# StairBuilderPro vs Roof Guide

The clearest difference is price: Roof Guide at Free against StairBuilderPro's $4.99. Roof Guide also leads on rating (4.0 vs 3.2) and update cadence (every 2 weeks vs every 8 months). StairBuilderPro's advantage is in-app purchases (none vs 4) and iOS requirement (8.0 vs 26.0). On ads and device support there is nothing between them.

Roof Guide is free to download; StairBuilderPro costs $4.99 up front. Roof Guide sells 4 in-app purchases, starting at $1.99 per month. StairBuilderPro asks for nothing beyond the download.

Roof Guide holds the better App Store score, 4.0 against 3.2. Both are backed by a comparable volume of ratings — 6 and 19 respectively. Written reviews point the same way: 56% of StairBuilderPro's written reviews are positive against 64% of Roof Guide's.

StairBuilderPro ships an update every 8 months, Roof Guide every 2 weeks. Both last shipped on November 1, 2026.

## The numbers

| Metric | StairBuilderPro | Roof Guide |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.2 (6 ratings)](https://appshunter.io/ios/app/stairbuilderpro/id576147785/reviews) | **[4.0 (19 ratings)](https://appshunter.io/ios/app/roof-guide-carpentry-calc/id920670842/reviews)** |
| Number of ratings | 6 | **19** |
| Positive reviews | 55.6% of reviews | **63.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 12 MB | 31 MB |
| Requires iOS | **8.0** | 26.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Greg Gabrio](https://appshunter.io/developer/304928742) | [Infoguide Pty Ltd](https://appshunter.io/developer/920670841) |

## What reviewers say

### StairBuilderPro

[App page](https://appshunter.io/ios/app/stairbuilderpro/id576147785)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Roof Guide

[App page](https://appshunter.io/ios/app/roof-guide-carpentry-calc/id920670842)

This app provides specialized calculators for roofing, framing, decking, stairs, and concrete projects. It helps construction professionals estimate quantities, costs, and set out materials accurately using US or metric measurements.

**Highlights:** Roof framing calculations, Decking and flooring estimator, Stud wall setout and costing, Stair framing calculations, Concrete volume and cost estimator, Metric and imperial unit conversion

**Features:** Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| 6 Months | $7.99 | per 6 months |
| Annual | $12.99 | per year |
| Lifetime License | $29.99 | one-time |


## Frequently asked questions

### Is StairBuilderPro free?

StairBuilderPro costs $4.99, with no in-app purchases.

### Is Roof Guide free?

Roof Guide is free to download, with in-app purchases available.

### Which has better reviews, StairBuilderPro or Roof Guide?

Roof Guide is rated higher. StairBuilderPro averages 3.2 out of 5 from 6 ratings, while Roof Guide averages 4.0 from 19 ratings.

### Do StairBuilderPro or Roof Guide have ads?

Neither StairBuilderPro nor Roof Guide shows ads.

### Which is updated more often, StairBuilderPro or Roof Guide?

StairBuilderPro ships an update every 8 months, and Roof Guide every 2 weeks. Most recently, StairBuilderPro was updated on November 1, 2026 and Roof Guide on November 1, 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.*