Comparison

Construction Calc Lite vs Phase Calc

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

Head to head
About

Construction Calc Lite

A specialized calculator for construction professionals and anyone working with measurements in feet and inches. Perform complex calculations, scale drawings, and determine angles and material quantities with ease. Features include fractional inch support, history recall, and customizable rounding.

Highlights
  • Feet, inch, and fractional inch calculations
  • Drawing scaling
  • Miter and triangle angle calculations
  • Material quantity and cost estimation
  • Fraction reduction
  • History list for value reuse
  • Customizable rounding precision
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

Phase Calc

This advanced engineering app performs complex electrical calculations for three-phase power systems. It offers tools for students, technicians, and engineers to analyze unbalanced systems, perform sequence transformations, and access reference libraries. Results can be easily exported for documentation and sharing.

Highlights
  • Symmetrical component analysis
  • Three-phase power system calculations
  • Phase-to-sequence and sequence-to-phase transformations
  • Polar and rectangular input support
  • Specialized calculators and reference libraries
  • Exportable results for documentation
Features
Read full description

Phase Calc for iOS is an advanced engineering app for most electrical designs, expecially symmetrical component analysis and three-phase power system calculations. Built for students, teachers, technicians, and engineers, it combines a polished mobile experience with a powerful technical workflow for fast, accurate analysis of unbalanced three-phase systems in the field, lab, or classroom. The app performs both phase-to-sequence and sequence-to-phase transformations, with support for inputs in polar and rectangular form. It quickly resolves three unbalanced phase quantities into their positive-, negative-, and zero-sequence components, making it a practical tool for protection studies, fault analysis, system modeling, relay validation, and coursework. More than a single-purpose calculator, Phase Calc is packed with specialized calculators, technical reference libraries, and built-in formulas to support everyday power systems work. Whether you are checking values, reviewing theory, or working through engineering problems more efficiently, the app puts essential tools in one place. Results can be exported instantly, including vector data for plotting and graphical analysis, as well as technical report exports for documentation, review, and sharing. With powerful capabilities in a streamlined interface, Phase Calc delivers a complete mobile toolkit for three-phase analysis on iPhone and iPad.

Screenshots

Construction Calc Lite4 screens
Phase Calc4 screens

Verdict

The call

The clearest difference is review sentiment: Phase Calc at 100% against Construction Calc Lite's 54%. Phase Calc also leads on ads (none vs shown) and rating (5.0 vs 4.6). Construction Calc Lite's advantage is price (Free vs $1.99) and ratings volume (136 vs 4). On update cadence, 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

Construction Calc Lite is free to download; Phase Calc costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Phase Calc holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Construction Calc Lite has 136 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 54% of Construction Calc Lite's written reviews are positive against 100% of Phase Calc's.

UpkeepUpdate frequency

Construction Calc Lite ships an update every 2 months, Phase Calc every 6 weeks. The most recent releases landed on September 26, 2026 and August 1, 2026 respectively.

Scorecard7 real differences · 3 level
Construction Calc Lite versus Phase Calc: the parameters behind the verdict, then further details
ParameterConstruction Calc LitePhase Calc
PriceFree — better$1.99
Rating4.6 (136 ratings)5.0 (4 ratings) — better
Positive reviews53.6% of reviews100.0% of reviews — better
Number of ratings136 — better4
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supported — betterPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size31 MB13 MB
Age rating4+4+
DeveloperSnappy Appz Inc.Donnie Herman

Customer experience

Construction Calc Lite

All ratings136 ratings
Positive89.7%
Neutral2.2%
Negative8.1%
Written reviews28 reviews
Positive53.6%
Neutral14.3%
Negative32.1%

Phase Calc

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Construction Calc Lite

No in-app purchases

None

Phase Calc

No in-app purchases

Questions

Is Construction Calc Lite free?
Construction Calc Lite is free to download, with no in-app purchases.
Is Phase Calc free?
Phase Calc costs $1.99, with no in-app purchases.
Which has better reviews, Construction Calc Lite or Phase Calc?
Phase Calc is rated higher. Construction Calc Lite averages 4.6 out of 5 from 136 ratings, while Phase Calc averages 5.0 from 4 ratings.
Do Construction Calc Lite or Phase Calc have ads?
Construction Calc Lite shows ads; Phase Calc does not.
Which is updated more often, Construction Calc Lite or Phase Calc?
Construction Calc Lite ships an update every 2 months, and Phase Calc every 6 weeks. Most recently, Construction Calc Lite was updated on September 26, 2026 and Phase Calc on August 1, 2026.

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