism Pro (Monthly) | $4.99 | per month |
| Prism Pro (Annual) | $34.99 | per year |


## Frequently asked questions

### Is Trustbook free?

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

### Is Prism free?

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

### Do Trustbook or Prism have ads?

Neither Trustbook nor Prism shows ads.

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

Trustbook ships an update every 6 weeks, and Prism every 5 days. Most recently, Trustbook was updated on October 16, 2026 and Prism on October 6, 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.*