Comparison

My Physics Calculator vs Operational Amplifiers Pro

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

Head to head
About

My Physics Calculator

This app offers a comprehensive suite of over 130 calculators for physics and engineering calculations. It provides clear formulas and definitions for each parameter, making complex calculations accessible with a simple interface.

Highlights
  • 130+ physics and engineering calculators
  • Includes formulas and definitions
  • Simple user interface
  • Mechanics & Motion calculations
  • Fluids & Thermodynamics calculations
  • Electrical & Circuit calculations
  • Projectile Motion calculations
Features
Read full description

My Physics Calculator features 134 calculators for various physics and engineering parameters. With a simple user interface, it provides formulas and definitions for each calculation. List of 134 Calculators: Mechanics & Motion: • Force • Kinetic Friction • Static Friction • Centripetal Force • Centripetal Acceleration • Gravitational Acceleration • Angular Acceleration • Work • Total Work • Power (Work-Based) • Power (Displacement-Based) • Power (Velocity-Based) • Displacement / Distance • Differential Pressure Fluids & Thermodynamics: • Density • Water Density • Kinematic Viscosity • Mass Flow Rate • Temperature • Thermal Conductivity • Thermal Diffusivity • Thermal Linear Expansion • Thermal Volumetric Expansion • Heat Flow • Heat Transfer Rate • Specific Heat Capacity Energy & Motion: • Kinetic Energy • Potential Energy • Elastic Potential Energy • Einstein’s Mass-Energy Equation • Gravitational Potential Velocity & Motion Laws: • Velocity • Circular Velocity • Average Velocity • Escape Velocity • Drift Velocity • Newton’s Law of Gravity • Newton’s Second Law of Motion • Archimedes’ Principle • Kepler’s Third Law • Hooke’s Law • Pascal’s Law • Poiseuille’s Law • Darcy’s Law • Stokes’ Law Engineering Numbers & Factors: • Souders-Brown Equation • Podmore Factor • Cavitation Number • Euler Number • Fourier Number • Knudsen Number • Mach Number • Nusselt Number • Reynolds Number • Weber Number • Froude Number • Prandtl Number • Schmidt Number • Brinell Hardness Number Doppler Effect Calculations: • Wavelength (Front & Behind) • Approaching Source • Receding Source • Approaching Receiver • Receding Receiver Projectile Motion: • Vertical Velocity • Vertical Displacement • Horizontal Displacement • Range Impulse, Momentum & Torque: • Impulse (Velocity-Based) • Impulse (Time-Based) • Momentum (Velocity-Based) • Momentum (Time-Based) • Moment • Torque • Moment of Inertia Engineering & Structural Calculations: • Transverse Strength • Standard Surface Factor • Rectangular Tank Capacity • Cylindrical Tank Capacity • Apparent Porosity • True Porosity Planetary & Seismic Calculations: • Seismic Geophone • Weight on Different Planets • Wenner Spacing (Soil Resistivity) • Luminosity of Stars Sound & Waves: • Sound Pressure Level • Sound Intensity Level • Sound Power Emitted • Sound Wavelength • Sound Speed • RMS Noise • Noise Pollution Level Oscillations & Springs: • Simple Pendulum • Physical Pendulum • Leaf Springs • Helical Spring Rate • Helical Spring Axial Deflection • Helical Spring Index Electrical & Circuit Calculations: • Inductive Reactance • Capacitive Reactance • Resonant Frequency • Inductor Sizing Equation • Capacitor Sizing Equation • Resistance • Battery Life • Battery Charge Time • kVA Calculation • Potentiometer • Voltage Divider • Electrodialysis • Electrical Harmonics • Horsepower • Ohm’s Law (Voltage, Power, Resistance, Current) Material Properties: • Shear Modulus • Bulk Modulus • Young’s Modulus • Stress • Strain

About

Operational Amplifiers Pro

This app provides interactive calculators and reference information for designing and analyzing op-amp circuits. It offers step-by-step explanations and technical data on popular op-amp series, aiding students and engineers in circuit development and prototyping.

Highlights
  • Interactive op-amp circuit calculators
  • Step-by-step explanations and formulas
  • Reference data on op-amps and comparators
  • Support for 14 languages
  • Light and dark mode
  • Advanced calculators and circuit guides (Pro)
  • Full-text search (Pro)
Features
Read full description

