Comparison

Construction Calculator vs ObrIA

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

Head to head
About

Construction Calculator

This app provides a comprehensive suite of tools for construction professionals and DIY enthusiasts. It offers precise calculations for decking, roofing, stairs, concrete, and more, with support for both metric and imperial units. Designed for jobsite use, it works offline and provides clear visuals for accurate on-site measurements.

Highlights
  • Decking and flooring calculations
  • Roofing material and coverage estimators
  • Stair and stringer rise/run calculations
  • Concrete, asphalt, and gravel volume estimators
  • Slope, pitch, and angle framing helpers
  • Unit converter with mixed-unit support
  • Offline functionality
Read full description

Build faster, measure smarter. Pro² is a complete construction calculator for decking, roofing, concrete, stairs, framing and precise on-site measurements. It’s made for builders, carpenters, contractors and serious DIY who need accurate answers in seconds. DECKING & FLOORING • Area, board runs, spacing and waste allowance • Material takeoff for boards and joists ROOFING (METAL & TILE) • Coverage and sheet/tile counts • Overhangs, pitch, angle and rafter length helpers STAIRS & STRINGERS • Rise/run, slope %, angle (°) and stringer length • Clear breakdowns and step-by-step visuals BALUSTERS, RAILING & EVEN SPACING • Perfect marks from 0 to full length • Spacing tables for clean, consistent layouts CONCRETE, ASPHALT, GRAVEL & SOIL • Volume estimators for slabs, pads, footings and fills • Smart rounding for real-world quantities SLOPE, PITCH & ANGLES • Fast framing helpers for cuts and layout • Metric and imperial support in every tool UNIT CONVERTER • Length, area, volume, density and weight • Built for mixed-unit jobs (mm, ft, inches) QUICK CALCULATOR • Running history with one-tap copy/share MADE FOR THE JOBSITE • Fraction support and practical defaults • Works fully offline—no signal required • Clean visuals that stay readable outdoors WHY PROS USE PRO² • One app instead of juggling multiple separate tools • Accurate results, simple inputs and clear diagrams • New tools and improvements arrive regularly based on user feedback Pro² is built for professional construction, carpentry, decking, roofing and framing work—yet intuitive enough for DIY home projects. Upgrade to unlock additional tools and advanced features when you’re ready to grow your toolkit. SUBSCRIPTION TERMS • Carpenter Pro is an optional auto-renewing subscription with Weekly and Annual plans. • A 3-day free trial is available on the Annual plan. • Payment is charged to your Apple ID and subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. • You can manage or cancel your subscription in your App Store account settings. • Lifetime is a one-time purchase and does not auto-renew. • The localized price is shown in-app before you confirm. Terms of Use (Apple EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shapkin.dev/apps/carpenter/privacy.html

About

ObrIA

Features
Read full description

ObrIA es la app para controlar tu obra o reforma de principio a fin: proyectos, medidas, materiales y gastos, todo en un mismo sitio. ESCANEA TUS TIQUES CON IA Haz una foto al tique de compra y ObrIA rellena automáticamente el importe, la descripción, la fecha, la tienda y la forma de pago (tarjeta o efectivo). Solo tienes que revisar y guardar. PROYECTOS Y PRESUPUESTO Crea un proyecto por obra, fija el presupuesto y controla en todo momento cuánto llevas gastado y cuánto te queda. Si te pasas, ObrIA te avisa. Al terminar, obtén un resumen completo: duración, gasto por categoría, tarjeta y efectivo, y ahorro o exceso. CALCULADORA DE HABITACIONES Introduce las medidas y calcula al instante superficies, perímetro y volumen. Puertas y ventanas con medidas personalizables. PINTURA Y AZULEJO - Litros y botes de pintura por color, con dos manos y margen incluido - Cajas de azulejo o tarima según la medida real de la pieza, por piezas o por m² por caja - Alicatado parcial: azulejo hasta la altura que quieras y pintura en el resto - Cola y lechada necesarias MATERIALES POR PROYECTO Vincula cada habitación a su obra y consulta la lista completa de materiales que necesitas comprar. HERRAMIENTAS - Nivel de burbuja en grados - Conversor de unidades (longitud, superficie, volumen y peso) - Tiempos de secado de referencia - Calculadora rápida con historial Disponible en español, inglés y francés. Desarrollada por NyMA Design.

Screenshots

Construction Calculator4 screens
ObrIA4 screens

Verdict

The call

The clearest difference is in-app purchases: ObrIA at none against Construction Calculator's 15. ObrIA also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). Construction Calculator's advantage is update cadence (every 2 weeks vs every 4 months). On price and ads 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 Calculator sells 15 in-app purchases, starting at $2.99 per 7 days. ObrIA asks for nothing beyond the download.

UpkeepUpdate frequency

Construction Calculator ships an update every 2 weeks, ObrIA every 4 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Construction Calculator versus ObrIA: the parameters behind the verdict, then further details
ParameterConstruction CalculatorObrIA
PriceFreeFree
Rating4.8 (24 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings24 — better—
Update frequencyEvery 2 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size62 MB23 MB
Age rating4+4+
DeveloperShapkin DevNicolas Armanini

In-app purchases

15 purchases

Construction Calculator

Subscriptions4
  • Carpenter PRO - Weekly$2.997 Days
  • Full Access — Weekly$5.997 Days
  • Carpenter PRO — Annual3 Days trial$19.991 Year
Show 1 more
  • Full Access — Annual3 Days trial$39.991 Year
One-time11
  • RL Level & Benchmark Calculator$3.99
  • Gravel Volume Calculator$3.99
  • Stair Stringer & Rise Run Calc$3.99
Show 8 more
  • Soil Excavation Volume Calculator$3.99
  • Asphalt Tonnage Calculator$3.99
  • Right Triangle & Pitch Calculator$3.99
  • Running Measurements Calculator$3.99
  • Unit Converter: Feet & Metric$3.99
  • Paint Area Coverage Estimator$3.99
  • Lifetime Access$39.99
  • Lifetime Access$79.99
None

ObrIA

No in-app purchases

Questions

Is Construction Calculator free?
Construction Calculator is free to download, with in-app purchases available.
Is ObrIA free?
ObrIA is free to download, with no in-app purchases.
Do Construction Calculator or ObrIA have ads?
Neither Construction Calculator nor ObrIA shows ads.
Which is updated more often, Construction Calculator or ObrIA?
Construction Calculator ships an update every 2 weeks, and ObrIA every 4 months. Most recently, Construction Calculator was updated on October 25, 2026 and ObrIA on October 24, 2026.

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