Construction Calculator vs ObrIA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
ObrIA
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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
Verdict
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
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.
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.
| Parameter | Construction Calculator | ObrIA |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (24 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 24 — better | — |
| Update frequency | Every 2 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 62 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Shapkin Dev | Nicolas Armanini |
In-app purchases
Construction Calculator
- Carpenter PRO - Weekly$2.997 Days
- Full Access — Weekly$5.997 Days
- Carpenter PRO — Annual3 Days trial$19.991 Year
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- Full Access — Annual3 Days trial$39.991 Year
- RL Level & Benchmark Calculator$3.99
- Gravel Volume Calculator$3.99
- Stair Stringer & Rise Run Calc$3.99
Show 8 moreShow fewer
- 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
ObrIA
No in-app purchases
Questions
Is Construction Calculator free?
Is ObrIA free?
Do Construction Calculator or ObrIA have ads?
Which is updated more often, Construction Calculator or ObrIA?
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