Comparison

E vs Deck Calculator Pro

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

Head to head
About

E

This app provides electricians and engineers with instant, code-compliant calculations for wire sizing, conduit capacities, fusing, and bonding based on the 2026 National Electrical Code. It offers advanced tools for motors, transformers, voltage drop, and box fill, along with on-site utilities like panel legends and torque settings.

Highlights
  • NEC 2026 compliant calculations
  • Wire sizing and ampacity
  • Conduit fill and expansion
  • Motor and transformer calculations
  • Voltage drop and box fill
  • Panel legends and torque settings
  • Integrated unit converter and Ohm's Law
Features
Read full description

E-Calc USA 2026: The Ultimate NEC Companion Stop flipping through code books and start calculating with precision. E-Calc USA 2026 is the definitive electrical resource for professionals who demand more than just simple formulas. Designed specifically for electricians, engineers, and contractors, this app provides instant, accurate results based on the 2026 National Electrical Code (NEC). While other apps stop at basic math, E-Calc USA handles the heavy lifting—delivering code-compliant wire sizing, conduit capacities, fusing, and bonding requirements in seconds. Professional Features for the Field Advanced Motor & Transformer Tools Motor Loads: Get instant results for maximum overcurrent, overload protection, minimum wire size, conduit size, and bond wire requirements. Transformers: Calculate FLA, pipe size, fuse/breaker ratings, and bond sizing for both primary and secondary systems. Precision Wire & Conduit Sizing Ampacity & Derating: Calculate allowable ampacity for any wire type or complex derating scenario. Conduit Fill: Quickly find the maximum number of similar-sized wires for any given pipe. Expansion & Spacing: Calculate linear expansion for conduits and required strap spacing. Complex Calculations Made Simple Voltage Drop: Solve complicated runs easily. Get results for percentage drop, maximum run lengths, and wire sizing, with full support for derating. Box Fill: Accurate calculations in both mL and cubic inches. On-Site Utilities & Reference Panel Legends: Create custom, professional panel legends and print them directly to scale. Torque Settings: Access recommended torque settings for a wide variety of lugs and terminations. NEMA Reference: Quickly find NEMA codes and receptacle specifications. Built for Your Workflow Save & Share: Every calculation is saved and can be printed or shared with your team or inspectors. Universal Access: Buy once and run E-Calc USA on your iPhone, iPad, and Mac. Integrated Tools: Includes a comprehensive unit converter, Ohm’s Law calculator, and voltage unbalance tool. Whether you are in the office designing a system or on-site during an inspection, E-Calc USA ensures you have the power of the National Electrical Code right in your pocket. Download E-Calc USA today and work smarter.

About

Deck Calculator Pro

Features
Read full description

Plan and build your dream deck with confidence! Deck Calculator Pro is the complete material estimator for DIY homeowners and professional contractors alike. CALCULATE ALL YOUR MATERIALS IN SECONDS Simply enter your deck dimensions and instantly get accurate quantities for: • Deck boards - with size recommendations • Joists - including rim joists • Posts - properly spaced for your design • Beams - with linear footage calculations Unlike other deck calculators that only estimate flooring, our app calculates your ENTIRE deck frame - everything you need from foundation to finish. ADVANCED CUSTOMIZATION Fine-tune your project with adjustable parameters: • Joist spacing (12", 16", or 24" on center) • Board width options • Post spacing for proper support • Material sizes based on your deck dimensions FEATURES EVERYONE LOVES • Clean, intuitive interface • Real-time calculations as you adjust • Works completely offline • No account required • Haptic feedback for satisfying interactions --- PRO FEATURES - Unlock the Full Experience COST ESTIMATION Enter your local material prices and get instant budget calculations: • Per-item cost breakdown (boards, joists, posts, beams) • Total project cost estimate • Adjust prices anytime as costs change DECK VISUALIZATION See your deck come to life with a scaled 2D preview showing: • Board layout and spacing • Joist placement • Post positions • Beam locations • Color-coded legend for easy reference SAVE UNLIMITED PROJECTS • Save multiple deck designs • Load previous projects instantly • Perfect for comparing options or managing multiple jobs SHARE WITH CONTRACTORS • Export your complete material list • Share via Messages, Email, or any app • Professional format ready for quotes --- PERFECT FOR: • DIY homeowners planning a new deck • Contractors estimating materials for bids • Home improvement enthusiasts • Anyone renovating their outdoor living space SUPPORTED DECK TYPES: • Pressure-treated lumber decks • Composite decking (Trex, TimberTech, etc.) • Cedar and redwood decks • Ground-level and elevated designs • Attached and freestanding decks --- WHY DECK CALCULATOR PRO? Most deck calculators only tell you how many deck boards you need. That's just the surface - literally! Your deck's structural integrity depends on properly calculated joists, posts, and beams. We built this app because we couldn't find a simple, accurate tool that calculated ALL deck components. No complicated software, no overwhelming features - just the essential calculations you need to plan your project right. Whether you're a weekend warrior tackling your first deck or a seasoned contractor running multiple jobs, Deck Calculator Pro gives you the numbers you need to build with confidence. --- Download now and start planning your perfect outdoor space! Questions or feedback? We'd love to hear from you. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdfula/

Screenshots

E4 screens
Deck Calculator Pro4 screens

Verdict

The call

The clearest difference is price: Deck Calculator Pro at Free against E's $14.99. Deck Calculator Pro also leads on iOS requirement (17.0 vs 26.0). E's advantage is in-app purchases (none vs 2). On ads 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

Deck Calculator Pro is free to download; E costs $14.99 up front. Deck Calculator Pro sells 2 in-app purchases, starting at $1.99 per month. E asks for nothing beyond the download.

Scorecard3 real differences · 7 level
E versus Deck Calculator Pro: the parameters behind the verdict, then further details
ParameterEDeck Calculator Pro
Price$14.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 — better
Further details — not scored
Size52 MB1 MB
Age rating4+4+
DeveloperSnappy Appz Inc.RYAN KIM

In-app purchases

None

E

No in-app purchases

2 purchases

Deck Calculator Pro

Subscriptions1
  • Pro Monthly$1.991 Month
One-time1
  • Pro Lifetime$1.99

Questions

Is E free?
E costs $14.99, with no in-app purchases.
Is Deck Calculator Pro free?
Deck Calculator Pro is free to download, with in-app purchases available.
Do E or Deck Calculator Pro have ads?
Neither E nor Deck Calculator Pro shows ads.

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