Electric Toolkit vs Simple Circuit Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electric Toolkit
This app provides a comprehensive collection of electrical wiring diagrams and calculators for home projects. It includes various switch and fan wiring configurations, outlet diagrams, and essential calculators for grounding, circuit breakers, and voltage drop, adhering to NEC standards.
- 3-way switch wiring diagrams
- Ceiling fan wiring diagrams
- GFCI wiring diagrams
- Grounding conductor size calculator
- Ohms Law calculator
- Circuit breaker sizing calculator
- Voltage drop calculator
- Audio/Video cable pinouts
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Electric Toolkit is an easy to use collection of electrical wiring diagrams, pinouts, and electrical calculators for home wiring projects. The Electric Toolkit includes: *Seven different 3-way switch wiring diagrams *Seven different Ceiling Fan wiring diagrams *Basic light switch wiring diagrams *4-way switching wiring diagrams *Exhaust/bathroom fan wiring diagrams *Multiple GFCI wiring diagrams *Wall outlet wiring diagram *Grounding conductor size calculator (NEC 2014 through NEC 2023, Table 250-122) *Ohms Law calculator *Sizing a Circuit Breaker calculator (NEC 2023, NEC 2020, NEC 2017, and NEC 2014, 240-6(a)) *Voltage drop calculator *AWG to mm/mm² calculator *Audio/Video Cable pinouts ( Component, DisplayPort, DVI, Ethernet, Firewire, HDMI/Mini HDMI/Micro HDMI, Lightning, LPT(parallel port), PS/2, RCA, Serial port, S-video, USB 3.0/Mini USB/Micro USB/USB-C, and VGA). If you have any suggestions, find bugs, or have any requests, feel free to email them to: techsupport@cyberprodigy.com
Simple Circuit Builder
This virtual lab offers a hands-on experience for learning about resistors and circuit resistance. Easily build and test series and parallel circuits, measure voltage and current, and understand the impact of component changes in real-time.
- Build circuits with up to eight components
- Five component types
- Virtual volt and amp meters
- Adjustable resistor and voltage values
- Real-time circuit analysis
- Demonstrates 'Opens' and 'Shorts'
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Description This is the BEST app to learn about Resistors and Circuit Resistance (Equivalent Resistance). This virtual lab provides an excellent environment for anyone who is interested in understanding series and parallel resistors, learning how to measure voltages across resistors, current through series and parallel circuits and solving simple circuits. Features - VERY SIMPLE and EASY TO USE, with up to eight component sections. - Component sections can easily be configured from five different types. - VIRTUAL "Hands On" experience using volt and amp meters. - Resistor values can easily be changed with a picker, keypad or using randomize button. - Circuit voltage can easily be changed from 1 to 1000 volts with a picker or a keypad. - The "Basics" screen make this app unique for the simplicity and speed of seeing the effects of "Opens" (resistor component with infinite resistance) and "Shorts" (resistor component with zero resistance). - FREE and NO ADVERTISEMENTS. - The circuit is always "LIVE" and immediately shows voltage, current and circuit resistance with any changes made to the circuit.
Screenshots
Verdict
The clearest difference is price: Simple Circuit Builder at Free against Electric Toolkit's $5.99. Simple Circuit Builder also leads on update cadence (every 3 weeks vs every 9 months). Electric Toolkit's advantage is rating (4.8 vs 4.0) and ratings volume (288 vs 28). On review sentiment, 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
Simple Circuit Builder is free to download; Electric Toolkit costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Electric Toolkit holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Electric Toolkit has 288 ratings behind it against 28, so its average is the more settled of the two. Written reviews complicate that: 45% of Electric Toolkit's written reviews are positive against 53% of Simple Circuit Builder's, so the app with the better star average is not the one people write more warmly about.
Electric Toolkit ships an update every 9 months, Simple Circuit Builder every 3 weeks. The most recent releases landed on October 18, 2026 and October 1, 2026 respectively.
| Parameter | Electric Toolkit | Simple Circuit Builder |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.8 (288 ratings) — better | 4.0 (28 ratings) |
| Positive reviews | 45.2% of reviews | 52.6% of reviews — better |
| Number of ratings | 288 — better | 28 |
| Update frequency | Every 9 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Cyberprodigy LLC | David White |
Customer experience
Electric Toolkit
Simple Circuit Builder
Bugs and requests
Electric Toolkit
Reported bugs
3 issues- Voltage drop calculator stopped working
- Calculators have non-functional features (delete key, zero, decimal point)
- Incorrect label for 'Circuit Length' in voltage drop calculator
Requested features
7 requests- More diagrams and schematics
- Ability to create wiring diagrams
- Option to pick installation and auto-layout wiring
- More info about house wiring and residential electrical wiring
- Ability to make printouts
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- App to be written for CSA (UK cable sizes)
- More detailed information on breaker circuits
Simple Circuit Builder
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Electric Toolkit
No in-app purchases
Simple Circuit Builder
No in-app purchases
Questions
Is Electric Toolkit free?
Is Simple Circuit Builder free?
Which has better reviews, Electric Toolkit or Simple Circuit Builder?
Do Electric Toolkit or Simple Circuit Builder have ads?
Which is updated more often, Electric Toolkit or Simple Circuit Builder?
Other comparisons
