Voltage Drop Pro vs Conduit Fill
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Voltage Drop Pro
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Voltage Drop Calc is a fast, easy way to create a schedule of voltage drop calculations for any size of job or just to perform a single calculation on the fly. Put your pencil down and start making professional, consistent calculation today. - Universal app allows use on both iPad, and iPhone/iPod with single purchase. - Create an unlimited list of calculations that automatically save. - Export your results to a spreadsheet for formatting or printing. - Solve for distance in feet or meters. - Solve for voltage drop in either voltage or percentage. - Solve for wire size including derating. - Built in construction calculator allows intermediate calculations to be performed within the app.
Conduit Fill
This app helps electricians quickly calculate conduit fill based on the latest NEC or CEC codes. Easily add various wire types and quantities to determine the minimum required conduit size.
- NEC and CEC code calculations
- Support for up to 1000 wires
- Select from different wire types
- Instant calculation for all conduit sizes
- Minimized display for most common sizes
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Quickly calculate a conduit fill according to the latest NEC or CEC. Simply add your wires and get all minimum conduit sizes. A streamlined app to help calculate conduit fill. The following features are included: - USA (NEC) or Canada (CEC) latest code calculations - add up to 1000 wires and select from all different types - instant calculation for all conduit sizes (most used 3 are minimized)
Screenshots
Verdict
The clearest difference is update cadence: Voltage Drop Pro at every 2 months against Conduit Fill's every 5 months. Voltage Drop Pro also leads on price ($3.99 vs $4.99). Conduit Fill's advantage is device support (4 vs 2) and iOS requirement (12.0 vs 17.5). On ads and in-app purchases 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
Voltage Drop Pro costs $3.99 and Conduit Fill $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Voltage Drop Pro ships an update every 2 months, Conduit Fill every 5 months. The most recent releases landed on July 9, 2026 and September 6, 2026 respectively.
| Parameter | Voltage Drop Pro | Conduit Fill |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | — | 3.3 (3 ratings) — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Snappy Appz Inc. | Martin Loch |
In-app purchases
Voltage Drop Pro
No in-app purchases
Conduit Fill
No in-app purchases
Questions
Is Voltage Drop Pro free?
Is Conduit Fill free?
Do Voltage Drop Pro or Conduit Fill have ads?
Which is updated more often, Voltage Drop Pro or Conduit Fill?
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