Circuit Wizard vs SIMpull 600V Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Circuit Wizard
This app assists electricians and enthusiasts in calculating wire sizes for installations based on ABYC and Blue Sea Systems specifications. It also helps find suitable protective products for circuits. The application functions completely offline.
- Wire sizing calculation
- ABYC and Blue Sea Systems specifications
- Product search for circuit protection
- Offline functionality
- Electrical installation reference
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Circuit Wizard is designed to help electricians and enthusiasts determine wire sizing for a given installation based upon specific parameters using ABYC and Blue Sea Systems specifications. Once a wire size is known you can then use that information to search for products offered by Blue Sea Systems in order to protect your circuit. Based upon the popular web application located at http://cw.bluesea.com/, this version is designed to be run completely offline which should be useful in situations where an internet connected computer is not available.
SIMpull 600V Calculator
This app offers multiple calculators for electrical calculations, all linked by wire pull characteristics. It generates NEC® compliant answers for voltage drop, ground wire sizing, ampacity adjustments, and more. Results can be easily emailed.
- Voltage Drop Calculator
- Ground Wire Sizing
- Ampacity Adjustments
- Phase Wire Attributes
- Sidewall Tension/Pressure
- Reel Sizing
- NEC® Compliant Answers
- Email Results
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The SIMpull 600V Calculator provides multiple calculators within a single app that are connected by specific wire pull characteristics (i.e. Voltage Drop, Ground Wire Sizing, Ampacity Adjustments, Phase Wire Attributes, Sidewall Tension/ Pressure and Reel Sizing) and generates individual NEC® compliant answers. Results are easily emailed.
Screenshots
Verdict
The clearest difference is rating: SIMpull 600V Calculator at 4.2 against Circuit Wizard's 3.1. SIMpull 600V Calculator also leads on review sentiment (75% vs 40%) and update cadence (every 3 months vs every 12 months). Circuit Wizard's advantage is iOS requirement (7.1 vs 16.6). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
SIMpull 600V Calculator holds the better App Store score, 4.2 against 3.1. Both are backed by a comparable volume of ratings — 19 and 59 respectively. Written reviews point the same way: 40% of Circuit Wizard's written reviews are positive against 75% of SIMpull 600V Calculator's.
Circuit Wizard ships an update every 12 months, SIMpull 600V Calculator every 3 months. Both last shipped on October 23, 2026.
| Parameter | Circuit Wizard | SIMpull 600V Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (19 ratings) | 4.2 (59 ratings) — better |
| Positive reviews | 40.0% of reviews | 75.0% of reviews — better |
| Number of ratings | 19 | 59 — better |
| Update frequency | Every 12 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 7.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 4 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Sea Systems, Inc. | Southwire Company |
Customer experience
Circuit Wizard
SIMpull 600V Calculator
In-app purchases
Circuit Wizard
No in-app purchases
SIMpull 600V Calculator
No in-app purchases
