Comparison

BuildersCalcsPro vs Roof Guide

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

BuildersCalcsPro

This app simplifies complex construction calculations for various building trades and DIY projects. It offers tools for concrete, foundations, brickwork, roofing, and more, with an intuitive interface. Includes a VAT calculator and a brain-resting game.

Highlights
  • Concrete quantity calculations
  • Foundation and floor slab calculations
  • Brick, block, and mortar calculations
  • Roofing and wall tile quantity estimation
  • Paint and heat loss calculations
  • Thermal property calculators
  • VAT calculator
Features
Read full description

BuilderscalcsPro is possibly the only IPhone App you will need for all your calculations in Most Building Trades and DIY projects. It combines all your needs into 1 App and there's no need to be a Scientist or expert Mathematician to use it because of the ease of use and simple to understand Interface. There's also a brilliant VAT calculator and even a game you can play to rest your brain. Main Programs Include. CONCRETE Quantities FLOOR SLAB *Aggregate *Sand *Cement FOUNDATIONS *Aggregate *Sand *Cement RENDERING & PLASTERING *Mortar *Sand *Cement *Plaster BRICK & BLOCKWORK *Quantities of Brick / Block *Amounts of Mortar *Sand *Cement FLOOR JOISTS *Joist Sizes *Stress Graded Timbers *Various Dead Loads ROOFING Quantities *Slates *Tiles *Battens *Felt *Nails WALL TILES *Tile Quantities *Adhesive amounts PAINT Quantities *Wall & Ceilings HEATLOSS of ROOM or BUILDING *Output in Watts *Corrected output for Radiator Selection THERMAL Calculators *Floors *Walls *Framing VAT Calculator *Multiple Edit INFO *General Conversion Formulae

About

Roof Guide

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
Read full description

Roofing and framing carpentry calculator, decking, stairs, concrete, stud wall calculators. In addition to the roof calculators the decking / flooring, stud wall and concrete calculators also estimate quantities and costs. US or metric measurements. Developed by a carpenter and builder, used by carpenters, roofers, contractors, builders and construction pros in over 40 countries around the world. Roof Guide (previously Roofers Guide) is not a 'How to App’ - you know how! It is designed to save you the time and effort required for roof, framing, deck, stairs & other building / construction calculations Accurate, reliable and easy to use, it is an indispensable tool for the construction pro. Metric or Imperial (feet, inches and fractions of an inch (or decimal) Print, email or reports. Never forget your span or rafter tables, red roofing book and other standalone construction calculators again! CALCULATIONS INCLUDE: ROOF FRAMING:- - Rafter,Hip/Valley Lengths - Multiple cut angles, including for compound saw - Template (adjustable) sizes for the same cuts - where used - Setout of Creepers/Jack Rafters(US), ridge and wall - Roof Pitch Factor degrees, inches (US), D:M:S - Rise : Run ratio - Birdsmouth calculations - Drop or Chamfer Hip adjustments - Multiple heights measures, including:- top/bottom of ridge, roof centre, - Hypotenuse calculations eg: Calculate Pitch from ridge rise - Adjust pitching plate heights where one wall is higher eg Bulkheads - Ridge length, area, rake factors - Print, email or message reports DECKING & FLOORING SETOUT, MATERIAL ESTIMATING and COSTING:- - Options for Insets, single or double bearers - Set Spacing type to maximum, fixed or equal - Set pricing for materials / labour to calculate cost and cost/area TIMBER SETOUT:- - Set Spacing type to maximum, fixed or equal - Insets at start and end. STUD WALLS SETOUT, MATERIAL ESTIMATING and COSTING:- - Raked or flat walls - Sizing, Quantity & Cost Estimates - Timber (studs, noggins, plates) & Sheeting - Comprehensive setout lists - bottom, top - Align sheets on width, length or no sheets STAIR FRAMING (currently for single stair runs):- Permits Multiple restrictions on risers, treads, inclines and also allows application of 2R+G (2R+TD in US) in jurisdictions required - to meet standards. Other than StairCalc (which is our Stair only app) we do not know of an app that does this simultaneously. Also calculations allow for situations where the overall stair rise and run are fixed or variable allowing maximum flexibility. - Number and size of step risers, treads, step inclines, - Step incline (Also changeable), - Stairwell opening, - Stringer Lengths CONCRETE CALCULATOR / ESTIMATOR:- - Calculate quantities for slabs, footings, round and rectangular/square holes. - Estimates total volume and cost allowing for waste. CONVERTER:- - Convert Lengths, Area, Volume: Metric and US/Imperial. - Work in Decimal units or Yds/Ft/In/Fraction format to Metric, decimal US. EASY TO USE GENERAL CALCULATOR WITH TAPE: - Calculate (add, subtract etc) directly in feet / inches / fractions or decimals. - Common functions for quick calculation EXTENSIVE HELP: Extensive help - Tap twice on most buttons for more info. Optimised for all iPhones and iPads in portrait mode. INFOGUIDE: Infoguide is part of a small building firm based in Western Australia. This app was created by a former Roof Framing Carpenter for our team of carpenters. We use it and believe it will be as helpful to other carpenters as it was for us. Terms of Service: http://www.apple.com/legal/itunes/appstore/dev/stdeula

