E vs Panel Manager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Panel Manager
Streamline electrical panel scheduling directly from your mobile device. Quickly add circuit details, automatically calculate loads, and generate professional PDF reports for permits and inspections. Collaborate with your crew in real-time without needing individual accounts.
- Real-time load calculation
- Automatic space assignment
- 1-phase and 3-phase support
- Crew project sharing
- PDF export for permits
- Compact door label generation
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Panel Manager — Electrical Panel Schedules The fastest way to build and manage electrical panel schedules on the jobsite. No laptop. No paper. Just your phone. PANEL SCHEDULES Add circuits with breaker size, poles, phase, and load. Panel Manager auto-assigns spaces, calculates phase loads, and flags overloads in real time. Supports 1-phase and 3-phase panels. CREW SHARING Create a free account and share any project with your crew using a 6-character code. They download the schedule instantly — no account required to join. PDF EXPORT Export a full-size panel schedule PDF for permits and inspections, or a compact door label for the panel pocket. PANEL MANAGER PRO One-time purchase. Unlimited projects and panels, crew sharing, PDF export with company branding. No subscription. No ads. panelmngr.com
Screenshots
Verdict
The clearest difference is price: Panel Manager at Free against E's $14.99. Panel Manager also leads on iOS requirement (17.6 vs 26.0). E's advantage is in-app purchases (none vs 1) and update cadence (every 2 days vs every 9 days). On rating, ratings volume, 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
Panel Manager is free to download; E costs $14.99 up front. Panel Manager sells 1 one-off in-app purchase. E asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for E against 5.0 for Panel Manager. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
E ships an update every 2 days, Panel Manager every 9 days. The most recent releases landed on September 13, 2026 and September 20, 2026 respectively.
| Parameter | E | Panel Manager |
|---|---|---|
| Price | $14.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.6 — better |
| Further details — not scored | ||
| Size | 52 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | MICHAEL ANTHONY SLOCUM JR |
Customer experience
E
Panel Manager
In-app purchases
E
No in-app purchases
Panel Manager
- Panel Manager Pro$9.99
