# Stair Calculator Plus vs Stair Stringer

The clearest difference is review sentiment: Stair Stringer at 67% against Stair Calculator Plus's 0%. Stair Stringer also leads on rating (4.7 vs 3.0) and update cadence (every 5 weeks vs every 43 months). Stair Calculator Plus's advantage is iOS requirement (12 vs 14.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

Stair Calculator Plus costs $2.99 and Stair Stringer $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stair Stringer holds the better App Store score, 4.7 against 3.0. Both are backed by a comparable volume of ratings — 18 and 86 respectively. Written reviews point the same way: 0% of Stair Calculator Plus's written reviews are positive against 67% of Stair Stringer's.

Stair Calculator Plus ships an update every 43 months, Stair Stringer every 5 weeks. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Stair Calculator Plus | Stair Stringer |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | [3.0 (18 ratings)](https://appshunter.io/ios/app/stair-calculator-plus/id1442478865/reviews) | **[4.7 (86 ratings)](https://appshunter.io/ios/app/stair-stringer/id1550828339/reviews)** |
| Number of ratings | 18 | **86** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 43 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#126** |
| Size | 8 MB | 2 MB |
| Requires iOS | **12** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [H3 Apps, LLC](https://appshunter.io/developer/598620927) |

## What reviewers say

### Stair Calculator Plus

[App page](https://appshunter.io/ios/app/stair-calculator-plus/id1442478865)

This utility app assists with stair design by instantly calculating crucial measurements like rise, run, and rail angle. It supports high precision with up to 16 decimal places and offers flexibility with various input units. Results can be easily copied to other applications for seamless workflow integration.

**Highlights:** Instant stair rise and run calculation, Calculate stair rail angle, Determine stringer length, Support for 16 decimal places, Multiple input units, Copy results to other apps

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

**In-app purchases:** none


### Stair Stringer

[App page](https://appshunter.io/ios/app/stair-stringer/id1550828339)

**Currently charting:** #126 Top Paid · Utilities (US App Store)

This app calculates all necessary measurements for building a stair stringer, including risers, run, angle, and length. Easily adjust parameters and switch between Imperial and Metric units. Share your calculated results via email or text.

**Highlights:** Calculates stair risers and run, Determines stair angle and stringer length, Calculates step height and tread depth, Determines the number of steps, Adjustable parameters, Imperial or Metric units, Share results via email/text

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

**In-app purchases:** none


## Frequently asked questions

### Is Stair Calculator Plus free?

Stair Calculator Plus costs $2.99, with no in-app purchases.

### Is Stair Stringer free?

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

### Which has better reviews, Stair Calculator Plus or Stair Stringer?

Stair Stringer is rated higher. Stair Calculator Plus averages 3.0 out of 5 from 18 ratings, while Stair Stringer averages 4.7 from 86 ratings.

### Do Stair Calculator Plus or Stair Stringer have ads?

Neither Stair Calculator Plus nor Stair Stringer shows ads.

### Which is updated more often, Stair Calculator Plus or Stair Stringer?

Stair Calculator Plus ships an update every 43 months, and Stair Stringer every 5 weeks. Most recently, Stair Calculator Plus was updated on September 18, 2026 and Stair Stringer on September 23, 2026.

---

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