Comparison

Construction Calculator A1 vs Auto RC

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

Head to head
About

Construction Calculator A1

This app provides specialized calculators for construction professionals, including concrete, rebar, and area/volume calculations. It offers material quantity estimation, unit conversion, and professional features like BOQ export and project organization. Designed for contractors, builders, and engineers on job sites worldwide.

Highlights
  • Concrete material quantity calculation
  • Rebar bending schedule and weight calculation
  • Feet-inch arithmetic without decimal conversion
  • Area and volume calculations for 15+ shapes
  • Construction-specific unit conversions
  • Bill of Quantities (BOQ) export to PDF/Excel
  • Save and organize calculations by project
Features
Read full description

The #1 construction calculator trusted by 1M+ contractors, builders, and engineers worldwide. Construction Calculator A1 — the complete civil engineering toolkit for contractors, builders and engineers. 500+ calculators, from a single slab to a client-ready Bill of Quantities. CONCRETE CALCULATOR • Slabs, footings, columns, beams, stairs, walls & culverts • Instant material quantities: cement bags, sand, aggregate • Mix ratios and grade selection for any specification REBAR & STEEL CALCULATOR • Bar Bending Schedule (BBS) with shape codes and cutting lengths • Weight calculator for metric and US bar sizes (#3–#11) • Lap length, cover & spacing calculations • Steel tonnage for structural estimates FEET-INCHES CALCULATOR • Add, subtract, multiply, divide in feet-inches-fractions • No decimal conversion needed • Running tape you can review and reuse BILL OF QUANTITIES (BOQ) — NEW • Send any calculation straight to a BOQ • Organise by project, track total value and % priced • Professional report with your company header and signature • Export as PDF or Excel AUTOMATIC DRAWINGS — NEW • Calculators draw a dimensioned sketch of what you entered • Brickwork, steel shapes, concrete sections, excavation, stairs • Drawings and a DIMENSIONS panel included in every PDF MATERIAL PRICE LIBRARY — NEW • Store your own rates in your own currency • Rates auto-fill into cost fields across the app • Six regional presets with local materials and units APPLE WATCH APP — NEW • Converter, material weight, volume, diagonal and rebar on your wrist • Prices synced from iPhone, with full calculation history AREA & VOLUME • 50+ shapes: rectangle, circle, triangle, trapezoid, polygons, prisms, cones, spheres and more • Draw Shape and GPS Area for irregular plots • Room area, paint coverage, flooring and excavation volumes UNIT CONVERTER • Length, area, volume, weight, pressure, power, speed, density and more • Construction-specific units throughout LEARN — NEW • Civil engineering articles, checklists and reference charts • Topic quizzes with instant explanations • Daily streaks, XP and achievement badges PROFESSIONAL FEATURES • Save and organise calculations by project, with notes and photos • Share estimates with clients instantly • Construction cost estimator with breakdown charts and quotations • Company branding on every report • Google Drive and iCloud backup, cloud sync across devices • Metric and Imperial, 16 languages, light and dark themes • Works offline — calculations need no internet SUBSCRIPTION INFORMATION Construction Calculator Pro is available as a monthly or yearly auto-renewing subscription, or as a one-time Lifetime purchase. • Payment is charged to your Apple ID account at confirmation of purchase. • Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. • Your account is charged for renewal within 24 hours prior to the end of the current period, at the rate of your selected plan. • Manage or cancel your subscription in your App Store account settings after purchase. Privacy Policy: https://www.binaryandbricks.com/app/privacypolicy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Built for real job sites. Download now and estimate like a pro.

About

Auto RC

This app transforms structural design into a superpower by automatically generating beam layouts from floor plans using AI. It offers tools for analyzing and designing structural elements, with advanced features for full building modeling and detailed exports available through a subscription.

