Comparison

Construction Calculator A1 Pro vs Reminders.AI

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 Pro

This app provides specialized calculators for construction professionals, including concrete, rebar, and area/volume calculations. It helps estimate material quantities, steel tonnage, and perform complex measurements with ease. Users can also generate Bills of Quantities and export reports for clients.

Highlights
  • Concrete quantity estimation
  • Rebar bending schedule (BBS)
  • Feet-inches calculator
  • Area and volume calculations
  • Bill of Quantities (BOQ) export
  • Project organization and sharing
Features
Read full description

Trusted by 1M+ contractors, builders and engineers worldwide. Construction Calculator A1 Pro is a complete civil engineering toolkit for engineers, contractors, architects, site supervisors, quantity surveyors (QS) and real estate professionals. 500+ calculators take you from material estimation and RCC design all the way to a client-ready Bill of Quantities - on your iPhone, iPad and Apple Watch. EVERYTHING UNLOCKED, NO ADS - No advertising anywhere in the app - Unlimited calculations - no daily cap - Every calculator unlocked, including Draw Shape, GPS Area and the specialist trade tools - Unlimited favourites, recents and custom formulas - Cloud sync across your devices, included - One purchase. No subscriptions, no in-app purchases. IDEAL FOR - Civil Engineers & Contractors - RCC, beam, column, footing & reinforcement - Quantity Surveyors & Estimators - Fast, accurate material take-offs - Site Supervisors & Project Managers - On-site calculations and costing - Architects & Builders - Area, volume and design measurements - DIY Home Builders & Real Estate Professionals - Land and plot area NEW - BILL OF QUANTITIES (BOQ) - Add any calculation result straight to a BOQ - Organise work by project, track total value and % priced - Professional BOQ report with your company header and signature - Export as PDF or Excel and send to clients NEW - AUTOMATIC DRAWINGS - Calculators generate a dimensioned drawing of what you entered - Brickwork, steel/BBS shapes, concrete sections, excavation, stairs and more - Drawings and a DIMENSIONS/QUANTITIES panel in every PDF report NEW - MATERIAL PRICE LIBRARY - Store your own material rates in your own currency - Rates auto-fill into cost fields across the app - Six regional presets with local materials and units NEW - APPLE WATCH APP - Converter, material weight, volume, diagonal and rebar on your wrist - Prices synced from your iPhone, with full calculation history NEW - LEARN: STUDY & QUIZ - Civil engineering articles, checklists and reference charts - Topic quizzes with instant explanations - Daily streaks, XP, stars and achievement badges QUANTITY CALCULATORS - Concrete - slab, beam, column, footing, staircase, retaining wall, culvert - Steel & BBS - reinforcement weight, cutting length, bar bending schedules - Brick, Block & Plaster - walls, bonds, arches, AAC/CLC blocks - Flooring, Tile & Plywood - Paint - litres/gallons with coats and coverage - Water Tank - rectangular, cylindrical, spherical, capsule and more - Excavation & Backfill, Anti-Termite, Shuttering, Plum Concrete - Roofing - area, pitch, rafter length, gable and flat roofs - Infrastructure - road, rail, dam, sewage, water supply - Specialist trade tools - drywall, deck stain, vinyl fence, ladder angle and length, man-hours, arch - Construction Cost Estimator with breakdown charts and client quotations AREA & VOLUME - Plot area, rectangle, square, triangle, circle, trapezoid, polygons - Cube, cone, cylinder, sphere, prism, pyramid, frustum and more - Draw Shape and GPS Area for irregular plots UNIT CONVERTER - Length, area, volume, weight, pressure, power, speed, time, fuel, angle, density - Feet-inch-fraction construction calculator with a running tape SAVE, SHARE & SYNC - Save calculations, add notes and photos, organise in folders - Export PDF and Excel reports with your company logo and signature - iCloud and Google Drive backup - Cloud sync across all your devices WHY CHOOSE CONSTRUCTION CALCULATOR A1 PRO - Metric & Imperial - switch instantly in any calculator - Works offline - calculations need no internet - 16 languages - Light and dark themes - Home Screen widgets and Quick Actions - Clean interface built for the jobsite NEED HELP OR HAVE SUGGESTIONS? We value your feedback. Contact constructioncalculatorallinone@gmail.com for support or feature requests.

About

Reminders.AI

Effortlessly generate thoughtful gift ideas and discover ideal party locations for all your special occasions. Never forget a birthday, holiday, or anniversary again with intelligent suggestions.

Highlights
  • AI-generated gift ideas
  • Party location suggestions
  • Event reminders (birthdays, holidays, anniversaries)
  • Subscription for unlimited features
  • Manage auto-renew settings
Features
Read full description

Easily generate gift ideas and party locations for Birthdays, Holidays and Anniversaries. Reminders.AI subscription for unlimited reminders with gift ideas: Reminders.AI plans: Monthly: $24.99 Annual: $239.99 Payments and Renewal: - Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period. - You can manage or turn off auto-renew in your Account settings at any time after purchase. - No cancellation of the current subscription is allowed during the active period. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://sentrixlabs.com/privacy-policy/

Screenshots

Construction Calculator A1 Pro4 screens
Reminders.AI4 screens

Verdict

The call

The clearest difference is price: Reminders.AI at Free against Construction Calculator A1 Pro's $39.99. Reminders.AI also leads on rating (5.0 vs 4.1) and iOS requirement (13.0 vs 15.0). Construction Calculator A1 Pro's advantage is in-app purchases (none vs 2) and ratings volume (8 vs 1). On update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Reminders.AI is free to download; Construction Calculator A1 Pro costs $39.99 up front. Reminders.AI sells 2 in-app purchases, starting at $24.99 per month. Construction Calculator A1 Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Reminders.AI holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Construction Calculator A1 Pro has 8 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
Construction Calculator A1 Pro versus Reminders.AI: the parameters behind the verdict, then further details
ParameterConstruction Calculator A1 ProReminders.AI
Price$39.99Free — better
Rating4.1 (8 ratings)5.0 (1 ratings) — better
Positive reviews76.9% of reviews—
Number of ratings8 — better1
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size126 MB46 MB
Age rating4+4+
DeveloperBinary And Bricks Pvt LtdSentrix Inc.

Customer experience

Construction Calculator A1 Pro

All ratings8 ratings
Positive75.0%
Neutral12.5%
Negative12.5%
Written reviews13 reviews
Positive76.9%
Neutral7.7%
Negative15.4%

Reminders.AI

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Construction Calculator A1 Pro

No in-app purchases

2 purchases

Reminders.AI

Subscriptions2
  • Monthly subscription$24.991 Month
  • Annual Subscription$239.991 Year

Questions

Is Construction Calculator A1 Pro free?
Construction Calculator A1 Pro costs $39.99, with no in-app purchases.
Is Reminders.AI free?
Reminders.AI is free to download, with in-app purchases available.
Which has better reviews, Construction Calculator A1 Pro or Reminders.AI?
Reminders.AI is rated higher. Construction Calculator A1 Pro averages 4.1 out of 5 from 8 ratings, while Reminders.AI averages 5.0 from 1 ratings.
Do Construction Calculator A1 Pro or Reminders.AI have ads?
Neither Construction Calculator A1 Pro nor Reminders.AI shows ads.
Which is updated more often, Construction Calculator A1 Pro or Reminders.AI?
Construction Calculator A1 Pro ships an update monthly, and Reminders.AI monthly. Most recently, Construction Calculator A1 Pro was updated on October 30, 2026 and Reminders.AI on October 24, 2026.

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