Construction Calc Lite vs Phase Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Construction Calc Lite | Phase Calc |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.6 (136 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 53.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 136 — better | 4 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | Donnie Herman |
Customer experience
Construction Calc Lite
Phase Calc
In-app purchases
Construction Calc Lite
No in-app purchases
Phase Calc
No in-app purchases
Questions
Is Construction Calc Lite free?
Is Phase Calc free?
Which has better reviews, Construction Calc Lite or Phase Calc?
Do Construction Calc Lite or Phase Calc have ads?
Which is updated more often, Construction Calc Lite or Phase Calc?
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