Comparison

Harmonic Wave Equation Calc vs Electronic Circuits Calc Pro

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

Head to head
About

Harmonic Wave Equation Calc

This physics and math calculator quickly determines wave properties like displacement, velocity, and amplitude. It provides instant calculations with copyable results and includes reference formulas. Optimized for everyday use, it supports high precision and various units.

Highlights
  • Instant wave calculations
  • Copyable results
  • Included reference formulas
  • Supports 16 decimal places
  • Multiple unit support
  • Ad-free and private
Features
Read full description

Harmonic Wave Equation Calculator is a physics/math calculator used to find the displacement of a given point along the wave, the position of that point, the time point, wave velocity, wavelength, amplitude, or initial phase of the wave quickly and easily. Features: - Instant calculation. - Results are copyable to other apps. - Formulas are included as references. - Supports up to 16 decimal places. - Supports various units for each input. - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. A harmonic of such a wave is a wave with a frequency that is a positive integer multiple of the frequency of the original wave, known as the fundamental frequency. The original wave is also called the 1st harmonic; the following harmonics are known as higher harmonics. Formula: y = A * sin[(2π / λ) * (x - vt) + Φ] where: y - displacement of a given point along the wave x - position of that point (its distance from the source) t - time point v - wave velocity λ - wavelength A - amplitude Φ - initial phase of the wave Thank you for your support, and feel free to visit nitrio.com for more apps for your iOS devices.

About

Electronic Circuits Calc Pro

Features
Read full description

Electronic Circuits Calc Pro is your ultimate electronics toolkit — featuring over 130 calculators, circuit tools, and guides for beginners and professionals alike. Perfect for electronics enthusiasts, students, hobbyists, and engineers alike, Electronic Circuits Calculator Pro is a powerful reference tool covering essential electronics concepts, components, and circuit design. Whether you're just getting started or need a quick calculation on the go, this app has you covered. Key Features: • Interactive calculators for circuits • Step-by-step explanations and formulas • Ideal for learning, prototyping, or quick checks • Full-text search for instant access to any topic • Designed for both light & dark modes Available in 14 Languages: • English, French, German, Indonesian, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian, and Vietnamese — study in your native language! Categories Included: Basic calculators • Ohm's Law • Power, voltage and current • Resistive voltage divider • Wheatstone Bridge • RC circuit time constant • Battery Life • Additional resistor for voltmeter • Shunt resistor for ammeter Resistors • Resistor color codes • SMD resistor codes • EIA-96 Encoding • Standard values finder for resistor • Series resistors • Parallel resistors • E series Capacitors • Ceramic disc capacitors codes • Film capacitors codes • Capacitor working voltage codes • Film capacitors colour codes • SMD Tantalum electrolytic capacitors codes • Series capacitors • Parallel capacitors Inductors • Inductor color codes • SMD inductors codes • Series inductors Diodes • Diodes • Rectifier diodes • Signal diodes • Schottky diode • Tunnel diode • Varicap • Zener diode Transistors • Bipolar transistors • Metal-Oxide-Semiconductor Field-Effect Transistor • Junction Field-Effect Transistor • Unijunction transistor • Insulated gate bipolar transistor • Darlington transistor pair Thyristors • Thyristors • Gate Turn-Off Thyristor • TRIAC • DIAC • IGCT thyristor • MOS-Controlled Thyristor • Programmable unijunction transistor PowerSupplies • AC parameters and rectified value • Half-wave rectifier • Full-wave rectifier • Bridge rectifier • Capacitive power supply • Power source internal resistance • Symmetrical voltage doubling rectifier circuit • Three-Phase Half-Wave Rectifier • Three-phase bridge rectifier • Voltage multiplier Voltage and current regulators • LM317 Voltage regulator calculator • Bipolar voltage regulator for LM317 and LM337 • LM317 Current Source calculator • Zener reference voltage source • Thermally compensated voltage reference • Calculation of the stabilizer on TL431 • The TL431 stabilizer with additional transistor LED • Introduction of LEDs • LED Single Resistor calculator • LED Series Resistor calculator • LED Parallel Resistor calculator • 7-segment LED display • Decoder (driver) for 7-segment displays CD4511 Photocells • Photodiode • Photoresistor • Phototransistor • Optocoupler OP • Non-Inverting OP Amplifer Gain calculator • Inverting OP Amplifier Gain calculator • Inverting amplifier with T-bridge in feedback • Inverting summing OP Amplifier • Differential OP amplifier • OP Voltage integrator • OP Voltage Differentiator • OP Voltage comparator Frequency • Capacitor reactance • Reactance of an inductance coil • Gain conversion to decibels • dBm to Watts conversion • T-Attenuator • Pi-Attenuator • L-Attenuator • Bridged T-Attenuator • Capacitive AC Voltage Divider • Inductive Voltage Divider • Frequency and wavelengths Filters • RC Pass Filter • RC Band pass filter • RL filter • LC Pass Filter Timers • Astable multivibrator • Monostable (waiting) multivibrator • Bistable multivibrator • Multivibrator with additional diodes • NE555 Astable Multivibrator • NE555 Monostable Multivibrator Logic gates: - AND. OR, NOT, NAND, NOR, XOR, XNOR The application is being actively developed and supplemented with new calculators. Keep for updates!

Screenshots

Harmonic Wave Equation Calc4 screens
Electronic Circuits Calc Pro4 screens

Verdict

The call

The clearest difference is update cadence: Electronic Circuits Calc Pro at every 2 months against Harmonic Wave Equation Calc's every 31 months. Harmonic Wave Equation Calc's advantage is price ($2.99 vs $4.99) and iOS requirement (13 vs 17.0). On ads, in-app purchases 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

Harmonic Wave Equation Calc costs $2.99 and Electronic Circuits Calc Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Harmonic Wave Equation Calc ships an update every 31 months, Electronic Circuits Calc Pro every 2 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

Scorecard3 real differences · 6 level
Harmonic Wave Equation Calc versus Electronic Circuits Calc Pro: the parameters behind the verdict, then further details
ParameterHarmonic Wave Equation CalcElectronic Circuits Calc Pro
Price$2.99 — better$4.99
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 31 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS13 — better17.0
Further details — not scored
Size1 MB19 MB
Age rating4+4+
DeveloperNitrioALG Software Lab

In-app purchases

None

Harmonic Wave Equation Calc

No in-app purchases

None

Electronic Circuits Calc Pro

No in-app purchases

Questions

Is Harmonic Wave Equation Calc free?
Harmonic Wave Equation Calc costs $2.99, with no in-app purchases.
Is Electronic Circuits Calc Pro free?
Electronic Circuits Calc Pro costs $4.99, with no in-app purchases.
Do Harmonic Wave Equation Calc or Electronic Circuits Calc Pro have ads?
Neither Harmonic Wave Equation Calc nor Electronic Circuits Calc Pro shows ads.
Which is updated more often, Harmonic Wave Equation Calc or Electronic Circuits Calc Pro?
Harmonic Wave Equation Calc ships an update every 31 months, and Electronic Circuits Calc Pro every 2 months. Most recently, Harmonic Wave Equation Calc was updated on November 2, 2026 and Electronic Circuits Calc Pro on October 27, 2026.

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