# ProGraph Calculator vs Slope Calc

The clearest difference is update cadence: ProGraph Calculator at every 3 months against Slope Calc's every 34 months. 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.

ProGraph Calculator ships an update every 3 months, Slope Calc every 34 months. The most recent releases landed on September 17, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | ProGraph Calculator | Slope Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 34 months |
| Size | 1 MB | 19 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Pingleton](https://appshunter.io/developer/1584719976) | [Abdul Rehman](https://appshunter.io/developer/1606519308) |

## What reviewers say

### ProGraph Calculator

[App page](https://appshunter.io/ios/app/prograph-calculator/id1629338359)

**Features:** macOS Compatibility

**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 ProGraph Calculator free?

ProGraph Calculator 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 ProGraph Calculator or Slope Calc have ads?

Neither ProGraph Calculator nor Slope Calc shows ads.

### Which is updated more often, ProGraph Calculator or Slope Calc?

ProGraph Calculator ships an update every 3 months, and Slope Calc every 34 months. Most recently, ProGraph Calculator was updated on September 17, 2026 and Slope Calc on June 5, 2026.

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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.*