Building Wire Reliability Calc vs FieldVolt Electrical
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Building Wire Reliability Calc
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Upgrade or upsize cables for critical infrastructure applications such as Data Centers, Healthcare Facilities, Wastewater Treatment Plants, Ports & Airports, or any heavily loaded systems.
FieldVolt Electrical
This app assists electricians with complex calculations for pipe bending, conduit fill, ampacity, voltage drop, and box fill. It also offers a professional subscription for expert electrical advice and troubleshooting.
- Pipe bending calculations (offsets, saddles)
- Conduit fill calculations (NEC Table 1)
- Ampacity and wire sizing
- Voltage drop calculations
- Box fill calculations (NEC 314.16)
- Expert electrical advice subscription
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Built by a licensed electrician for work in the field. PIPE BENDING Offsets, 3-bend saddles, 4-bend saddles, rolled offsets, back-to-back 90s, and parallel offsets. Mark placement calculated from the working end. Shrink, gain, spacing — all of it. CONDUIT FILL NEC Table 1 calculations for mixed wire fills. Add conductors, get fill percentage. AMPACITY Wire sizing and derating for ambient temperature, number of current-carrying conductors, and conduit type. VOLTAGE DROP Feeder and branch circuit voltage drop for single-phase and three-phase systems. BOX FILL NEC 314.16 calculations for device, conductor, clamp, and support fitting fill. FIELDVOLT PRO Ask electrical questions, get straight answers. Code interpretation, troubleshooting, load calc logic — the kind of thinking you'd get from someone who's been in the trade for 30 years. 5 free sessions included. Pro subscription available at $4.99/month or $50/year. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Building Wire Reliability Calc at none against FieldVolt Electrical's 2. Building Wire Reliability Calc also leads on update cadence (every 3 weeks vs every 2 months). FieldVolt Electrical's advantage is iOS requirement (13.0 vs 15.0). On price, 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. FieldVolt Electrical sells 2 in-app purchases, starting at $4.99 per month. Building Wire Reliability Calc asks for nothing beyond the download.
Building Wire Reliability Calc ships an update every 3 weeks, FieldVolt Electrical every 2 months. The most recent releases landed on October 11, 2026 and October 12, 2026 respectively.
| Parameter | Building Wire Reliability Calc | FieldVolt Electrical |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Southwire Company | MATTHEW DAVID KOVALIK |
In-app purchases
Building Wire Reliability Calc
No in-app purchases
FieldVolt Electrical
- FieldVolt Pro$4.991 Month
- FieldVolt Pro$49.991 Year
Questions
Is Building Wire Reliability Calc free?
Is FieldVolt Electrical free?
Do Building Wire Reliability Calc or FieldVolt Electrical have ads?
Which is updated more often, Building Wire Reliability Calc or FieldVolt Electrical?
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