Comparison

Electronic Formulator vs Electronics Toolkit calc

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

Head to head
About

Electronic Formulator

Features
Read full description

Electronic Engineer puts over 1,100 formulas and 24 reference tables in your pocket. No internet required. No ads. Just fast, accurate calculations when you need them. POWERFUL CALCULATORS Solve real-world electrical problems instantly: β€’ Ohm's Law β€” Voltage, current, resistance, and power calculations β€’ Voltage Divider β€” Output voltage, resistor values, current, and power dissipation β€’ Three-Phase Power β€” Balanced systems, Wye and Delta connections β€’ LED Circuits β€” Series resistor selection, power dissipation, max LEDs in series β€’ 555 Timer β€” Astable and monostable modes with frequency, duty cycle, and timing β€’ RLC Circuits β€” Resonant frequency, Q factor, bandwidth, impedance, and reactance β€’ Power Triangle β€” Real, reactive, and apparent power with PF correction sizing β€’ Impedance & Resistance β€” AC/DC circuit analysis β€’ Star-Delta Conversion β€” Transform between Y and Ξ” configurations β€’ Wheatstone Bridge β€” Unknown resistance and unbalanced bridge voltage β€’ Inductors β€” Reactance, energy storage, series/parallel, and time constants β€’ Wire Sizing β€” Circular mils, voltage drop (single and three-phase) β€’ Capacitors, Transformers, Motors, Batteries, UPS, Lighting, and more PRO CALCULATORS Unlock advanced tools for professionals: β€’ Op-Amp Circuits β€” Inverting, non-inverting, differential, and voltage follower β€’ Filter Design β€” RC and RL low-pass, high-pass, and bandpass filters β€’ PCB Trace Width β€” IPC-2221 current capacity and trace resistance β€’ Skin Effect β€” Depth calculations for copper and custom conductors 24 REFERENCE TABLES Instantly look up critical data β€” no more flipping through handbooks: β€’ AWG Wire Gauge β€” Diameter, area, resistance, and ampacity β€’ NEC Ampacity Table β€” 60Β°C, 75Β°C, and 90Β°C conductor ratings β€’ Resistor Color Codes β€” 4-band and 5-band decoding β€’ Standard Resistor Values β€” E12, E24, E48, and E96 series β€’ Circuit Breaker Sizes β€” Amp ratings, wire sizes, and typical applications β€’ Wiring Color Codes β€” NEC, IEC, and Australian standards β€’ Logic Gates Truth Tables β€” AND, OR, NAND, NOR, XOR, XNOR β€’ Transformer Connections β€” Delta, Wye, Scott-T, Zig-Zag, and more β€’ Power Factor Reference β€” Typical PF for motors, lighting, drives, and loads β€’ SI Prefixes β€” From tera to femto with electronics examples β€’ Conductor Properties β€” Resistivity, conductivity, and temp coefficients β€’ Common Semiconductor Pinouts β€” BJTs, MOSFETs, regulators, 555, 741 β€’ NEMA Enclosure Types β€” Indoor/outdoor ratings with IP equivalents β€’ IP Protection Ratings β€” Solids and liquids protection levels β€’ Ampacity Derating Factors β€” Temperature and conduit fill corrections β€’ Standard Capacitor Values β€” Ceramic, film, and electrolytic β€’ Cable Types β€” THHN, THWN, NM-B, MC, UF-B, and more β€’ Decibel Reference β€” Power and voltage ratios at a glance β€’ Motor Frame Sizes, Fuse Classes, Conduit Fill, and more UNIT CONVERSIONS Over 400 conversion formulas across 19 categories including metric, linear, liquid, cubic, pressure, weight, flow, BTU, horsepower, watts, joules, frequency, and HVAC. Plus 8 temperature scales: Celsius, Fahrenheit, Kelvin, Rankine, RΓ©aumur, Delisle, Newton, and RΓΈmer. BUILT FOR YOUR WORKFLOW β€’ Favorites β€” Star the calculators you use daily for one-tap access β€’ Calculation History β€” Every result saved automatically for easy reference β€’ Export & Share β€” Send results to colleagues or save for documentation β€’ Search & Filter β€” Find any formula or reference table in seconds β€’ Dark Mode β€” Designed for comfortable use on job sites and in the field β€’ US & Metric β€” Toggle between unit systems instantly WHY ELECTRONIC ENGINEER? Built by engineers, for engineers. We obsessed over accuracy, speed, and completeness so you can focus on what matters β€” getting the job done right. One purchase, no subscriptions, no recurring fees.

