# Standard Form Extension vs Slope Calc

The clearest difference is iOS requirement: Standard Form Extension at 13.1 against Slope Calc's 15.6. 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 | Standard Form Extension | Slope Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 34 months |
| Size | 1 MB | 19 MB |
| Requires iOS | **13.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ahmad Sattar](https://appshunter.io/developer/1458483953) | [Abdul Rehman](https://appshunter.io/developer/1606519308) |

## What reviewers say

### Standard Form Extension

[App page](https://appshunter.io/ios/app/standard-form-extension/id1608530522)

**Features:** macOS Compatibility, Safari Extension

**In-app purchases:** none


### Slope Calc

[App page](https://appshunter.io/ios/app/slope-calc-step-by-step/id6447863172)

**In-app purchases:** none


## Frequently asked questions

### Is Standard Form Extension free?

Standard Form Extension is free to download, with no in-app purchases.

### Is Slope Calc free?

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

### Do Standard Form Extension or Slope Calc have ads?

Neither Standard Form Extension nor Slope Calc 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.*