# Otto AR vs Lectio

The clearest difference is in-app purchases: Otto AR at none against Lectio's 2. Lectio's advantage is update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Lectio sells 2 in-app purchases, starting at $7.99 per month. Otto AR asks for nothing beyond the download.

Otto AR ships an update every 2 weeks, Lectio every 4 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Otto AR | Lectio |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Size | 418 MB | 64 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [KSURSF](https://appshunter.io/developer/1867237029) | [Turhan Anil Unkaya](https://appshunter.io/developer/6791992737) |

## What reviewers say

### Otto AR

[App page](https://appshunter.io/ios/app/otto-ar/id6761494762)

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

**In-app purchases:** none


### Lectio

[App page](https://appshunter.io/ios/app/lectio-ai-study/id6798218043)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $7.99 | per month |
| Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Otto AR free?

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

### Is Lectio free?

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

### Do Otto AR or Lectio have ads?

Neither Otto AR nor Lectio shows ads.

### Which is updated more often, Otto AR or Lectio?

Otto AR ships an update every 2 weeks, and Lectio every 4 days. Most recently, Otto AR was updated on October 31, 2026 and Lectio on November 10, 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.*