# Usign vs Physics AI Photo Solver

The clearest difference is in-app purchases: Usign at none against Physics AI Photo Solver's 2. Usign also leads on iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Physics AI Photo Solver sells 2 in-app purchases, starting at $3.99 per 7 days. Usign asks for nothing beyond the download.

## The numbers

| Metric | Usign | Physics AI Photo Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 9 months |
| Size | 73 MB | 17 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Javanet Systems Ltd](https://appshunter.io/developer/1528705624) | [Kamalkumar Trapasiya](https://appshunter.io/developer/1587617174) |

## What reviewers say

### Usign

[App page](https://appshunter.io/ios/app/usign/id6449244653)

**Features:** macOS Compatibility

**In-app purchases:** none


### Physics AI Photo Solver

[App page](https://appshunter.io/ios/app/physics-ai-photo-solver/id6747112514)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $3.99 | per 7 days |
| Yearly Access | $19.99 | per year |


## Frequently asked questions

### Is Usign free?

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

### Is Physics AI Photo Solver free?

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

### Do Usign or Physics AI Photo Solver have ads?

Neither Usign nor Physics AI Photo Solver 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.*