Comparison

Construction Expert A1 PRO vs Bimbit

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

Head to head
About

Construction Expert A1 PRO

This app is a comprehensive construction calculator designed for professionals. It offers advanced calculations for framing, stair layout, trade-specific needs, and material estimation, replacing the need for expensive hardware calculators.

Highlights
  • Feet-inch-fraction math
  • Right angle and roof framing
  • Stair layout calculations
  • Trade-specific calculators (Electrical, Plumbing, HVAC)
  • Area and volume calculations for 57 shapes
  • Material estimation tools
  • Project management and export options
Features
Read full description

Replace your $100+ hardware calculator with a smarter one. Construction Expert A1 Pro puts 150+ professional construction calculators in your pocket — feet-inch-fraction math, roofing, rafters, stairs, framing, concrete, material take-offs and more. Works fully offline. Built for general contractors, framers, carpenters, builders, estimators, electricians, plumbers, HVAC pros and serious DIY builders. WHY CONTRACTORS SWITCH - Enter 12' 7-3/16" the way you read it on the tape — no decimal conversion - Live drawings highlight each dimension as you enter it, so you know what every number means - One consistent keypad across every calculator, with a Next key that guides you through each form - Save calculations by project, attach photos, export branded PDF reports for your bid - No signal needed — works on the roof, in the basement or at the back of the lot PROFESSIONAL CONSTRUCTION CALCULATOR - Full feet, inches & fraction math, 1/16 to 1/64 with automatic simplification - Feet, inches, yards, meters, centimeters & millimeters - Percentage, square, cube, square root & reciprocal - Degrees-minutes-seconds and trigonometry (sin, cos, tan) - Expression mode with 12 construction formula templates - Running tape with save, share & print - 3 memory registers plus cumulative memory with count & average ROOFING & RAFTER CALCULATORS - Pitch, rise, run & diagonal — solve right triangles instantly - Common rafter length with plumb and level cut angles - Hip, valley & jack rafters with cheek cuts and on-center increments - Irregular and dual-pitch roofs - Rake wall stud lengths, ascending or descending - Roof area, squares, bundles & 4x8 sheet count - Interactive rafter diagrams STAIR & STRINGER CALCULATOR - Total rise to risers, treads & total run - Riser adjustment - Stringer length and angle, open or closed stringers - Interactive stair diagram with labeled dimensions TRADE CALCULATORS - Electrical: wire sizing (NEC), voltage drop, conduit fill, box fill & service sizing - Plumbing: pipe sizing, DFU, water heater, fitting offsets & drain slope - HVAC: BTU load, duct sizing, CFM & refrigerant charge - Landscaping: mulch, gravel, sod, irrigation, retaining walls & pavers MATERIAL ESTIMATION & TAKE-OFFS - Concrete volume for slabs, footings & columns, plus bag counts and rebar - Board feet, stud spacing & stud counts - Roofing squares, bundles, felt & ridge vent - Drywall, siding, flooring & insulation - Fence, deck, baluster & spindle spacing 57+ AREA & VOLUME SHAPES - Rectangles to L-shaped rooms, gable walls, pipes & toruses - Concrete steps, retaining walls & trenches - Perimeter, area, surface area & volume with labeled interactive diagrams 50+ CONSTRUCTION UNIT CONVERTERS - Length, area, volume, weight, temperature & pressure - Concrete bags, rebar, CMU blocks, board feet & aggregates - Lumber, drywall, roofing, siding, flooring & insulation - Wire gauge, conduit & breakers; PVC, copper & PEX pipe; HVAC tonnage PROJECTS, NOTES & EXPORT - Organize calculations by project and folder, with rich-text notes and photos - Favorites and searchable history - Professional PDF reports with your company branding - 7 PDF generators: rafters, stairs, fences, balusters, miters, materials & estimates - CSV, PNG & plain-text export MADE TO FIT YOUR WORK - Imperial or metric default units; fraction resolution from 1/2 to 1/64 - Dark, light or system theme; home screen widgets; haptic feedback - English, Spanish, French, German & Arabic PRICING Choose a monthly or yearly subscription, or a one-time Lifetime purchase with no recurring charges. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings > Apple ID > Subscriptions. Privacy Policy: https://www.binaryandbricks.com/app/privacypolicy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Bimbit

Features
Read full description

Bimbit helps construction teams stay aligned around what is actually happening on site. Capture project progress, revisit the same locations over time, create tasks directly in context, compare changes, and keep conversations connected to the work. With Bimbit, your team can: • Track progress visually across the project • Pin tasks and issues to the exact location where they happened • Compare the same area across different dates • Add project documents and information in context • Collaborate with teammates in real time • Share project views and tasks with stakeholders from any browser • Build a clear visual record for coordination, review, and handover Bimbit is built for construction managers, general contractors, owners, architects, engineers, and project teams that need a faster way to understand what changed, what needs attention, and what happened before. Keep the field and office connected with one shared visual workspace.

Screenshots

Construction Expert A1 PRO4 screens
Bimbit4 screens

Verdict

The call

The clearest difference is in-app purchases: Bimbit at none against Construction Expert A1 PRO's 3. Bimbit also leads on update cadence (daily vs fortnightly). On price, ads, 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

Both are free to download. Construction Expert A1 PRO sells 3 in-app purchases, starting at $2.99 per month. Bimbit asks for nothing beyond the download.

UpkeepUpdate frequency

Construction Expert A1 PRO ships an update fortnightly, Bimbit daily. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
Construction Expert A1 PRO versus Bimbit: the parameters behind the verdict, then further details
ParameterConstruction Expert A1 PROBimbit
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyFortnightlyDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size76 MB259 MB
Age rating4+4+
DeveloperBinary And Bricks Pvt LtdOwlio Inc

In-app purchases

3 purchases

Construction Expert A1 PRO

Subscriptions2
  • Construction Expert Monthly Sub$2.991 Month
  • Construction Expert Yearly$14.991 Year
One-time1
  • Construction Expert Lifetime Access$24.99
None

Bimbit

No in-app purchases

Questions

Is Construction Expert A1 PRO free?
Construction Expert A1 PRO is free to download, with in-app purchases available.
Is Bimbit free?
Bimbit is free to download, with no in-app purchases.
Do Construction Expert A1 PRO or Bimbit have ads?
Neither Construction Expert A1 PRO nor Bimbit shows ads.
Which is updated more often, Construction Expert A1 PRO or Bimbit?
Construction Expert A1 PRO ships an update fortnightly, and Bimbit daily. Most recently, Construction Expert A1 PRO was updated on October 15, 2026 and Bimbit on October 10, 2026.

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