# Stair Calculator . vs StringerPro

The clearest difference is ads: StringerPro at none against Stair Calculator .'s shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Stair Calculator . sells 3 in-app purchases, starting at $1.49 per 7 days and StringerPro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Stair Calculator . | StringerPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/stair-calculator/id6760628453/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 16 MB | 6 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Asaru Labs LTD](https://appshunter.io/developer/1810982779) | [ClearStack Apps](https://appshunter.io/developer/6798305739) |

## What reviewers say

### Stair Calculator .

[App page](https://appshunter.io/ios/app/stair-calculator/id6760628453)

This app assists construction professionals and DIYers in accurately calculating stair dimensions. It provides instant results for step count, rise, run, angle, and stringer length, with visual previews to aid in planning and building.

**Highlights:** Stair step calculator, Rise and run calculator, Stringer length calculator, Visual stair diagram, 3D stair previews, Metric and imperial support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Version | $1.49 | per 7 days |
| Premium Version | $3.99 | per month |
| Premium Version | $19.99 | per year |


### StringerPro

[App page](https://appshunter.io/ios/app/stringerpro-stair-calculator/id6799538997)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StringerPro Premium | $5.99 | one-time |


## Frequently asked questions

### Is Stair Calculator . free?

Stair Calculator . is free to download, with in-app purchases available.

### Is StringerPro free?

StringerPro is free to download, with in-app purchases available.

### Do Stair Calculator . or StringerPro have ads?

Stair Calculator . shows ads; StringerPro does not.

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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.*