# Ask AI Models vs Notes Index

The clearest difference is iOS requirement: Ask AI Models at 15.0 against Notes Index's 26.0. 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 weekly. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Ask AI Models | Notes Index |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 36 MB | 2 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digital Services LLC (Georgia)](https://appshunter.io/developer/1501484582) | [nedrelow, LLC](https://appshunter.io/developer/474024242) |

## What reviewers say

### Ask AI Models

[App page](https://appshunter.io/ios/app/ask-ai-models/id6773441347)

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

**In-app purchases:** none


### Notes Index

[App page](https://appshunter.io/ios/app/notes-index/id6813248037)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ask AI Models free?

Ask AI Models is free to download, with no in-app purchases.

### Is Notes Index free?

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

### Do Ask AI Models or Notes Index have ads?

Neither Ask AI Models nor Notes Index shows ads.

### Which is updated more often, Ask AI Models or Notes Index?

Ask AI Models ships an update weekly, and Notes Index weekly. Most recently, Ask AI Models was updated on October 1, 2026 and Notes Index on October 2, 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.*