StairBuilderPro vs RoofCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StairBuilderPro
This iPad app simplifies stair stringer layout by calculating and plotting all necessary points on your board. It eliminates the need for specialized tools and prior knowledge, guiding users through the process with visual aids. Works with both imperial and metric measurements.
- Graphical interface for dimension entry
- Automatic plotting of stringer points
- Step-by-step visual guidance
- Imperial and metric measurement support
- Eliminates need for framing square
- Connect-the-dots cutting method
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From the creator of BalusterPro comes StairBuilderPro, a unique stair stringer layout tool designed specifically for the iPad. Simply enter your dimensions on the graphical interface and StairBuilderPro will plot all of the points on your board needed for a perfectly cut stringer. For advanced users, a single tap will plot all of the points at once or with the step through method, the app will visually walk you through the entire process one step at a time. All there is left to do is connect the dots and cut along these lines. It is that simple. Unlike all the other stair stringer layout guides, there is no need for a framing square, stair gauges or any previous knowledge for building stairs. The only tools you will need are a pencil, tape measure, straight edge and a saw! Works in both imperial and metric measurements. Check out the video demo at my website to see StairBuilderPro in action. Check out my other construction related apps....BalusterPro for a baluster spacing calculator & TilePro for a simple tile layout tool.
RoofCalc
This app assists roofing and framing carpenters with complex calculations for various roof types and stud walls. It offers metric and imperial unit conversion, a standard calculator, and the ability to share results via email or message. Optimized for iPhones and iPads, it's designed for ease of use by construction professionals.
- Hipped, gabled, and single-pitch roof calculations
- Stud wall calculations and estimating
- Metric and imperial unit conversion
- Standard calculator and quick converter
- Print, email, or message results
- Default value settings
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Roofing and Framing carpentry Calculator. Developed by carpenters and used by professional carpenters, contractors, builders and other construction professionals around the world. An indispensable roof tool for roofing construction. Easy to use - no complex steps to remember. Set default values for the most commonly used values. Metric and imperial at the touch of a button. CALCULATIONS INCLUDE : Hipped, gabled and single-pitch roofs: ◆ Lengths ; ◆ Angles; ◆ Heights; ◆ layout; ◆ Birdsmouth ◆ Pitch (various); ◆ Roof Pitch Factor; ◆ Adjust calculations for a plate higher on one side; ◆ Roof surfaces ; ◆ Stud Wall Calculations & Estimating ; ◆ Other timber layouts ; ALSO:- ◆Easy-to-use standard calculator - common functions for quick calculation. ◆ Quick converter - lengths, areas, volumes: Metric and US/Imperial ◆ Print, email or message lists and even take notes on the first ; Optimised for all iPhones and iPads in portrait mode. INFOGUIDE : Infoguide is part of a small construction company based in Western Australia and this app was created by a former carpenter for our team of carpenters. We use it and believe it will be as useful to other carpenters as it has been to us. Terms of Service: http://www.apple.com/legal/itunes/appstore/dev/stdeula
Screenshots
Verdict
The clearest difference is price: RoofCalc at Free against StairBuilderPro's $4.99. RoofCalc also leads on rating (3.8 vs 3.2) and update cadence (monthly vs every 8 months). StairBuilderPro's advantage is review sentiment (56% vs 20%) and in-app purchases (none vs 2). On ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
RoofCalc is free to download; StairBuilderPro costs $4.99 up front. RoofCalc sells 2 in-app purchases, starting at $1.99 per month. StairBuilderPro asks for nothing beyond the download.
RoofCalc holds the better App Store score, 3.8 against 3.2. Both are backed by a comparable volume of ratings — 6 and 12 respectively. Written reviews complicate that: 56% of StairBuilderPro's written reviews are positive against 20% of RoofCalc's, so the app with the better star average is not the one people write more warmly about.
StairBuilderPro ships an update every 8 months, RoofCalc monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | StairBuilderPro | RoofCalc |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 3.2 (6 ratings) | 3.8 (12 ratings) — better |
| Positive reviews | 55.6% of reviews — better | 20.0% of reviews |
| Number of ratings | 6 | 12 — better |
| Update frequency | Every 8 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 8.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 12 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Gabrio | Infoguide Pty Ltd |
Customer experience
StairBuilderPro
RoofCalc
In-app purchases
StairBuilderPro
No in-app purchases
RoofCalc
- Monthly$1.991 Month
- Annual$12.991 Year
Questions
Is StairBuilderPro free?
Is RoofCalc free?
Which has better reviews, StairBuilderPro or RoofCalc?
Do StairBuilderPro or RoofCalc have ads?
Which is updated more often, StairBuilderPro or RoofCalc?
Other comparisons