Operational Amplifiers Pro is your essential tool for designing and analyzing circuits using op-amps. Whether you're a student, electronics enthusiast, or experienced engineer, this app helps you create, calculate, and understand a wide variety of op-amp–based circuits with ease. Use it as a practical reference when developing projects, building prototypes, or studying amplifier configurations. The app also includes technical data on popular operational amplifier and comparator series — making it a handy guide for both design and selection. 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! Key Features: • Interactive calculators for common op-amp circuits • Step-by-step explanations and formulas • Reference info on op-amps and comparators • Ideal for learning, prototyping, or quick checks • Light and dark mode support Pro Version Includes: • Advanced calculators and circuit guides • Full-text topic search • Save favorite circuits for quick access The application contains the following guides and calculators: Amplifiers • Non-inverting operational amplifier • Inverting operational amplifier • Inverting amplifier with T-bridge in OS • Differential amplifier • Differential amplifier with T-bridge in OS • Voltage repeater • Inverting voltage repeater • AC voltage amplifier • High Input Impedance AC Voltage Amplifier • AC voltage repeater ActiveFilters • Non-inverting low-pass filter • Inverting low-pass filter • Non-inverting high-pass filter • Inverting high pass filter • Bandpass filter • Gyrator Integrators and differentiators • Voltage integrator • Sum integrator • Integrator with signal amplification • Difference integrator • Double integrator • Voltage differentiator • Sum Differentiator • Differentiator with T-bridge • Differentiator with T-bridge made of capacitors • Difference differentiator Comparators • Comparator • Limiter • Limiter with zener diode at the input • RS trigger Attenuators • Non-inverting attenuator • Inverting attenuator Converters • Voltage-to-current converter with non-inverting input • Voltage to current converter with inverting input • Voltage to current converter with differential input Adders and substactors • Inverting adder • Addition-subtraction circuit • Non-inverting adder Logarithmic and exponential amplifiers • Diode-based logarithmic amplifier • Transistor-based logarithmic amplifier • Diode exponential amplifier • Exponential transistor amplifier • Popular operational amplifiers description and pinout Sine Wave generators • Op-Amp Oscillators • Oscillator with Diode in the Feedback Path • Twin-T Network Signal Generator Square-wave pulse generators • Op-Amp Square-Wave Generator • Adjustable Square-Wave Generator • Enhanced Square-Wave Generator • Duty-Cycle Adjustment • Triangle and Square-Wave Generator • Generator with Adjustable Slope and Duty Cycle Triangle-wave signal generators • Nonlinear Triangle-Wave Generator • Variable-Symmetry Sawtooth Generator • Linear Triangle-Wave Generator • Adjustable Linear Triangle-Wave Generator • Variable-Symmetry Ramp Generator Download now and power up your electronics work!

Screenshots

My Physics Calculator4 screens
Operational Amplifiers Pro4 screens

Verdict

The call

The clearest difference is rating: Operational Amplifiers Pro at 5.0 against My Physics Calculator's 4.3. Operational Amplifiers Pro also leads on update cadence (every 2 months vs every 12 months). My Physics Calculator's advantage is ratings volume (44 vs 1) and price ($2.99 vs $4.99). On ads, in-app purchases, monetization model 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

My Physics Calculator costs $2.99 and Operational Amplifiers Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Operational Amplifiers Pro holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: My Physics Calculator has 44 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

My Physics Calculator ships an update every 12 months, Operational Amplifiers Pro every 2 months. The most recent releases landed on October 28, 2026 and October 19, 2026 respectively.

Scorecard4 real differences · 6 level
My Physics Calculator versus Operational Amplifiers Pro: the parameters behind the verdict, then further details
ParameterMy Physics CalculatorOperational Amplifiers Pro
Price$2.99 — better$4.99
Rating4.3 (44 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings44 — better1
Update frequencyEvery 12 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS16.6 — better17.0
Further details — not scored
Size7 MB14 MB
Age rating4+4+
DeveloperV PUGAZHENTHIALG Software Lab

Customer experience

My Physics Calculator

All ratings44 ratings
Positive81.8%
Neutral2.3%
Negative15.9%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Operational Amplifiers Pro

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

My Physics Calculator

No in-app purchases

None

Operational Amplifiers Pro

No in-app purchases

Questions

Is My Physics Calculator free?
My Physics Calculator costs $2.99, with no in-app purchases.
Is Operational Amplifiers Pro free?
Operational Amplifiers Pro costs $4.99, with no in-app purchases.
Which has better reviews, My Physics Calculator or Operational Amplifiers Pro?
Operational Amplifiers Pro is rated higher. My Physics Calculator averages 4.3 out of 5 from 44 ratings, while Operational Amplifiers Pro averages 5.0 from 1 ratings.
Do My Physics Calculator or Operational Amplifiers Pro have ads?
Neither My Physics Calculator nor Operational Amplifiers Pro shows ads.
Which is updated more often, My Physics Calculator or Operational Amplifiers Pro?
My Physics Calculator ships an update every 12 months, and Operational Amplifiers Pro every 2 months. Most recently, My Physics Calculator was updated on October 28, 2026 and Operational Amplifiers Pro on October 19, 2026.

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