# Stair Calculator vs AllTorqueHD

The clearest difference is in-app purchases: AllTorqueHD at none against Stair Calculator's 2. AllTorqueHD also leads on review sentiment (50% vs 21%) and update cadence (monthly vs every 3 months). Stair Calculator's advantage is ratings volume (740 vs 4). On price, rating, ads and device support there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.1 for Stair Calculator against 4.3 for AllTorqueHD. That said, the two scores are not equally well evidenced: Stair Calculator has 740 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 21% of Stair Calculator's written reviews are positive against 50% of AllTorqueHD's.

Stair Calculator ships an update every 3 months, AllTorqueHD monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Stair Calculator | AllTorqueHD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (740 ratings)](https://appshunter.io/ios/app/stair-calculator-construction/id1493037366/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/alltorquehd/id1547325073/reviews)** |
| Number of ratings | **740** | 4 |
| Positive reviews | 21.4% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 1 MB | 88 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) | [Allweigh Scale Systems Inc.](https://appshunter.io/developer/1502182301) |

## 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


### AllTorqueHD

[App page](https://appshunter.io/ios/app/alltorquehd/id1547325073)

This utility app connects to sensors for horizontal drilling and screw piling. It helps manage job data, generate reports, and store sensor information locally and in the cloud.

**Highlights:** Connects to AllTorque sensors, Manages horizontal drilling jobs, Manages screw piling jobs, Generates job reports, Stores sensor data locally, Stores sensor data in the cloud

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

**In-app purchases:** none


## Frequently asked questions

### Is Stair Calculator free?

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

### Is AllTorqueHD free?

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

### Which has better reviews, Stair Calculator or AllTorqueHD?

AllTorqueHD is rated higher. Stair Calculator averages 4.1 out of 5 from 740 ratings, while AllTorqueHD averages 4.3 from 4 ratings.

### Do Stair Calculator or AllTorqueHD have ads?

Neither Stair Calculator nor AllTorqueHD shows ads.

### Which is updated more often, Stair Calculator or AllTorqueHD?

Stair Calculator ships an update every 3 months, and AllTorqueHD monthly. Most recently, Stair Calculator was updated on October 24, 2026 and AllTorqueHD on October 24, 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.*