# Caeron vs Otto AI

The clearest difference is in-app purchases: Caeron at none against Otto AI's 6. Caeron also leads on update cadence (every 3 days vs every 9 days) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Otto AI sells 6 in-app purchases, starting at $1.99 per 7 days. Caeron asks for nothing beyond the download.

Caeron ships an update every 3 days, Otto AI every 9 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Caeron | Otto AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 9 days |
| Size | 48 MB | 12 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Homemade Private Limited](https://appshunter.io/developer/1778257578) | [Arghyadeep Karmakar](https://appshunter.io/developer/6790373278) |

## What reviewers say

### Caeron

[App page](https://appshunter.io/ios/app/caeron/id6748701820)

**Features:** macOS Compatibility

**In-app purchases:** none


### Otto AI

[App page](https://appshunter.io/ios/app/otto-ai-email-assistant/id6790373276)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Otto Plus | $1.99 | per 7 days |
| Otto Pro | $5.99 | per 7 days |
| Otto Plus | $6.99 | per month |
| Otto Pro | $19.99 | per month |
| Otto Plus | $55.99 | per year |
| Otto Pro | $159.99 | per year |


## Frequently asked questions

### Is Caeron free?

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

### Is Otto AI free?

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

### Do Caeron or Otto AI have ads?

Neither Caeron nor Otto AI shows ads.

### Which is updated more often, Caeron or Otto AI?

Caeron ships an update every 3 days, and Otto AI every 9 days. Most recently, Caeron was updated on October 25, 2026 and Otto AI on October 31, 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.*