Magnetic Field Calc + vs Electronic Circuits Calc Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Magnetic Field Calc +
Calculate magnetic fields from electric currents with four distinct modes. Solve for any variable, visualize with interactive diagrams, and utilize flexible unit support. Works offline for convenience.
- Four calculation modes (Straight Wire, Loop, Solenoid, Toroid)
- Solve for any variable (field, current, distance, etc.)
- Interactive 2D diagrams
- Flexible unit support (A, mA, m, cm, mm, T, µT, Gauss)
- Built-in reference sheet
- Save and copy calculations
- Offline functionality
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Calculate magnetic fields generated by electric currents with precision and ease. Magnetic Field Calculator is a fast, offline physics tool designed for students, engineers, and science enthusiasts. FOUR CALCULATION MODES • Straight Wire — B = (μ₀ · I) / (2π · r) • Circular Loop — B = (μ₀ · I) / (2 · R) • Solenoid — B = μ₀ · n · I • Toroid — B = (μ₀ · N · I) / (2π · r) SOLVE FOR ANY VARIABLE Not just magnetic field strength — reverse-calculate current (I), distance (r), radius (R), turn density (n), or total turns (N). Select what you want to solve, enter the known values, and get instant results. INTERACTIVE DIAGRAMS Each mode displays a clear 2D diagram showing the wire geometry, field direction, and key variables. Visual learning made simple. FLEXIBLE UNIT SUPPORT • Current: Ampere (A), Milliampere (mA) • Distance: Meter (m), Centimeter (cm), Millimeter (mm) • Magnetic Field: Tesla (T), Microtesla (µT), Gauss All conversions handled automatically with high-precision SI calculations. BUILT-IN REFERENCE Quick-access formula sheet with constants (μ₀), formulas, variable definitions, and unit conversion tables — everything you need in one place. SAVE & REVIEW Save calculations to history for quick reference. Copy results to clipboard with one tap. WORKS OFFLINE No internet connection required. All calculations run locally on your device — fast, private, and reliable. Perfect for physics homework, exam preparation, lab work, electrical engineering projects, or anyone curious about electromagnetism. The magnetic force on a current-carrying wire is perpendicular to both the wire and the magnetic field, with the direction given by the right-hand rule. Magnetic fields arise from charges, similar to electric fields, but are different in that the charges must be moving. A long straight wire carrying a current is the simplest example of a moving charge that generates a magnetic field. The force a charge feels when moving through a magnetic field depends on the right-hand rule. The direction of the magnetic field due to moving charges also depends on the right-hand rule. The direction of the magnetic field is perpendicular to the wire and is in the direction the fingers of the right hand would curl if wrapped around the wire with the thumb in the direction of the current. The strength of the magnetic field depends on the current I in the wire and d, the distance from the wire. Thank you for your support, and feel free to visit nitrio.com for more apps for your iOS devices.
Electronic Circuits Calc Pro
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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
Verdict
The clearest difference is update cadence: Electronic Circuits Calc Pro at every 2 months against Magnetic Field Calc +'s every 27 months. Magnetic Field Calc +'s advantage is price ($2.99 vs $4.99). On ads, in-app purchases, device support and iOS requirement 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
Magnetic Field 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.
Magnetic Field Calc + ships an update every 27 months, Electronic Circuits Calc Pro every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Magnetic Field Calc + | Electronic Circuits Calc Pro |
|---|---|---|
| Price | $2.99 — better | $4.99 |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 27 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | ALG Software Lab |
In-app purchases
Magnetic Field Calc +
No in-app purchases
Electronic Circuits Calc Pro
No in-app purchases
Questions
Is Magnetic Field Calc + free?
Is Electronic Circuits Calc Pro free?
Do Magnetic Field Calc + or Electronic Circuits Calc Pro have ads?
Which is updated more often, Magnetic Field Calc + or Electronic Circuits Calc Pro?
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