Comparison

Construction Calc vs Locky Smart Lock

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

Head to head
About

Construction Calc

Features
Read full description

Designed by tradespeople, for tradespeople. Construction Calc Lite handles the heavy lifting of jobsite math—fractions, dimensional conversions, framing, and layout—so you can focus on the build. Whether you're a carpenter, concrete finisher, framer, superintendent, or DIYer, Construction Calc Lite delivers fast, accurate jobsite calculations with zero guesswork. WHY TRADES CHOOSE CONSTRUCTION CALC • True Feet-Inch-Fraction Math: Add, subtract, multiply, and divide in full dimensional fractions down to 1/16th (or user-set precision) with automatic reduction. • Seamless Unit Switching: Effortlessly mix Imperial and Metric. Convert feet-inch-fractions to meters, centimeters, or millimeters in a single tap. • Split-Screen Display: View decimal values, feet/inch fractions, memory registers, and scale factors simultaneously in large, high-visibility text. • Visual Cut & Layout Solvers: Dedicated modules for right triangles, miters, arcs, and baluster spacing complete with clear visual diagrams. • 50 Memory Registers & Full History: Never lose a cut list or measurement. Easily recall previous calculations on the fly. DEDICATED MODULES FOR EVERY TRADE • Framing & Layout: Calculate stud, fence post, and baluster spacing (horizontal, angled, or circular). • Miters & Trim: Visual miter and bevel angle calculator for crown molding and finish carpentry. • Geometry & Stairs: Instant solutions for right triangles, diagonals, rafter lengths, arcs, and chords. • Concrete, Volume & Area: Quickly calculate slab volume, footings, room square footage, and block/tank capacities. • Materials & Coverage: Estimate drywall sheets, tile, paint, and material costs with built-in waste allowances. • Smart Blueprint Scaling: Instantly scale plan drawings up or down to true field dimensions. BUILT FOR THE JOBSITE • High-Contrast Display: Large, legible fonts engineered for bright outdoor sunlight or dark crawl spaces. • Works 100% Offline: No cell service required on remote sites.

About

Locky Smart Lock

Features
Read full description

You can easily manage and configure your door locks from anywhere

Screenshots

Construction Calc4 screens
Locky Smart Lock3 screens

Verdict

The call

The clearest difference is price: Locky Smart Lock at Free against Construction Calc's $7.99. Locky Smart Lock also leads on iOS requirement (13.0 vs 26.0). On ads, in-app purchases and device support 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

Locky Smart Lock is free to download; Construction Calc costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 4 level
Construction Calc versus Locky Smart Lock: the parameters behind the verdict, then further details
ParameterConstruction CalcLocky Smart Lock
Price$7.99Free — better
Update frequencyWeekly—
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPod, Apple Watch — better
Requires iOS26.013.0 — better
Further details — not scored
Size27 MB341 MB
Age rating4+4+
DeveloperSnappy Appz Inc.BT Security

In-app purchases

None

Construction Calc

No in-app purchases

None

Locky Smart Lock

No in-app purchases

Questions

Is Construction Calc free?
Construction Calc costs $7.99, with no in-app purchases.
Is Locky Smart Lock free?
Locky Smart Lock is free to download, with no in-app purchases.
Do Construction Calc or Locky Smart Lock have ads?
Neither Construction Calc nor Locky Smart Lock shows ads.

Other comparisons