EV Calc Pro vs Conduit Fill Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EV Calc Pro
This professional-grade electrical calculator assists EV charger installers and electricians with accurate, NEC-compliant calculations. It offers multiple specialized calculators for load analysis, wire sizing, voltage drop, and more, all accessible offline.
- EV Charger Load Calculator
- EV Site Load Calculator
- Wire Size Calculator
- Voltage Drop Analysis
- Breaker Sizing
- Offline functionality
- NEC code references
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EV Calc Pro is the professional-grade electrical calculator built specifically for EV charger installers and electricians. Stop doing math on paper — get accurate, NEC-compliant results in seconds. CALCULATORS INCLUDED: EV Charger Load — Complete circuit analysis for EV charger installations EV Site Load — Full service load calculation for multi-charger sites (NEC 220, 625) Wire Size — NEC conductor sizing with temperature and conduit corrections Voltage Drop — Voltage drop analysis with pass/fail results Breaker Sizing — Overcurrent protection sizing per NEC Transformer Sizing — kVA transformer sizing for EV service upgrades Conduit Fill — NEC 358/344 conduit fill percentage calculator Grounding Conductor — Equipment grounding conductor sizing Ampacity Derating — Temperature and conduit fill derating per NEC 310 Box Fill — NEC 314.16 box fill calculation Power Calculator — Watts, amps, and volts conversion WHY EV CALC PRO: • Built for the field — fast inputs, instant results • 100% offline — no internet required, works on job sites • NEC code references on every calculator • Dark mode for working in low-light conditions • Export and share results via text, email, or any app • Free — no subscription, no paywalls Part of the Charge Rigs family of tools for EV charging professionals.
Conduit Fill Pro
This app provides professional electricians with a suite of tools for electrical calculations, including conduit fill, junction box fill, and voltage drop. It offers detailed breakdowns, code references, and offline functionality for job site reliability. Generate PDF reports for documentation and inspections.
- Conduit fill calculations for various types and sizes
- Junction box fill analysis
- Voltage drop calculator
- Step-by-step breakdowns with formulas and code references
- Built-in reference tables
- Offline functionality
- PDF report generation
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All your electrical calculations in one place — fast, accurate, and code-compliant. ConduitFill Pro is a professional electrician's calculator built for modern electrical work. Every result includes formulas, steps, and code references, so you can verify the work with confidence. Used by apprentices, journeymen, master electricians, and inspectors. Conduit Fill Calculator supports EMT, IMC, RMC, PVC (Sch 40/80), ENT, FMC, and LFMC across 10 trade sizes and multiple insulation types including THHN, XHHW, RHH, THW, and USE-2. Verifies against standard fill limits (53% / 31% / 40%) and includes Nipple Mode for 60% fill on runs under 24 inches. Find Minimum Conduit Size by entering wire count and gauge to instantly get the smallest compliant conduit for your installation. Junction Box Fill calculates conductors, clamps, devices, equipment grounding conductors, and fixture studs and hickeys. Voltage Drop Calculator supports single-phase and three-phase systems, copper and aluminum conductors, and automatically determines minimum wire size. Easily check voltage drop for conductors from your conduit fill calculation. Every calculation includes a full step-by-step breakdown with formulas and values — no black box. You see exactly how results are calculated. Built-in reference tables cover conduit fill percentages, conduit areas, conductor areas, ampacity ratings, and box fill rules. All data aligns with current industry standards. Generate clean PDF reports with inputs, formulas, references, and timestamps — ready for inspections and project documentation. Works fully offline with all reference data stored locally. No internet required, making it reliable on job sites, basements, and panel rooms. Conduit Fill Pro is built for real-world electrical work — fast, transparent, and reliable Privacy Policy: https://docs.nikitin.fyi/com.conduitfill.calculator/privacy-policy.html Terms of Service: https://docs.nikitin.fyi/com.conduitfill.calculator/terms-of-service.html
Screenshots
Verdict
The clearest difference is rating: EV Calc Pro at 5.0 against Conduit Fill Pro's 3.7. EV Calc Pro also leads on in-app purchases (none vs 2) and iOS requirement (15.1 vs 18.0). Conduit Fill Pro's advantage is ratings volume (3 vs 1). On price, review sentiment, 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
Both are free to download. Conduit Fill Pro sells 2 in-app purchases, starting at $4.99 per month. EV Calc Pro asks for nothing beyond the download.
EV Calc Pro holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
| Parameter | EV Calc Pro | Conduit Fill Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 62 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Charge Rigs, LLC | Mikhail Nikitin |
Customer experience
EV Calc Pro
Conduit Fill Pro
In-app purchases
EV Calc Pro
No in-app purchases
Conduit Fill Pro
- premium$4.991 Month
- premium7 Days trial$29.991 Year
Questions
Is EV Calc Pro free?
Is Conduit Fill Pro free?
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