Comparison

Construction Guru vs Carpenter Pro Calc

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

Head to head
About

Construction Guru

Read full description

A complete construction calculator. One price. No subscriptions. $19.99. One time. Every feature. No subscription. Ever. Try everything free for 30 days. No credit card required. WHAT'S INCLUDED Core Calculator - Feet-inch-fraction math - Length, width, height, area & volume - Unit conversions (imperial & metric) - Triangle solver (SSS/SAS/ASA/AAS/SSA) - Paperless tape - 9-slot memory Framing Module - Right-angle solver (pitch, rise, run, diagonal) - Rafter calculator with bird's mouth details - Hip/valley rafters with backing angles - Stair calculator with IRC code compliance - Stringer cutting guide - Stud calculator with sheet count - Floor joist calculator - Baluster spacing with code checks - Fence project planner (multi-run, gates, shared corners) - Compound miter calculator - Rake wall calculator - Roofing estimator Tools Module - Trigonometry (sin/cos/tan/asin/acos/atan) - Board feet with species pricing - Circle & arc calculator - Percentage & square root BUILT FOR THE JOBSITE - Large touch targets that work with gloves - High contrast display readable in sunlight - Keep-screen-on mode - Works fully offline - Every calculation feels instant WHAT MAKES IT DIFFERENT - Visual layout previews and diagrams - Shareable results with professional formatting - IRC & IBC code compliance flags - Configurable fraction resolution (1/16", 1/32", 1/64") - Rounding indicators show when a measurement falls between fraction marks - Live-updating guided calculators - 4 themes and 6 button styles - Auto-saves your work

About

Carpenter Pro Calc

This comprehensive calculator is designed for construction professionals, offering a wide range of tools for measurements, estimations, and layout calculations. It provides both free and pro features, all accessible offline and without ads.

Highlights
  • Fractional math for measurements
  • Unit conversion for various metrics
  • Area and roof pitch calculations
  • Stair and rafter layout tools
  • Material and concrete slab estimation
  • Framing and tile layout assistance
  • Offline functionality
Features
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Built in 2026, not 2012. Carpenter is the trade calculator for carpenters, framers, roofers, and remodelers who are tired of plastic-calculator emulators, ads mid-job, and per-trade upsells. One-time $14.99. Full Pro toolkit. All IRC editions. Forever. FREE CALCULATORS • Feet-Inch Calculator — fractional math (5'4 1/2" + 3'7 3/8") with configurable precision (1/2, 1/4, 1/8, 1/16, 1/32) • Unit Converter — Length, Area, Volume, Temperature, Weight, Pressure (ft↔m, in↔mm, ft²↔m², yd³↔m³, °F↔°C, lb↔kg, psi↔kPa) • Area Calculator — rectangle, triangle, circle, trapezoid • Roof Pitch Calculator — rise/run ↔ angle ↔ slope % PRO CALCULATORS — $14.99 one-time (V1.0) • Stair Calculator — total rise/run, treads, IRC R311.7 layout, feet-inch fractions • Rafter Calculator — common, hip, valley, jack, ridge cut, birdsmouth, tail cut, plumb/bevel • Material Estimator — board feet, lineal feet, sheet goods, waste • Concrete Slab — yards, 60lb/80lb bags, rebar grid, expansion joints • Framing Layout — wall studs (16/19.2/24 OC), plates, blocking, header sizing per IRC R602 • Tile Layout — area + grout joint + waste, per-box, layout offset • Roof Coverage — squares, bundles, ridge cap, drip edge, underlayment REFERENCE TABLES • IRC R602 — stud spacing • IRC R311 — stair geometry • IRC R905 — roofing material reference • Lumber dimensions (nominal vs actual) WHY CARPENTER? - No ads. Ever. - No accounts. No sign-in. - All IRC editions included — 2018, 2021, 2024 (no future upsell) - No subscription required — $14.99 once, forever - 7-day free trial of Pro - 100% offline — no signal needed on the jobsite - Dark mode + glove-friendly tap targets - Universal — iPhone + iPad in one purchase Same pricing model as Conduit — our sister electrician calculator. You buy it once, you own it forever. That's the deal. — LEGAL — Privacy Policy: https://panxiang1017.github.io/StaticPage/privacy-policy.html Terms of Use (EULA): https://panxiang1017.github.io/StaticPage/terms-of-use.html

Screenshots

Construction Guru4 screens
Carpenter Pro Calc4 screens

Verdict

The call

The clearest difference is update cadence: Construction Guru at daily against Carpenter Pro Calc's every 6 days. On price, ads, in-app purchases 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. Construction Guru sells 1 one-off in-app purchase and Carpenter Pro Calc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Construction Guru ships an update daily, Carpenter Pro Calc every 6 days. The most recent releases landed on October 9, 2026 and October 11, 2026 respectively.

Scorecard1 real difference · 8 level
Construction Guru versus Carpenter Pro Calc: the parameters behind the verdict, then further details
ParameterConstruction GuruCarpenter Pro Calc
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyDaily — betterEvery 6 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size4 MB2 MB
Age rating4+4+
DeveloperJaime McGauley向 潘

In-app purchases

1 purchases

Construction Guru

One-time1
  • Full Access Unlock$19.99
1 purchases

Carpenter Pro Calc

One-time1
  • Carpenter Pro — Unlock All$9.99

Questions

Is Construction Guru free?
Construction Guru is free to download, with in-app purchases available.
Is Carpenter Pro Calc free?
Carpenter Pro Calc is free to download, with in-app purchases available.
Do Construction Guru or Carpenter Pro Calc have ads?
Neither Construction Guru nor Carpenter Pro Calc shows ads.
Which is updated more often, Construction Guru or Carpenter Pro Calc?
Construction Guru ships an update daily, and Carpenter Pro Calc every 6 days. Most recently, Construction Guru was updated on October 9, 2026 and Carpenter Pro Calc on October 11, 2026.

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