# UBL vs Physics AI

The clearest difference is in-app purchases: UBL at none against Physics AI's 2. UBL also leads on iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Physics AI sells 2 in-app purchases, starting at $4.99 per 7 days. UBL asks for nothing beyond the download.

## The numbers

| Metric | UBL | Physics AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 153 MB | 45 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [NSdevil](https://appshunter.io/developer/372526203) | [Samuel Ojo](https://appshunter.io/developer/1803866127) |

## What reviewers say

### UBL

[App page](https://appshunter.io/ios/app/ubl-cloud/id6449698673)

**Features:** macOS Compatibility

**In-app purchases:** none


### Physics AI

[App page](https://appshunter.io/ios/app/physics-ai-problem-solver/id6757343818)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Weekly | $4.99 | per 7 days |
| PRO Yearly | $24.99 | per year |


## Frequently asked questions

### Is UBL free?

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

### Is Physics AI free?

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

### Do UBL or Physics AI have ads?

Neither UBL nor Physics 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.*