About

Electronics Toolkit calc

Features
Read full description

Electronics Calculator is a complete engineering toolkit designed to help students, hobbyists, and professionals perform accurate electronic circuit calculations quickly and easily. Whether you are studying electronics, building circuits, or working on design projects, this app provides all the essential calculators you need in one place. Simplify complex formulas, save time on manual calculations, and improve design accuracy with an intuitive and easy-to-use interface. Key Features Ohm’s Law Calculator Instantly calculate voltage, current, resistance, and power for quick circuit analysis. Resistor Color Code Reader Decode resistor color bands to identify resistance values and tolerance with ease. Capacitor & Inductor Calculators Compute capacitance, inductance, energy, charge, and time constants for accurate component selection. LED Resistor Calculator Find the correct resistor value for LED circuits to ensure proper brightness and safe operation. Series & Parallel Resistor Tools Calculate equivalent resistance for complex resistor networks quickly. Voltage & Current Divider Calculators Design efficient circuits by accurately determining voltage and current distribution. Frequency & Timing Calculations Perform essential time and frequency computations for oscillators, timers, and signal circuits. Decibel (dB) Converter Convert power and voltage ratios into decibels for signal and communication analysis. Why Choose Electronics Calculator? Multiple electronics calculators in one app Fast, accurate, and easy-to-use tools Ideal for students, technicians, and engineers Works offline anytime for quick reference Make your electronic calculations faster, easier, and more reliable with Electronics Calculator, the all-in-one companion for circuit design and learning.

Screenshots

Electronic Formulator4 screens
Electronics Toolkit calc4 screens

Verdict

The call

The clearest difference is price: Electronic Formulator at Free against Electronics Toolkit calc's $4.99. Electronic Formulator also leads on update cadence (every 9 days vs every 4 months). Electronics Toolkit calc's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 26.2). On ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Electronic Formulator is free to download; Electronics Toolkit calc costs $4.99 up front. Electronic Formulator sells 1 one-off in-app purchase. Electronics Toolkit calc asks for nothing beyond the download.

UpkeepUpdate frequency

Electronic Formulator ships an update every 9 days, Electronics Toolkit calc every 4 months. The most recent releases landed on September 21, 2026 and September 13, 2026 respectively.

Scorecard4 real differences Β· 2 level
Electronic Formulator versus Electronics Toolkit calc: the parameters behind the verdict, then further details
ParameterElectronic FormulatorElectronics Toolkit calc
PriceFree β€” better$4.99
Update frequencyEvery 9 days β€” betterEvery 4 months
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS26.213.0 β€” better
Further details β€” not scored
Size19 MB25 MB
Age rating4+4+
DeveloperHistorycentral.comKantaben Gorasiya

In-app purchases

1 purchases

Electronic Formulator

One-time1
  • Electronic Pro$2.99
None

Electronics Toolkit calc

No in-app purchases

Questions

Is Electronic Formulator free?
Electronic Formulator is free to download, with in-app purchases available.
Is Electronics Toolkit calc free?
Electronics Toolkit calc costs $4.99, with no in-app purchases.
Do Electronic Formulator or Electronics Toolkit calc have ads?
Neither Electronic Formulator nor Electronics Toolkit calc shows ads.
Which is updated more often, Electronic Formulator or Electronics Toolkit calc?
Electronic Formulator ships an update every 9 days, and Electronics Toolkit calc every 4 months. Most recently, Electronic Formulator was updated on September 21, 2026 and Electronics Toolkit calc on September 13, 2026.

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