# Gravity Math vs MedFlash by EtemiDev

The clearest difference is price: MedFlash by EtemiDev at Free against Gravity Math's $2.99. Gravity Math's advantage is iOS requirement (12.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

MedFlash by EtemiDev is free to download; Gravity Math costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Gravity Math | MedFlash by EtemiDev |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Size | 17 MB | 29 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Sergey Malugin](https://appshunter.io/developer/562782409) | [Gentiana Etemi](https://appshunter.io/developer/1883027493) |

## What reviewers say

### Gravity Math

[App page](https://appshunter.io/ios/app/gravity-math/id1453330374)

**Features:** macOS Compatibility

**In-app purchases:** none


### MedFlash by EtemiDev

[App page](https://appshunter.io/ios/app/medflash-by-etemidev/id6760933861)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gravity Math free?

Gravity Math costs $2.99, with no in-app purchases.

### Is MedFlash by EtemiDev free?

MedFlash by EtemiDev is free to download, with no in-app purchases.

### Do Gravity Math or MedFlash by EtemiDev have ads?

Neither Gravity Math nor MedFlash by EtemiDev 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.*