StairPlan is a stair geometry and code-compliance calculator for contractors and DIY builders on iOS.
The App DNA
What makes this app unique?
It replaces manual framing square calculations and complex code-book lookups with a digital, offline-capable workflow that reduces liability for builders.
For Professional carpenters, deck builders, and renovation contractors requiring code-compliant stair calculations and CAD-ready exports.
What does it look like?
Key features
Uses LiDAR for 1 cm accuracy in rise measurement.
Real-time validation against US IRC, IBC, OSHA, ADA, and international codes.
Generates PDF, DXF, SVG, and CSV cut lists for CAD and spreadsheets.
How much does it cost?
Subscription-first model with a high-value lifetime option, designed to capture both transient DIY users and professional contractors.
Velocity
Steady developmentnew contentUX improvementsShow more...
StairPlan maintains a steady development cadence, shipping two updates within the last 30 days. The latest release focuses on functional expansion, specifically adding support for split-level and multi-flight layouts alongside refined geometric calculations. Development remains focused on core utility and precision, with the developer explicitly noting an offline-first, privacy-focused architecture. The current pace suggests a stable, feature-driven release cycle.
Who built it?
ZHENGQIAO JIANG
7 apps tracked · Utilities
ReadAloud: Text to Speech
HexBit: Programmer Calculator
VocalShift: Voice Changer
TileCount: Tile Calculator
Photo Cleaner: Smart Swipe
Floor Calculator & CarpetUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for StairPlan: Stair Calculator
How's the Utilities market?
StairPlan occupies the professional utility segment of the construction tools category. The app maintains a steady release cadence with two updates in the last month, focusing on multi-floor and rough-opening precision to defend its position against general-purpose calculators.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for StairPlan: Stair Calculator
Where is it heading?
The construction-utility market is consolidating around tools that offer direct CAD integration and code-compliance validation. StairPlan is well-positioned to capture the professional segment, provided the update cadence keeps pace with regional building code changes.
- The latest release introduces multi-floor stair support, signaling active feature investment rather than maintenance-mode stagnation.
- The consistent two-release-per-month cadence ensures the code-compliance engine remains accurate, which is essential for retaining professional trust.
The SWOT
- Code compliance engine reduces professional liability
- Multi-format CAD exports integrate into professional workflows
- Offline-first architecture ensures utility on remote sites
- Automated stringer-layout overlays via AR
- Localized marketing for international code modules
Next best moves
Invest in AR stringer-layout overlays because it is the top-requested workflow enhancement → increase professional retention
+ 2 more prioritized movesThe counter-intuitive read
The subscription-only model is an advantage, not a weakness…
Read the full takeBottom line
StairPlan secures its position by embedding professional liability protection into the calculation workflow, which justifies the premium subscription cost for contractors. Maintaining this authority requires a rigorous update cadence to match evolving regional building codes, ensuring the tool remains the primary source of truth for site-level decisions.
Unlock 2 critical frictions, 2 market threats, 2 more prioritized moves and the analyst’s take.
Access the full report for freeFAQ
Is StairPlan suitable for professional contractors?
Does StairPlan require an internet connection?
What file formats can StairPlan export?
How does StairPlan compare to free stair calculators?
Sources
- [1] App Store, source
Report last updated