Comparison

Carpentry Formulator vs Foundation Footing Calculator

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

Foundation Footing Calculator

Instantly calculate concrete foundation requirements, including rebar, excavation volumes, and material costs. Streamline construction planning and estimations with precise, material-specific calculations and smart unit conversions. Ideal for professionals and DIYers alike, it helps reduce errors and speed up project timelines.

Highlights
  • Foundation calculations (strip, slab, diagonal)
  • Rebar quantity and spacing tool
  • Excavation volume and cost estimator
  • Smart unit conversion (metric/imperial)
  • Material-specific densities
  • Offline work capability
Features
Read full description

Instant construction calculations for foundations, rebar, excavation & costs. Plan, calculate and manage your foundations with confidence. Whether you’re a civil engineer, contractor, site supervisor, estimator or hands‑on builder, our app removes the guesswork from strip and slab foundations, rebar layouts, excavation volumes and cost planning. Why you’ll love it: - Foundation calculations made effortless — Single, wide, stepped, deep or cantilever strip options; slab design and diagonal spans—all in one tool - Smart unit conversion — Length, area, volume and weight; switch instantly between metric, imperial or even unconventional units - Material‑specific precision — Select from concrete, soil, sand, gravel, steel, wood and more—each with real densities for accurate outputs - Rebar Calculator — Compute reinforcement steel quantities, spacing and layout quickly - Excavation Calculator — Estimate digging volumes, backfill needs and soil removal costs with clarity Built for professionals (and smart DIYers too): - Civil engineers & project managers streamline bids and plans - Site supervisors and contractors get fast, accurate results on site - Students and trainees learn foundation design through guided inputs - DIYers and real estate agents can size plot foundations, backfill and materials without hassle Features at a glance: - Foundation modules: strip variants, slab & diagonal calculations - Rebar quantity & spacing tool - Excavation volume, backfill & cost estimator - Wide range of measurement and density units - Regional pricing support for materials (cost estimator) - Clean, intuitive interface with localized language support How this app makes your life easier: - Reduce calculation errors and avoid costly rework - Speed up planning and estimations—get results in minutes instead of hours - Work offline—great for remote sites with no internet - Always up to date: new materials, units or cost data added regularly Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Carpentry Formulator4 screens
Foundation Footing Calculator4 screens

Verdict

The call

Carpentry Formulator and Foundation Footing Calculator both sit at 3.8 stars, but that hides the real split: 25% of Carpentry Formulator's written reviews are positive against 0% of Foundation Footing Calculator's. Carpentry Formulator also leads on monetization model (free vs free with in-app purchases). Foundation Footing Calculator's advantage is iOS requirement (16.2 vs 18.6). On price, rating, ratings volume and update cadence 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 and Foundation Footing Calculator sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Carpentry Formulator holds the better App Store score, 3.8 against 3.6. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews point the same way: 25% of Carpentry Formulator's written reviews are positive against 0% of Foundation Footing Calculator's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Carpentry Formulator versus Foundation Footing Calculator: the parameters behind the verdict, then further details
ParameterCarpentry FormulatorFoundation Footing Calculator
PriceFreeFree
Rating3.8 (4 ratings) — better3.6 (8 ratings)
Positive reviews25.0% of reviews — better0.0% of reviews
Number of ratings48 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.616.2 — better
Further details — not scored
Size23 MB8 MB
Age rating4+4+
DeveloperHistorycentral.comVladislav Zhirnov

Customer experience

Carpentry Formulator

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

Foundation Footing Calculator

All ratings8 ratings
Positive50.0%
Neutral37.5%
Negative12.5%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

In-app purchases

1 purchases

Carpentry Formulator

One-time1
  • Professional Features$2.99
3 purchases

Foundation Footing Calculator

Subscriptions2
  • Full version / monthly$0.991 Month
  • Full version / year$2.991 Year
One-time1
  • Remove ADS$4.99

Questions

Is Carpentry Formulator free?
Carpentry Formulator is free to download, with in-app purchases available.
Is Foundation Footing Calculator free?
Foundation Footing Calculator is free to download, with in-app purchases available.
Which has better reviews, Carpentry Formulator or Foundation Footing Calculator?
Carpentry Formulator is rated higher. Carpentry Formulator averages 3.8 out of 5 from 4 ratings, while Foundation Footing Calculator averages 3.6 from 8 ratings.
Do Carpentry Formulator or Foundation Footing Calculator have ads?
Neither Carpentry Formulator nor Foundation Footing Calculator shows ads.
Which is updated more often, Carpentry Formulator or Foundation Footing Calculator?
Carpentry Formulator ships an update every 2 months, and Foundation Footing Calculator every 2 months. Most recently, Carpentry Formulator was updated on October 30, 2026 and Foundation Footing Calculator on October 24, 2026.

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