Comparison

Electronics Tools & Calc Pro vs Lotus

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

Head to head
About

Electronics Tools & Calc Pro

This app serves as a pocket electronics lab, offering a comprehensive reference for components and circuits. It simplifies complex calculations for filters, inductors, and various circuit configurations, aiding engineers and hobbyists in their designs.

Highlights
  • Electronic component reference
  • Electronic circuit reference
  • Filter calculation tools
  • Inductor winding calculators
  • Resistor and capacitor calculations
  • Ohm's Law calculator
  • AC/DC power calculations
Features
Read full description

Calculate, simulate, and understand electronic circuits with more than 60 calculators, interactive tools, and illustrated engineering references. Electronics Tools & Calculator is an all-in-one toolkit for students, engineers, technicians, makers, and electronics enthusiasts. Use it to study circuit theory, select components, check designs, or troubleshoot projects with practical calculators and clear circuit visuals. MORE THAN 60 ELECTRONICS CALCULATORS Solve problems across a wide range of topics: • Ohm’s law, voltage, current, resistance, and power • Series and parallel resistors and capacitors • Four-band, five-band, and SMD resistor codes • Voltage and current dividers • DC power and ripple voltage • RC, RL, LC, and RLC circuits • LED resistor and parallel LED calculations • Capacitor and inductor charging • Star-to-delta and delta-to-star conversions ACTIVE AND PASSIVE FILTER DESIGN Design and explore: • RC, RL, and LC filters • Butterworth and Chebyshev filters • Active and passive filters • Sallen-Key active filters • Band-pass and band-reject filters • Twin-T notch filters Selected advanced calculators include response graphs, helping you visualize how component values affect circuit behavior. AMPLIFIERS AND SEMICONDUCTORS Work with practical tools for: • 555 timer astable and monostable circuits • BJT analysis, biasing, Q-point, and switching • MOSFET switching • Inverting, non-inverting, and difference amplifiers • Class A, Class B, and Class AB amplifiers • Differential amplifiers and current mirrors • LM386 audio amplifier circuits POWER, RF, AND DESIGN TOOLS Explore calculations for: • Linear regulators and heat dissipation • Buck and boost converters • Rectifiers and Zener regulators • Clippers, clampers, and voltage multipliers • PCB trace width • Air-core and multilayer inductors • Transformers • Coaxial cables and waveguides • Antenna length and skin depth • dBm, watts, and decibel conversions • Servo and stepper motors DIGITAL ELECTRONICS Study essential digital circuits with clear diagrams and truth tables: • Logic gates • Flip-flops and counters • Multiplexers and demultiplexers • Encoders and decoders • Shift registers • Common digital integrated circuits INTERACTIVE CIRCUIT TOOLS Explore circuit behavior through interactive simulations and strong visual explanations. Adjust values, examine circuit configurations, and connect formulas with practical electronic designs. ILLUSTRATED ELECTRONICS REFERENCES Access more than 30 guides covering resistors, capacitors, inductors, transformers, diodes, BJTs, MOSFETs, IGBTs, UJTs, SCRs, DIACs, TRIACs, operational amplifiers, regulators, 555 timers, sensors, digital logic, Arduino boards, and ATmega microcontrollers. The guides combine explanations, equations, circuit diagrams, pinouts, truth tables, and practical notes to connect theory with real-world applications. DESIGNED FOR FASTER WORK • Search calculators by name • Save frequently used tools to Favorites • View response graphs in selected calculators • Export results from selected tools as PDF documents • Automatically switch between light and dark appearance • Use an interface designed for phones and larger screens • Choose from 15 supported languages • Access additional features through optional Pro tools Whether you are learning electronics, designing a filter, analyzing an amplifier, or checking values at the workbench, Electronics Tools & Calculator keeps useful tools and references close at hand. Important: This app is intended for education and design assistance. Always verify calculations, component ratings, circuit requirements, and safety considerations before building or operating electronic equipment.

About

Lotus

Read full description

Lotus - Matching Network Designer Features - Learning how to matching network works - Computing Voltage, Current and Power across each part - 8 Templates embedded - Visualization of matchable impedance regions.

Screenshots

Electronics Tools & Calc Pro4 screens
Lotus4 screens

Verdict

The call

The clearest difference is price: Lotus at Free against Electronics Tools & Calc Pro's $4.99. Electronics Tools & Calc Pro's advantage is device support. On in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Lotus is free to download; Electronics Tools & Calc Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 8 level
Electronics Tools & Calc Pro versus Lotus: the parameters behind the verdict, then further details
ParameterElectronics Tools & Calc ProLotus
Price$4.99Free — better
Rating5.0 (5 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 5 months—
AdsNo—
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — better—
Requires iOS15.0 — better16.0
Further details — not scored
Size58 MB4 MB
Age rating4+4+
DeveloperAnas AbubakarRyoun Chon Shin

In-app purchases

None

Electronics Tools & Calc Pro

No in-app purchases

None

Lotus

No in-app purchases

Questions

Is Electronics Tools & Calc Pro free?
Electronics Tools & Calc Pro costs $4.99, with no in-app purchases.
Is Lotus free?
Lotus is free to download, with no in-app purchases.

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