# iVision Refractive Demo vs = Math Solver

The clearest difference is in-app purchases: iVision Refractive Demo at none against = Math Solver's 2. iVision Refractive Demo also leads on iOS requirement (13.4 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. = Math Solver sells 2 in-app purchases, starting at $3.99 per month. iVision Refractive Demo asks for nothing beyond the download.

## The numbers

| Metric | iVision Refractive Demo | = Math Solver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 73 MB | 7 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Switt Kongdachalert](https://appshunter.io/developer/741342887) | [JOHN TIMOTHY FOSTER](https://appshunter.io/developer/1877505472) |

## What reviewers say

### iVision Refractive Demo

[App page](https://appshunter.io/ios/app/ivision-refractive-demo/id6502088658)

**Features:** macOS Compatibility

**In-app purchases:** none


### = Math Solver

[App page](https://appshunter.io/ios/app/math-solver/id6759828845)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| = Pro Monthly | $3.99 | per month |
| = Pro Annual | $19.99 | per year |


## Frequently asked questions

### Is iVision Refractive Demo free?

iVision Refractive Demo is free to download, with no in-app purchases.

### Is = Math Solver free?

= Math Solver is free to download, with in-app purchases available.

### Do iVision Refractive Demo or = Math Solver have ads?

Neither iVision Refractive Demo nor = Math 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.*