Comparison

CASA Space Frame 3D vs Construction Calculator A1

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

Head to head
About

CASA Space Frame 3D

This app enables structural engineers to perform static and dynamic elastic analysis of 3D space-frames. It offers quick and precise modeling with graphical interaction, providing numerical and graphical results for deflections, forces, and mode shapes.

Highlights
  • Linear static analysis
  • Non-linear static analysis (P-Delta)
  • Dynamic analysis (natural modes, footfall)
  • Extensive section and material libraries
  • Graphical interactive results
  • Metric & imperial units
Read full description

Structural / Civil Engineering App for static & dynamic elastic analysis of general 3D space-frames. With CASA SF-3D an engineer can create 3D structural models of space-frames and obtain both the numerical results and graphical representation of the deflections, forces, natural frequencies, and mode shapes. There is an emphasis on quick and precise modelling with graphical interaction. Results are graphically interactive with a sliding readout of numerical results at any point along a member. More information about this App can be found in its integrated help and on our website. The App also contains "Replay Demonstrations" which describe and enact its use. === This App includes the following features: * Linear static analysis. * P-Delta non-linear static analysis. * Natural mode dynamic analysis. * Footfall dynamic analysis. * Sway-cases. * Geometry groups: - Include or exclude geometry from the analysis. - Groups can be combined into supergroups. * Multi-copying for rapid generation of regular geometry. * Rotation and reflection of geometry. * Solid rendering of geometry: - Member cross-sections drawn to scale. - Colour-coded by groups. * Viewpoint memories: - Store and recall for quick navigation. * Members can be oriented to a third node. * Gravity (self-weight) loading. * Factored load-case combinations. * Rubber-band box for large-area selection. === General Technical Features === * Automatic analysis. * Integrated extensive section library: - British, European, American, Canadian, Australian, South African, Japanese, Russian. - See our website for the range of shapes. * Integrated section generator for common shapes: - Open: I/H, channel, zed, angle, tee. - Hollow: Oval, Rectangular. - Solid: Oval, Rectangular. - Calculates: Area, Inertia, Torsional constant, Elastic moduli, mass. * Integrated material library: - Steel, Aluminium, Concrete, Timber, Glass. - User materials can be added. * Member ends can be rigid or pinned. * Loads applied as point, couple, trapezoid. * Multiple load-cases. * Statics results include: - Reactions, deflections, bending moments, shear forces, bending stress. - Points of interest. - Results given all along members. * Dynamic analysis considers self weight plus additional mass-cases. * Dynamic results include:   - Resonant frequencies   - Undamped oscillation mode shapes * Footfall results include: - Response factors. - Critical frequencies. - Both impulse and resonant responses. === General User Interface Features === * Universal App - for iPhone, iPod touch, and iPad. * Metric & imperial units. * Four simple interactive screens: - Geometry, Loading, Results: for interacting with the model. - Utilities: Supplementary functions (see below). * Easy modelling: - Tap to select; tap to edit. - Move and copy geometry. - Slide nodes along members. - Change member spans. - Split members. - Replicate loading across members. * Graphical drag-and-tap controls: - Rotate, pan, zoom the view with simple gestures. - Drag nodes for positions. - Drag loads for positions and magnitudes. - Drag marker along member to read off results values. - Tap on Points of Interest for important results.  - Select nodes to measure distances, angles, and areas between them. * Numeric entry available: - Double-tap on a datum to enter its numerical value. - Includes a convenient built-in calculator. * Straightforward section library: - Pick from country, shape, and size. - View diagram and properties. - For custom shapes, double-tap on dimensions to edit. - Axes can be rotated by 90 degrees. * Report generation: - Configurable content. - Graphical layout. - On-screen preview. - Export PDF by e-mail. - AirPrint. - CSV export of numerical data. * Supplementary functions: - Document titles. - Choice of unit system (UK/EU Metric, US Imperial). - On-line help. - Load, save, and export models.

About

Construction Calculator A1

This comprehensive tool offers over 500 construction calculators, from basic material quantities to complex bills of quantities. It generates automatic drawings, manages material prices, and provides learning resources for civil engineers and contractors.

Highlights
  • 500+ construction calculators
  • Concrete, rebar, and steel calculations
  • Feet-inch calculator
  • Bill of Quantities (BOQ)
  • Automatic drawings
  • Material price library
  • Unit converter
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.

Screenshots

CASA Space Frame 3D4 screens
Construction Calculator A14 screens

Verdict

The call

The clearest difference is price: Construction Calculator A1 at Free against CASA Space Frame 3D's $299.99. Construction Calculator A1 also leads on rating (4.7 vs 4.0) and ratings volume (29 vs 1). CASA Space Frame 3D's advantage is in-app purchases (none vs 6) and ads (none vs shown). On device support 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

Construction Calculator A1 is free to download; CASA Space Frame 3D costs $299.99 up front. Construction Calculator A1 sells 6 in-app purchases, starting at $2.99 per month. CASA Space Frame 3D asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Construction Calculator A1 holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Construction Calculator A1 has 29 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of CASA Space Frame 3D's written reviews are positive against 67% of Construction Calculator A1's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

CASA Space Frame 3D ships an update every 3 months, Construction Calculator A1 monthly. The most recent releases landed on October 23, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 2 level
CASA Space Frame 3D versus Construction Calculator A1: the parameters behind the verdict, then further details
ParameterCASA Space Frame 3DConstruction Calculator A1
Price$299.99Free — better
Rating4.0 (1 ratings)4.7 (29 ratings) — better
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings129 — better
Update frequencyEvery 3 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS14.1 — better15.0
Further details — not scored
Size6 MB182 MB
Age rating4+4+
DeveloperIntesym Ltd.Binary And Bricks Pvt Ltd

Customer experience

CASA Space Frame 3D

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Construction Calculator A1

All ratings29 ratings
Positive93.1%
Neutral0.0%
Negative6.9%
Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

In-app purchases

None

CASA Space Frame 3D

No in-app purchases

6 purchases

Construction Calculator A1

Subscriptions2
  • Pro access monthly subscription$2.991 Month
  • Pro access yearly subscription$24.991 Year
One-time4
  • 100 AI Credits$0.99
  • 500 AI credits$3.99
  • 500 AI credits$9.99
Show 1 more
  • Lifetime Access$39.99

Questions

Is CASA Space Frame 3D free?
CASA Space Frame 3D costs $299.99, with no in-app purchases.
Is Construction Calculator A1 free?
Construction Calculator A1 is free to download, with in-app purchases available.
Which has better reviews, CASA Space Frame 3D or Construction Calculator A1?
Construction Calculator A1 is rated higher. CASA Space Frame 3D averages 4.0 out of 5 from 1 ratings, while Construction Calculator A1 averages 4.7 from 29 ratings.
Do CASA Space Frame 3D or Construction Calculator A1 have ads?
Construction Calculator A1 shows ads; CASA Space Frame 3D does not.
Which is updated more often, CASA Space Frame 3D or Construction Calculator A1?
CASA Space Frame 3D ships an update every 3 months, and Construction Calculator A1 monthly. Most recently, CASA Space Frame 3D was updated on October 23, 2026 and Construction Calculator A1 on November 3, 2026.

Other comparisons