# Stair Calculator: Stringer — Riser, Tread & IRC Code Check

> Riser, Tread & IRC Code Check (iPhone/iPad app by Shanghai Sheyuan Network Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/stair-calculator-stringer/id6761447787 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858)
- Category: Utilities, Productivity
- Price: $4.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-04-02
- Data updated: 2026-09-06
- User reviews in markdown: https://appshunter.io/ios/app/stair-calculator-stringer/id6761447787/reviews.md

## What is Stair Calculator?

Building stairs and need code-compliant riser and tread dimensions? Get stringer layout with automatic IRC building code validation before you make a single cut.

Stair Calculator: Stringer computes riser height, tread depth, stringer length, stair angle, and validates against IRC R311.7 residential stair requirements. Enter your total rise and available run to get your stringer dimensions with riser and tread checked against IRC limits.

WHAT YOU GET:
- Individual riser height and tread depth
- Number of risers and treads
- Stringer hypotenuse length
- Stair angle from horizontal

IRC R311.7 CODE CHECKS:
- Maximum riser height 7-3/4 inches (196mm)
- Minimum tread depth 10 inches (254mm)
- Pass/fail status for each requirement

ADJUSTABLE INPUTS:
- Total rise (floor to floor)
- Total run (horizontal distance)
- Number of steps with stepper control
- Instant recalculation on every change

WHO NEEDS THIS:
- Carpenters framing new staircases
- Deck builders planning exterior stairs
- General contractors verifying subcontractor work
- Building inspectors checking compliance

Works completely offline. No account required. Get your stair layout in seconds before you pick up the saw.


## Version history (last 4 releases)

### 1.0.3 — 2026-09-03

Updated app name and metadata.

### 1.0.2 — 2026-06-28

Added a More Pro Tools section to discover related field calculators.

### 1.0.1 — 2026-04-14

Bug fixes and performance improvements.

### 1.0 — 2026-04-02

No release notes.

## More apps by Shanghai Sheyuan Network Technology Co., Ltd.

- [木不 - 解忧伴侣](https://appshunter.io/ios/app/id1597427913)
- [上岸香 - 考研考公专注助手](https://appshunter.io/ios/app/id6758300319)
- [Stamping Tonnage Calculator](https://appshunter.io/ios/app/stamping-tonnage-calculator/id6760528007)
- [CNC Thread Drill Hole Calc](https://appshunter.io/ios/app/cnc-thread-drill-hole-calc/id6760606318)
- [Orifice Jet Flow](https://appshunter.io/ios/app/orifice-jet-flow/id6760607248)
- [Concrete Block Wall Est](https://appshunter.io/ios/app/concrete-block-wall-est/id6760607814)

All apps by Shanghai Sheyuan Network Technology Co., Ltd.: https://appshunter.io/developer/1560626858

## Related topics

[stair calculator with stringer details](https://appshunter.io/ios/topics/stair-calculator-with-stringer-details) · [stair stringer calculator](https://appshunter.io/ios/topics/stair-stringer-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*