# Optimal Stride vs E

The clearest difference is iOS requirement: E at 15.0 against Optimal Stride's 17.0. 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 | Optimal Stride | E |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 87 MB | 129 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Wiky Solutions FZ-LLC](https://appshunter.io/developer/1560320546) | [TechMed 3D](https://appshunter.io/developer/964196047) |

## What reviewers say

### Optimal Stride

[App page](https://appshunter.io/ios/app/optimal-stride/id6499208763)

**Features:** macOS Compatibility

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-scan/id6738921951)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optimal Stride free?

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

### Is E free?

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

### Do Optimal Stride or E have ads?

Neither Optimal Stride nor E 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.*