# Stair Help vs Construction Calculator

The clearest difference is price: Construction Calculator at Free against Stair Help's $1.99. Construction Calculator also leads on update cadence (every 6 days vs every 8 months) and review sentiment (54% vs 25%). Stair Help's advantage is in-app purchases (none vs 9) and iOS requirement (10.0 vs 16.4). On rating, ratings volume, ads and device support there is nothing between them.

Construction Calculator is free to download; Stair Help costs $1.99 up front. Construction Calculator sells 8 in-app purchases, starting at $4.99 per month. Stair Help asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Stair Help against 4.7 for Construction Calculator. Both are backed by a comparable volume of ratings — 239 and 667 respectively. Written reviews are what separate them: 25% of Stair Help's written reviews are positive against 54% of Construction Calculator's.

Stair Help ships an update every 8 months, Construction Calculator every 6 days. The most recent releases landed on October 19, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Stair Help | Construction Calculator |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.6 (239 ratings)](https://appshunter.io/ios/app/stair-help/id1029967951/reviews) | **[4.7 (667 ratings)](https://appshunter.io/ios/app/construction-calculator/id1092417398/reviews)** |
| Number of ratings | 239 | **667** |
| Positive reviews | 25.0% of reviews | **53.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 49 MB |
| Requires iOS | **10.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Armchair Engineering](https://appshunter.io/developer/398901339) | [xNeat.com](https://appshunter.io/developer/327498295) |

## What reviewers say

### Stair Help

[App page](https://appshunter.io/ios/app/stair-help/id1029967951)

This application simplifies staircase construction by accurately calculating essential measurements like riser, going, and stringer lengths. It offers customizable units, riser height, and precision settings for fractions and decimal places.

**Highlights:** Calculate riser, going, stringer, and base lengths, Set preferred units (mm, cm, inches), Adjustable max riser height, Set preferred decimal places, Set fraction of an inch precision

**Features:** Vision Pro support

**In-app purchases:** none


### Construction Calculator

[App page](https://appshunter.io/ios/app/construction-calculator/id1092417398)

This app is a powerful calculator designed for construction and woodworking professionals, as well as students. It simplifies calculations involving feet, inches, and fractions, offering conversions between various measurement units and displaying equations and results simultaneously. Advanced features are available through optional in-app purchases.

**Highlights:** Decimal to fraction converter, Fraction to decimal conversion, Simultaneous equation and result display, Advanced editing capabilities, Today Screen integration, Support for multiple dimensional formats

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Construction Calculator | $4.99 | per month |
| Construction Calculator | $39.99 | per year |
| Themes | $1.99 | one-time |
| Calculator Plus | $3.99 | one-time |
| Rafter | $4.99 | one-time |
| Stair Calculator | $4.99 | one-time |
| Fraction Calculator | $9.99 | one-time |
| Construction Calculator | $14.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick and accurate calculations
- 💡 Helpful for construction work
- 🎨 Customizable colors

**What reviewers complain about**

- 💰 Subscription model is too expensive
- 🔒 Paywall locks out useful features
- 🔄 Forced updates break existing functionality
- 🤯 Confusing and difficult to navigate

**Reported bugs**

- Calculation errors and incorrect results
- Freezing and crashing on certain devices
- Compatibility issues with newer OS versions

**Requested features**

- Bring back fraction display in results
- Allow offline use without subscription
- Add more construction-specific tools
- Improve user interface and usability


## Frequently asked questions

### Is Stair Help free?

Stair Help costs $1.99, with no in-app purchases.

### Is Construction Calculator free?

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

### Which has better reviews, Stair Help or Construction Calculator?

Construction Calculator is rated higher. Stair Help averages 4.6 out of 5 from 239 ratings, while Construction Calculator averages 4.7 from 667 ratings.

### Do Stair Help or Construction Calculator have ads?

Neither Stair Help nor Construction Calculator shows ads.

### Which is updated more often, Stair Help or Construction Calculator?

Stair Help ships an update every 8 months, and Construction Calculator every 6 days. Most recently, Stair Help was updated on October 19, 2026 and Construction Calculator on October 21, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*