Comparison

Carpentry Formulator vs iRoofing Phone App

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

Head to head
About

Carpentry Formulator

This app provides over 150 formulas and dozens of conversions for carpenters and builders. It calculates loads on walls and headers, material quantities for projects, and dimensions for roofing and stairs. It also includes area and volume calculations for various shapes.

Highlights
  • Load calculations for walls and headers
  • Material quantity estimation (joists, studs, concrete)
  • Roofing and stair dimension calculations
  • Area and volume formulas for geometric shapes
  • Dozens of unit conversion tools
  • Shareable calculation results
Features
Read full description

CARPENTRY FORMULATOR contains over 150 formulas that are useful for carpenters and builders. This app calculates loads on walls and loads on headers.The app calculates space between balusters, wood needed for railings It calculates Hardwood Flooring, calculations on Board Feet and Lumber conversions. It calculates the number of Joists, Sheet Rock, Concrete and Asphalt needed. The program has special sections on Roofing and Stairs. The CARPENTRY FORMULATOR has various formulas to calculate area and volumes of differing shapes. The program also includes dozens of conversions; everything from square feet to square inches and square inches to feet of water. Every result in CARPENTRY FORMULATOR shared. In the coming months there will be updates to CARPENTRY FORMULATOR that will include additional formulas. If there are formulas you would like that are not yet included, just e-mail us and we will try to include it in our next update. LOAD ON WALLS *Load on One Story Building Truss Roof *Load on One Story Building with Attic Stick Built *Load on Two Story Building with Attic Stick Roof *Total Load on Beam *Weight Header Can Carry LUMBER CALCULATION *Cost of Hardwood Flooring *Calculating Board Feet *Lumber Conversions- Board and Linear Feet MATERIALS NEEDED *Number of Joist Required *Number of Studs Required *Sheet Rock Coverage *Asphalt Needed *Cubic Yard of Concrete Needed *Coverage from Concrete ROOFING *Shed roof *Gable roof *Hip roof on square building *Gable Roof Sheathing *Shed Roof Sheeting *Hip Roof Sheeting STAIRS *Number of risers *Unit risers *Unit run *Total run Area Formulas Include: SQUARES *Area *Perimeter *Length of the diagonal RECTANGLES *Area *Perimeter *Length of base *Height *Length of diagonal PYRAMIDS *Pyramid area *Pyramid v *Volume prism SPHERES *Area of surface *Sde of cube *Volume of sphere Cylinder: *Cylinder area *Cylinder length *Volume *Capacity *Area of Cylinder Base *Length of Cylinder CIRCLES *Circumference *Radius *Diameter of Circle *Area of circle *Arc length *Degrees of arcs *Radius of arc CONES *Lateral surface area *Total surface area Ellipse:Area Hexagon:Area Parallelogram Area 200 Conversion formulas

About

iRoofing Phone App

Instantly generate unlimited roof measurements from various image sources. Enhance customer trust and close more sales with digital presentations and organized project management tools. Streamline your roofing business operations with this comprehensive mobile solution.

Highlights
  • Unlimited roof measurements
  • Satellite, aerial, drone, and blueprint image support
  • Auto pitch detection
  • Customizable digital pitchbook
  • Customer and task management
  • Digital manufacturer catalogs
Features
Read full description

Create instant, unlimited roof measurements. Build trust with property owners. Bid more jobs & close more sales with digital presentations on the #1 mobile roofing app. Phone app features: - Unlimited property measurements from satellite, aerial, drone, and blueprint images - Auto pitch detection - Customized digital pitchbook - Organize property photos by project - Manage & contact customers - Manage tasks - Digital manufacturers catalogs - One monthly or annual flat-fee subscription - Eliminate cost of 3rd-party takeoffs Since 2012, iRoofing has helped roofing contractors close sales faster, increase sales closing ratio, grow their businesses and keep their team synched. Use the iPhone® app as a stand-alone or as a companion to the iPad version which enables unlimited estimates, plus roofing and siding simulations.

Screenshots

Carpentry Formulator4 screens
iRoofing Phone App4 screens

Verdict

The call

The clearest difference is rating: iRoofing Phone App at 4.5 against Carpentry Formulator's 3.8. iRoofing Phone App also leads on in-app purchases (none vs 1) and review sentiment (58% vs 25%). On price, update cadence, 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

Both are free to download. Carpentry Formulator sells 1 one-off in-app purchase. iRoofing Phone App asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

iRoofing Phone App holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: iRoofing Phone App has 40 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 25% of Carpentry Formulator's written reviews are positive against 58% of iRoofing Phone App's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

Scorecard6 real differences · 4 level
Carpentry Formulator versus iRoofing Phone App: the parameters behind the verdict, then further details
ParameterCarpentry FormulatoriRoofing Phone App
PriceFreeFree
Rating3.8 (4 ratings)4.5 (40 ratings) — better
Positive reviews25.0% of reviews58.3% of reviews — better
Number of ratings440 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree — betterSubscription
DevicesiPhone, iPad — betteriPhone
Requires iOS18.616.0 — better
Further details — not scored
Size23 MB197 MB
Age rating4+4+
DeveloperHistorycentral.comApplosophy, LLC

Customer experience

Carpentry Formulator

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews8 reviews
Positive25.0%
Neutral12.5%
Negative62.5%

iRoofing Phone App

All ratings40 ratings
Positive87.5%
Neutral2.5%
Negative10.0%
Written reviews12 reviews
Positive58.3%
Neutral8.3%
Negative33.3%

In-app purchases

1 purchases

Carpentry Formulator

One-time1
  • Professional Features$2.99
None

iRoofing Phone App

No in-app purchases

Questions

Is Carpentry Formulator free?
Carpentry Formulator is free to download, with in-app purchases available.
Is iRoofing Phone App free?
iRoofing Phone App is free to download, with no in-app purchases.
Which has better reviews, Carpentry Formulator or iRoofing Phone App?
iRoofing Phone App is rated higher. Carpentry Formulator averages 3.8 out of 5 from 4 ratings, while iRoofing Phone App averages 4.5 from 40 ratings.
Do Carpentry Formulator or iRoofing Phone App have ads?
Neither Carpentry Formulator nor iRoofing Phone App shows ads.
Which is updated more often, Carpentry Formulator or iRoofing Phone App?
Carpentry Formulator ships an update every 2 months, and iRoofing Phone App every 2 months. Most recently, Carpentry Formulator was updated on October 23, 2026 and iRoofing Phone App on October 22, 2026.

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