Electrical Formulator vs Electrodoc Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electrical Formulator
This app provides a comprehensive suite of electrical calculation tools for design and engineering challenges. It offers hundreds of conversion and calculation options, with features to save, print, and email results. Easily access frequently used and recently accessed formulas, with all calculations automatically stored.
- Over 100 electrical formulas
- Save and organize results
- Share results via email or print
- Access most-used and recent formulas
- Supports US/Imperial and metric units
- Formula categories for batteries, motors, transformers, and more
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Electrical Formulator: Your Complete Electrical Calculation Tool Solve virtually any electrical design or engineering challenge with this powerful and intuitive electrical formulator. Packed with hundreds of conversion and calculation tools, it’s the most versatile utility in your toolkit. Save, print, or email your results. Easily access your most-used and recently used formulas. Every calculation is automatically saved for future reference. Key Features: • Instant access to over 100 professional-grade electrical formulas • Save and organize your results for later reference • Share results via email or print • Highlights your most-used and recent formulas • Designed for engineers, electricians, and energy professionals Formula Categories: Batteries • Starting motor amperage • Number of cells required • Estimated operating time Cost Calculations • Appliance and lighting energy usage • Estimated usage hours for new bulbs • Insulation payback period BTU Conversions • BTU to joules, horsepower-hr, watt-hr, calories, foot-pounds, and more Generator Calculations • DC generator output • Generator amperage and efficiency Impedance & Reactance • Resistance & reactance combinations • Inductive and capacitive reactance • Total impedance and parallel circuits Kilowatts & Joules • Convert kilowatts to BTU/hr, joules/sec, lumens, horsepower, megajoules/hr, and more Motors • Single- and three-phase motor calculations • Locked rotor current • Motor kVA (including multiple input scenarios) • Motor speed analysis Ohm’s Law • Calculate for power, voltage, resistance, or current Transformers • Primary and secondary amperage • Full-load transformer sizing (208V, 240V, 480V for single and three-phase) • Impedance and amperage capacity calculations Voltage Drop • Copper and aluminum wire voltage drop (1-phase and 3-phase) • US/Imperial and metric units supported Wiring & Conduits • Wire size and resistance (copper and aluminum) • Wire length calculations • Conduit sizing Whether you’re working in the field, the lab, or the classroom, this electrical formulator helps you work faster, smarter, and with confidence. Users are able to calculate twelve formulas for FREE. Purchase a subscription to calculate additional formulas. All subscriptions come with a 1-WEEK FREE TRIAL and SUPPORT Family Sharing.
Electrodoc Pro
This app is a comprehensive toolkit for electronics enthusiasts and professionals. It offers a wide range of calculators, reference tables, and pin-out diagrams for various electronic components and connectors. Simplify complex calculations and access essential information quickly.
- Resistor color code lookup
- Ohm's Law calculator
- LED resistor calculator
- NE555 timer calculator
- Extensive port pin-out diagrams
- Electronics reference tables
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Electrodoc Pro is a simple and powerful collection of electronics tools and references. Electrodoc is the new app name of Electrodroid. Same app, with the same and even more features. The app includes: • Resistor Color Code; • Lookup Resistor color by value; • SMD Resistor Code; • Inductor Color Code; • Ohm's Law; • Reactance/Resonance; • Filters; • Voltage divider; • Resistor Ratio; • Resistor series/parallel; • Capacitor charge; • Operational Amplifier; • LED Resistor Calculator; • Adjustable voltage regulator; • NE555 Calculator; • Power dissipation; • Battery Life calculator; • Inductor Design Tool; • Voltage Drop Calculator; • PCB Trace Width Calculator; • Power Calculator; • Y-Δ Transformation; • Decibel Converter; • Frequency Converter; • Analog-Digital Converter; • RMS Converter; • Range Converter; • Port pin-out (USB port, Serial port, Parallel port, Ethernet port, Power Over Ethernet, Registered Jack, SCART connector, DVI connector, HDMI connector, Display Port, VGA connector, S-Video connector, VESA Connector, Jack connector, FireWire connector, RCA connector, Audio DIN connector, XLR and DMX, ATX Power connectors, PC peripheral connectors, EIDE/ATA - SATA, PS/2-AT connectors, 25-pair cable color code, Fiber Optic cable color, MIDI connector, MIDI/Game port, Apple 30-pin connector, Apple Lightning connector, PDMI, OBD-II Car connector, Car audio ISO connector, Trailer connectors, SD card pin-out, SIM/Smart card, Raspberry Pi pin-out, LCD pin-out, GPIB/IEEE-488 pin-out, Thermocouples colors, Arduino boards, JTAG pinouts, BeagleBone boards); • Resources (PIC ICSP / AVR ISP, ChipDB (IC pinouts), USB specifications, Resistivity Table, AWG-SWG Wire Size, Ampacity Table, Standard Resistors, Standard Capacitors, Capacitor marking codes, Circuit Schematic symbols, SMD Package Sizes, Symbols and Acronyms, SI Units prefixes, ASCII Table, Boolean Logic gates, 7400 series IC, Switch Information, 78xx IC, Batteries, Coin Batteries, Decibel Table, Radio frequencies, PT100 Conversion Table, Fuses color code, Automotive Fuses colors, DIN 47100 color coding, IP marking, World Plugs & Sockets, IEC Connectors, NEMA connectors); • Full support for EIA resistor series for all calculators; ...and more to come! If you like the program, please rate it on the app store For FAQ and full change-log, visit http://electrodoc.it
Screenshots
Verdict
The clearest difference is review sentiment: Electrodoc Pro at 75% against Electrical Formulator's 16%. Electrodoc Pro also leads on in-app purchases (none vs 1) and ratings volume (62 vs 1). Electrical Formulator's advantage is price (Free vs $4.99) and rating (5.0 vs 4.6). On update cadence, 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
Electrical Formulator is free to download; Electrodoc Pro costs $4.99 up front. Electrical Formulator sells 1 one-off in-app purchase. Electrodoc Pro asks for nothing beyond the download.
Electrical Formulator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Electrodoc Pro has 62 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 16% of Electrical Formulator's written reviews are positive against 75% of Electrodoc Pro's, so the app with the better star average is not the one people write more warmly about.
Electrical Formulator ships an update every 2 months, Electrodoc Pro every 3 months. Both last shipped on September 26, 2026.
| Parameter | Electrical Formulator | Electrodoc Pro |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 5.0 (1 ratings) — better | 4.6 (62 ratings) |
| Positive reviews | 15.6% of reviews | 75.4% of reviews — better |
| Number of ratings | 1 | 62 — better |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Best chart rank | — | #121 — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 16 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Historycentral.com | IODEMA Srl |
Customer experience
Electrical Formulator
Electrodoc Pro
In-app purchases
Electrical Formulator
- Pro Features For Electrcial$1.99
Electrodoc Pro
No in-app purchases
Questions
Is Electrical Formulator free?
Is Electrodoc Pro free?
Which has better reviews, Electrical Formulator or Electrodoc Pro?
Do Electrical Formulator or Electrodoc Pro have ads?
Which is updated more often, Electrical Formulator or Electrodoc Pro?
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