Comfort scoring, not just geometry
Each result is checked against riser height, tread depth, slope angle, and Blondel balance so you can spot a usable option instead of just a mathematically possible one.
Comfort-first stair calculations
Check the dimensions before the build gets expensive.
Stair Calculator helps you size a stair in millimeters, compare nearby variants, and quickly see whether a layout stays within the comfort targets most builders actually care about.
- 4 layouts
- Straight, quarter turn with landing, winder quarter turn, and spiral
- Local-only history
- Your saved calculations stay on the device and can be cleared anytime
- Instant variants
- Compare nearby step counts without re-entering dimensions
What it does
Fast enough for the first idea, strict enough for the second look.
The app is designed to answer the questions that come up before a stair is drawn in detail: how many risers make sense, whether the tread stays comfortable, and which compromise is the least painful when the footprint is tight.
Multiple stair families
Switch between straight stairs, quarter turns with landing, balanced winders, and spiral stairs without leaving the same calculation flow.
Nearby variants ranked automatically
The app surfaces close alternatives with different step counts so you can compare comfort, run, and overall balance before committing.
History stays on the phone
Saved calculations are stored locally on the device for quick reuse. They are not sent to a remote account system, analytics backend, or cloud sync service.
Supported layouts
Four stair types, one calculation workflow.
Straight
Enter total rise and available run to size the simplest stair footprint quickly.
Quarter turn with landing
Define both flights and the turning width to check an L-shaped stair with a landing.
Winder quarter turn
Balance the turning steps while keeping the two flights and turning side in view.
Spiral
Calculate outer diameter, inner void, walking line, and step rotation from the same screen.
Why local matters
Useful on site, without turning your measurements into an account problem.
Stair Calculator keeps saved calculations on the phone itself. That makes the app quick to reopen, easy to reuse, and simpler to trust when you are working with measurements that do not need to leave the device.
- No sign-in flow
- No advertising SDK
- No analytics profile tied to your calculations
- Clear the saved history directly inside the app
Current release focus
The live Android build focuses on input speed, comfort checks, variant comparison, and reliable history restore. Visualization work remains under active development.
FAQ
Short answers for the practical questions.
Is this already on the Play Store?
The Android release is being prepared for Play Store publication. The app can already be installed directly for testing and early access.
Does the app upload my dimensions?
No. The current app keeps saved calculation history on the device itself. The privacy policy explains the exact storage behavior in more detail.
Who is it for?
Renovators, builders, makers, and anyone who needs a fast dimensional check before moving into a more detailed stair drawing or fabrication workflow.
Can I report a bug or request a feature?
Yes. You can email robin@snyders.xyz or follow the public project repository on GitHub.