# Stair Stringer vs Stair Calculator 2

The clearest difference is update cadence: Stair Stringer at every 5 weeks against Stair Calculator 2's every 26 months. Stair Stringer also leads on price ($1.99 vs $6.99) and iOS requirement (14.0 vs 17.5). On ads, in-app purchases and device support there is nothing between them.

Stair Stringer costs $1.99 and Stair Calculator 2 $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stair Stringer ships an update every 5 weeks, Stair Calculator 2 every 26 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Stair Stringer | Stair Calculator 2 |
| --- | --- | --- |
| Price | **$1.99** | $6.99 |
| Rating | **[4.7 (87 ratings)](https://appshunter.io/ios/app/stair-stringer/id1550828339/reviews)** | — |
| Number of ratings | **87** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 26 months |
| Monetization | Paid | — |
| Size | 2 MB | 15 MB |
| Requires iOS | **14.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [H3Apps LLC](https://appshunter.io/developer/598620927) | [Snappy Appz Inc.](https://appshunter.io/developer/375591377) |

## What reviewers say

### Stair Stringer

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

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


### Stair Calculator 2

[App page](https://appshunter.io/ios/app/stair-calculator-2/id1619604719)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stair Stringer free?

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

### Is Stair Calculator 2 free?

Stair Calculator 2 costs $6.99, with no in-app purchases.

### Do Stair Stringer or Stair Calculator 2 have ads?

Neither Stair Stringer nor Stair Calculator 2 shows ads.

### Which is updated more often, Stair Stringer or Stair Calculator 2?

Stair Stringer ships an update every 5 weeks, and Stair Calculator 2 every 26 months. Most recently, Stair Stringer was updated on November 3, 2026 and Stair Calculator 2 on November 3, 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.*