Comparison

Construction Calc Pro 2 vs Hammer Construction Calculator

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

Head to head
About

Construction Calc Pro 2

This powerful calculator app is designed specifically for construction professionals, enabling calculations in feet, inches, and fractional inches. It offers specialized modules for material estimates, conversions, area and volume calculations, trigonometry, and stair design, transforming your device into a comprehensive construction computer.

Highlights
  • Calculations in feet, inches, and fractional inches
  • Material estimation modules
  • Conversions for various measurements
  • Area and volume calculations
  • Trigonometry and triangle solver
  • Stairwell and stair calculator
  • Crown moulding module
Features
Currently charting
Read full description

C-Calc Pro 2 is a calculator app designed by, and for construction workers. Unlike a standard construction calculator, C-Calc uses the power of the IPhone to create a construction computer. This full function calculator works as a standard calculator but more importantly allows you to work in feet, inches, and fractional inches. The calculator also features several other modules for performing material estimates, crown moulding, conversions, area calculations and volume calculations, arcs and arches, trig and triangles, and stairwells and stairs. Contractors, architects, tradespersons, builders and even do-it-yourselfers will find this app ideal. Features include: - Universal app runs on iPhone, iPad, and Mac. - Add, subtract, multiply, divide, exponent, root and more with measurements in feet, inches, and fractional inches. - Reduce fractions and fractional inches to their lowest common denominator. - Convert decimal values to fractions and vice versa. - Unlimited memory slots to store, recall, add and subtract memory values. Memory values are shared between all modules as well. - Split screen shows result, memory, and measurement values all at once. - Calculate square footage and cubic footage easily. - Conversions for temperatures, distances, angles, areas, and many more built in. - Help screen and full instructions included in program. - Estimate drywall, concrete, block, paint, tile, lumber, and associated materials. - Transfer individual estimates to a running estimate sheet where you can keep track of your total as well as email the estimate to a man in the field, to yourself, or to the supplier. - Calculate surface areas and volumes of a large variety of shapes (including compound objects) for material estimates. - Crown moulding module built in which supports any spring angle and any wall angle. Actually, see the saw settings on your phone. - Trigonometry calculator included for solving triangles, rise/run, rafters, slope, and more. Triangles are graphically mapped on your phone's screen to give a visual. - Advanced arc/circle calculator for solving arcs, radius, circumference, sector areas, sector angles, and circle areas. - Stair calculator for solving rise, run, unit rise, unit run, # of risers, # of treads, incline, stairwell opening, and stringer length. Drawings are to scale and may be easily printed or saved. Forget a bulky $200 calculator and simply buy the app. The app will always be on your hip when you need it most instead of in the truck's glove compartment. C-Calc Pro 2 has much more to offer in the coming months with free upgrades as well. We take our fellow tradesmen's opinions very seriously and the app will grow to reflect the people's opinion.

About

Hammer Construction Calculator

This app provides advanced construction calculations, including feet-inch-fraction math and specialized tools for various trades. It also offers material takeoff and PDF quote generation, with features for jobsite planning and notes.

Highlights
  • Feet-inch-fraction math with metric conversion
  • 20 specialized trade calculators with diagrams
  • Material takeoff and PDF quote generation
  • Jobsite plans and notes with blueprint support
  • Offline functionality
  • Customizable rounding and unit support
Read full description

