Comparison

Electrical Formulator vs Electrodoc Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • Resistor color code lookup
  • Ohm's Law calculator
  • LED resistor calculator
  • NE555 timer calculator
  • Extensive port pin-out diagrams
  • Electronics reference tables
Features
Read full description

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

Electrical Formulator4 screens
Electrodoc Pro4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Electrical Formulator ships an update every 2 months, Electrodoc Pro every 3 months. Both last shipped on September 26, 2026.

Scorecard8 real differences · 3 level
Electrical Formulator versus Electrodoc Pro: the parameters behind the verdict, then further details
ParameterElectrical FormulatorElectrodoc Pro
PriceFree — better$4.99
Rating5.0 (1 ratings) — better4.6 (62 ratings)
Positive reviews15.6% of reviews75.4% of reviews — better
Number of ratings162 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
Best chart rank—#121 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.411.0 — better
Further details — not scored
Size16 MB25 MB
Age rating4+4+
DeveloperHistorycentral.comIODEMA Srl

Customer experience

Electrical Formulator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews32 reviews
Positive15.6%
Neutral9.4%
Negative75.0%

Electrodoc Pro

All ratings62 ratings
Positive90.3%
Neutral3.2%
Negative6.5%
Written reviews114 reviews
Positive75.4%
Neutral10.5%
Negative14.0%

In-app purchases

1 purchases

Electrical Formulator

One-time1
  • Pro Features For Electrcial$1.99
None

Electrodoc Pro

No in-app purchases

Questions

Is Electrical Formulator free?
Electrical Formulator is free to download, with in-app purchases available.
Is Electrodoc Pro free?
Electrodoc Pro costs $4.99, with no in-app purchases.
Which has better reviews, Electrical Formulator or Electrodoc Pro?
Electrical Formulator is rated higher. Electrical Formulator averages 5.0 out of 5 from 1 ratings, while Electrodoc Pro averages 4.6 from 62 ratings.
Do Electrical Formulator or Electrodoc Pro have ads?
Neither Electrical Formulator nor Electrodoc Pro shows ads.
Which is updated more often, Electrical Formulator or Electrodoc Pro?
Electrical Formulator ships an update every 2 months, and Electrodoc Pro every 3 months. Most recently, Electrical Formulator was updated on September 26, 2026 and Electrodoc Pro on September 26, 2026.

Other comparisons