# SonnoryAI vs Cathedra

The clearest difference is in-app purchases: SonnoryAI at none against Cathedra's 6. SonnoryAI also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). Cathedra's advantage is ads (none vs shown) and update cadence (every 5 days vs every 2 weeks). On price there is nothing between them.

Both are free to download. Cathedra sells 6 in-app purchases, starting at $3.99 per month. SonnoryAI asks for nothing beyond the download.

SonnoryAI ships an update every 2 weeks, Cathedra every 5 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SonnoryAI | Cathedra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Size | 35 MB | 20 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DASOL KWON](https://appshunter.io/developer/1871216422) | [REMZI ATASAGUN POYRAZOGLU](https://appshunter.io/developer/6791637217) |

## What reviewers say

### SonnoryAI

[App page](https://appshunter.io/ios/app/sonnoryai/id6760811964)

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

**In-app purchases:** none


### Cathedra

[App page](https://appshunter.io/ios/app/cathedra/id6802411051)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cathedra Plus | $3.99 | per month |
| Cathedra Pro | $11.99 | per month |
| Cathedra Max | $24.99 | per month |
| Cathedra Plus | $24.99 | per year |
| Cathedra Pro | $69.99 | per year |
| Cathedra Max | $149.99 | per year |


## Frequently asked questions

### Is SonnoryAI free?

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

### Is Cathedra free?

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

### Do SonnoryAI or Cathedra have ads?

SonnoryAI shows ads; Cathedra does not.

### Which is updated more often, SonnoryAI or Cathedra?

SonnoryAI ships an update every 2 weeks, and Cathedra every 5 days. Most recently, SonnoryAI was updated on October 31, 2026 and Cathedra on November 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.*