# HALIO AI vs Vaulta PDF & Study AI

The clearest difference is iOS requirement: HALIO AI at 15.1 against Vaulta PDF & Study AI's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | HALIO AI | Vaulta PDF & Study AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Size | 36 MB | 10 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Bruce Elgin](https://appshunter.io/developer/1894786778) | [THEODOR TIBERIUS STEFAN](https://appshunter.io/developer/1781964217) |

## What reviewers say

### HALIO AI

[App page](https://appshunter.io/ios/app/halio-ai/id6762595908)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vaulta PDF & Study AI

[App page](https://appshunter.io/ios/app/vaulta-pdf-and-study-ai/id6795444240)

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

**In-app purchases:** none


## Frequently asked questions

### Is HALIO AI free?

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

### Is Vaulta PDF & Study AI free?

Vaulta PDF & Study AI is free to download, with no in-app purchases.

### Do HALIO AI or Vaulta PDF & Study AI have ads?

Neither HALIO AI nor Vaulta PDF & Study AI shows ads.

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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.*