Construction Calculator vs Decks Builder
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
Decks Builder
Design and plan custom decks with a framing-first approach. Visualize your projects in 3D, generate material estimates, and export plans in various formats. Ideal for contractors and serious DIYers.
- Framing-first deck workflow
- 3D project review
- Material takeoffs and cost estimates
- Multiple export formats (PDF, CSV, DXF, SVG)
- Support for various deck types
- Live 2D deck plans
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Design decks with a workflow built for real projects. Decks Builder is a framing-first deck planning app for contractors, remodelers, deck builders, designers, and serious DIY users. Create deck layouts, review framing, inspect the design in 3D, and generate the export files you need while keeping projects stored on your device. Build from simple to advanced deck types: - Straight decks - L-shaped and U-shaped decks - Freestanding layouts - Wraparound and custom workflows - Gazebo, multi-level, and roof-over-deck planning Plan with build-focused tools: - Framing-first deck workflow - Joist, beam, post, and perimeter review - Validation notes while you work - Material takeoffs and cost estimates - Imperial and metric input Review and export with confidence: - Live 2D deck plans - 3D project review - PDF, CSV, PNG, DXF, and SVG exports - Portable project bundles for local import/export - Saved versions and project history Free includes straight deck planning and limited saved projects. Premium unlocks advanced deck types, deeper exports, 3D workflows, and more saved project capacity. Decks Builder is designed to help you plan faster and communicate more clearly before building. Always verify dimensions, spans, loads, code requirements, and site conditions before construction. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Construction Calculator at 4.7 against Decks Builder's 2.0. Construction Calculator also leads on ratings volume (22 vs 1). On price, ads, in-app purchases and monetization model 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 12 in-app purchases, starting at $2.99 per 7 days and Decks Builder sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
Construction Calculator holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Construction Calculator has 22 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Construction Calculator | Decks Builder |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (22 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 22 — better | 1 |
| Update frequency | Fortnightly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 49 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Shapkin Dev | Jalsaa |
Customer experience
Construction Calculator
Decks Builder
In-app purchases
Construction Calculator
- Carpenter PRO - Weekly$2.997 Days
- Carpenter PRO — Annual3 Days trial$19.991 Year
- RL Level & Benchmark Calculator$3.99
- Gravel Volume Calculator$3.99
- Stair Stringer & Rise Run Calc$3.99
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- 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
Decks Builder
- Premium Monthly$9.991 Month
- Premium Yearly$69.991 Year
Questions
Is Construction Calculator free?
Is Decks Builder free?
Which has better reviews, Construction Calculator or Decks Builder?
Do Construction Calculator or Decks Builder have ads?
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