# Stair Calculator vs Onsite Calculator

The clearest difference is in-app purchases: Onsite Calculator at none against Stair Calculator's 2. Onsite Calculator also leads on iOS requirement (13.0 vs 15.0). Stair Calculator's advantage is device support. On price there is nothing between them.

Both are free to download. Stair Calculator sells 2 in-app purchases, starting at $9.99 per year. Onsite Calculator asks for nothing beyond the download.

## The numbers

| Metric | Stair Calculator | Onsite Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (740 ratings)](https://appshunter.io/ios/app/stair-calculator-construction/id1493037366/reviews)** | — |
| Number of ratings | **740** | — |
| Positive reviews | 21.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 1 MB | 6 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [Cristony Bruno Tomporoski da Silva](https://appshunter.io/developer/1873600486) |

## What reviewers say

### Stair Calculator

[App page](https://appshunter.io/ios/app/stair-calculator-construction/id1493037366)

This app calculates essential parameters for stair construction, offering flexibility in input and providing multiple step set options. It supports various units and allows results to be easily copied.

**Highlights:** Calculate stair construction parameters, Flexible input for Run or Total Run, Determine largest and smallest step sets, Support for various units, Copy results to clipboard

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Premium Package | $9.99 | per year |
| Unlock all features | $5.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Helpful information
- 🚀 Provides useful calculations

**What reviewers complain about**

- 🐛 Doesn't work as expected
- 🔒 No way to cancel subscription
- 🔒 Difficult to cancel trial
- 🤬 Obnoxious ads
- 🤬 Misleading as a learning tool

**Reported bugs**

- Subscription numbers don't add up
- Doesn't provide promised features after purchase

**Requested features**

- Option to uninstall app
- Ability to calculate run based on rise and landing space
- Provide more detailed diagrams and visuals


### Onsite Calculator

[App page](https://appshunter.io/ios/app/onsite-calculator/id6758554794)

**In-app purchases:** none


## Frequently asked questions

### Is Stair Calculator free?

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

### Is Onsite Calculator free?

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

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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.*