Highlights
  • AI-powered floor plan scanning
  • Automatic beam layout generation
  • 3D rebar detailing
  • Full building structural modeling
  • 3D structural analysis
  • Exportable calculation reports and CAD plans
Features
Read full description

Structural design becomes your new superpower. Auto RC doesn't just deliver fast results — it helps you understand the fundamentals of structural design and empowers you to create professional-grade structures with confidence. Free Features for All Users 1) Scan floor plans and auto-generate beam layouts using AI 2) Analyze and design structural elements automatically (up to 50 beams per plan) 3) View 3D rebar details for beams 4) Customize beam and slab design as needed 5) Save projects by watching ads Premium Features for Subscribers 1) Build full structural models with Pro Mode 2) Design and edit entire buildings: slabs, beams, columns, foundations, stairs, roofs, and steel frames 3) Run full 3D structural analysis with load combinations 4) Export full calculation reports 5) Auto-generate rebar models for the entire structure 6) Export bar cut lists and shop drawings 7) Export bill of quantities (BOQ) 8) Export structural CAD plans 9) Export 3D rebar models in IFC format for BIM compatibility 10) Enjoy an ad-free experience Auto RC Subscription Plans Weekly: $4.99 Monthly: $9.99 Yearly: $99.99 (save 2 months) Free 7-day trial – cancel anytime. Your premium access stays active until the end of the trial or billing cycle. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Construction Calculator A14 screens
Auto RC4 screens

Verdict

The call

The clearest difference is in-app purchases: Construction Calculator A1 at none against Auto RC's 8. Construction Calculator A1 also leads on rating (4.8 vs 4.5) and ratings volume (26 vs 6). Auto RC's advantage is ads (none vs shown) and review sentiment (75% vs 67%). On price, update cadence 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

Both are free to download. Auto RC sells 8 in-app purchases, starting at $9.99 per month. Construction Calculator A1 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Construction Calculator A1 holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 26 and 6 respectively. Written reviews complicate that: 67% of Construction Calculator A1's written reviews are positive against 75% of Auto RC's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Construction Calculator A1 ships an update every 4 weeks, Auto RC every 3 weeks. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

Scorecard7 real differences · 3 level
Construction Calculator A1 versus Auto RC: the parameters behind the verdict, then further details
ParameterConstruction Calculator A1Auto RC
PriceFreeFree
Rating4.8 (26 ratings) — better4.5 (6 ratings)
Positive reviews66.7% of reviews75.0% of reviews — better
Number of ratings26 — better6
Update frequencyEvery 4 weeksEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFreemium
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size161 MB76 MB
Age rating4+4+
DeveloperBinary And Bricks Pvt Ltdvachiraphun mekvarmdee

Customer experience

Construction Calculator A1

All ratings26 ratings
Positive96.2%
Neutral0.0%
Negative3.8%
Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

Auto RC

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

Construction Calculator A1

No in-app purchases

8 purchases

Auto RC

Subscriptions2
  • สมัครสมาชิกรายเดือน7 Days trial$9.991 Month
  • สมัครสมาชิกรายปี7 Days trial$99.991 Year
One-time6
  • Export IFC model file$2.99
  • Export structural model file$2.99
  • สมัครสมาชิกแบบไม่ต่ออายุ$4.99
Show 3 more
  • Export structural model file$4.99
  • Export structural model file$7.99
  • Export structural model file$9.99

Questions

Is Construction Calculator A1 free?
Construction Calculator A1 is free to download, with no in-app purchases.
Is Auto RC free?
Auto RC is free to download, with in-app purchases available.
Which has better reviews, Construction Calculator A1 or Auto RC?
Construction Calculator A1 is rated higher. Construction Calculator A1 averages 4.8 out of 5 from 26 ratings, while Auto RC averages 4.5 from 6 ratings.
Do Construction Calculator A1 or Auto RC have ads?
Construction Calculator A1 shows ads; Auto RC does not.
Which is updated more often, Construction Calculator A1 or Auto RC?
Construction Calculator A1 ships an update every 4 weeks, and Auto RC every 3 weeks. Most recently, Construction Calculator A1 was updated on October 15, 2026 and Auto RC on October 16, 2026.

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