The construction calculator that finishes the job: feet-inch-fraction math, 20 trade calculators, and a material takeoff that turns into a professional PDF quote — all in one app. WHY PROS SWITCH TO HAMMERCALC FEET-INCH-FRACTION MATH, DONE RIGHT - Mix feet, inches, millimeters, and meters in one calculation - Tape-measure fraction strip: tap or slide to enter 1/16s faster than typing - Results in feet-inches AND metric, side by side - Custom rounding: 1/16", 1/32", 1/64", or decimal 20 TRADE CALCULATORS — EACH WITH A LIVE DIAGRAM - Framing: rafters (hip/valley/jack cut lists, birdsmouth), roof squares & flashing, wall framing with stud counts, rake walls - Stairs: rise, run, stringers — with IRC code checks built in (max riser, tread, headroom, 2R+T comfort) - Outdoor: decks, fences (incl. chain-link), concrete bags/yards/rebar, baluster spacing (4" sphere rule) - Finishes: drywall, paint, tile, flooring, siding - Layout & lumber: square footage with cutouts, board feet & cost, cut list optimizer (fewest boards, least waste), compound miter/crown, triangle & pitch, circle/arc layout - Every field label explains itself — long-press for a diagram FROM CALCULATION TO QUOTE — NO OTHER CALCULATOR DOES THIS - One tap sends any tool's material list to a project takeoff - Buy-list smarts: rounds up to lengths the yard actually sells, never orders short - Check off materials on site as you load the truck - Price book remembers what you paid last time - Add labor, markup, and tax — export a branded PDF quote with your logo - Share as PDF, CSV, or plain text PLANS & NOTES ON THE JOBSITE - Load blueprint PDFs and photos — auto-saves your page, zoom, and position - Job notes with one-tap capture of any calculation - Quick links to your building codes and span tables BUILT FOR THE FIELD - Works fully offline. No ads. No popups. No data collection. - Dark mode for early starts, haptic keys, 12 accent colors - English & Español — switch live in Settings - iPhone, iPad, and Mac PERFECT FOR Carpenters • Framers • Contractors • Remodelers • Deck builders • Estimators • Engineers • Machinists • Architects • Serious DIYers TRY IT FREE FOR 7 DAYS Full access to everything. No commitment — cancel anytime. A subscription is required after the trial. Auto-renews unless canceled 24 hours before the period ends. Manage or cancel in Settings > [Your Apple ID] > Subscriptions. Support: hammercalc@gmail.com Terms: https://www.hammerstorm.co/terms Privacy: https://www.hammerstorm.co/privacy

Screenshots

Construction Calc Pro 24 screens
Hammer Construction Calculator3 screens

Verdict

The call

The clearest difference is price: Hammer Construction Calculator at Free against Construction Calc Pro 2's $13.99. Hammer Construction Calculator also leads on rating (5.0 vs 4.5). Construction Calc Pro 2's advantage is in-app purchases (none vs 2) and chart position (#184 vs unranked). On update cadence, ads, device support and iOS requirement 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

Hammer Construction Calculator is free to download; Construction Calc Pro 2 costs $13.99 up front. Hammer Construction Calculator sells 2 in-app purchases, starting at $3.99 per month. Construction Calc Pro 2 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Hammer Construction Calculator holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Construction Calc Pro 2 has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 5, 2026 and September 20, 2026 respectively.

Scorecard6 real differences · 5 level
Construction Calc Pro 2 versus Hammer Construction Calculator: the parameters behind the verdict, then further details
ParameterConstruction Calc Pro 2Hammer Construction Calculator
Price$13.99Free — better
Rating4.5 (6 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings6 — better1
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#184 — better—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.516.0 — better
Further details — not scored
Size85 MB39 MB
Age rating4+4+
DeveloperSnappy Appz Inc.garrett hiebert

Customer experience

Construction Calc Pro 2

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Hammer Construction Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Construction Calc Pro 2

No in-app purchases

2 purchases

Hammer Construction Calculator

Subscriptions2
  • HammerCalc Monthly7 Days trial$3.991 Month
  • HammerCalc Yearly7 Days trial$24.991 Year

Questions

Is Construction Calc Pro 2 free?
Construction Calc Pro 2 costs $13.99, with no in-app purchases.
Is Hammer Construction Calculator free?
Hammer Construction Calculator is free to download, with in-app purchases available.
Which has better reviews, Construction Calc Pro 2 or Hammer Construction Calculator?
Hammer Construction Calculator is rated higher. Construction Calc Pro 2 averages 4.5 out of 5 from 6 ratings, while Hammer Construction Calculator averages 5.0 from 1 ratings.
Do Construction Calc Pro 2 or Hammer Construction Calculator have ads?
Neither Construction Calc Pro 2 nor Hammer Construction Calculator shows ads.
Which is updated more often, Construction Calc Pro 2 or Hammer Construction Calculator?
Construction Calc Pro 2 ships an update every 2 months, and Hammer Construction Calculator every 2 months. Most recently, Construction Calc Pro 2 was updated on September 5, 2026 and Hammer Construction Calculator on September 20, 2026.

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