Screenshots

BuildersCalcsPro4 screens
Roof Guide4 screens

Verdict

The call

The clearest difference is price: Roof Guide at Free against BuildersCalcsPro's $2.99. Roof Guide also leads on rating (4.0 vs 1.4) and update cadence (every 2 weeks vs every 10 months). BuildersCalcsPro's advantage is in-app purchases (none vs 4) and iOS requirement (17.6 vs 26.0). On 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

CostPrice · In-app purchases · Ads · Monetization

Roof Guide is free to download; BuildersCalcsPro costs $2.99 up front. Roof Guide sells 4 in-app purchases, starting at $1.99 per month. BuildersCalcsPro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Roof Guide holds the better App Store score, 4.0 against 1.4. Both are backed by a comparable volume of ratings — 5 and 19 respectively. Written reviews point the same way: 38% of BuildersCalcsPro's written reviews are positive against 64% of Roof Guide's.

UpkeepUpdate frequency

BuildersCalcsPro ships an update every 10 months, Roof Guide every 2 weeks. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 2 level
BuildersCalcsPro versus Roof Guide: the parameters behind the verdict, then further details
ParameterBuildersCalcsProRoof Guide
Price$2.99Free — better
Rating1.4 (5 ratings)4.0 (19 ratings) — better
Positive reviews37.5% of reviews63.6% of reviews — better
Number of ratings519 — better
Update frequencyEvery 10 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better26.0
Further details — not scored
Size8 MB31 MB
Age rating4+4+
DeveloperRobert ThompsonInfoguide Pty Ltd

Customer experience

BuildersCalcsPro

All ratings5 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews8 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

Roof Guide

All ratings19 ratings
Positive73.7%
Neutral0.0%
Negative26.3%
Written reviews11 reviews
Positive63.6%
Neutral0.0%
Negative36.4%

In-app purchases

None

BuildersCalcsPro

No in-app purchases

4 purchases

Roof Guide

Subscriptions3
  • Monthly$1.991 Month
  • 6 Months$7.996 Months
  • Annual$12.991 Year
One-time1
  • Lifetime License$29.99

Questions

Is BuildersCalcsPro free?
BuildersCalcsPro costs $2.99, with no in-app purchases.
Is Roof Guide free?
Roof Guide is free to download, with in-app purchases available.
Which has better reviews, BuildersCalcsPro or Roof Guide?
Roof Guide is rated higher. BuildersCalcsPro averages 1.4 out of 5 from 5 ratings, while Roof Guide averages 4.0 from 19 ratings.
Do BuildersCalcsPro or Roof Guide have ads?
Neither BuildersCalcsPro nor Roof Guide shows ads.
Which is updated more often, BuildersCalcsPro or Roof Guide?
BuildersCalcsPro ships an update every 10 months, and Roof Guide every 2 weeks. Most recently, BuildersCalcsPro was updated on October 7, 2026 and Roof Guide on October 24, 2026.

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