Comparison

RoboArm vs Electronics Tools & Calculator

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

Head to head
About

RoboArm

Control a DIY robotic arm built from a construction kit. This educational app is designed for children aged 10 and up, as well as adults, to interact with their assembled robotic creations.

Highlights
  • Robotic arm control
  • DIY construction kit integration
  • Educational for ages 10+
  • Arduino-based technology
  • Interactive learning
Features
Read full description

Mobile App for control RoboArm once it was assembled. RoboArm is DIY Robotic Arm Construction Kit based on Arduino for children from 10 years old and adults. Includes over 300 details and components. Make an order on https://roboarm.info/.

About

Electronics Tools & Calculator

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

Highlights
  • Electronic component reference
  • Electronic circuit reference
  • Filter design calculators
  • Inductor winding calculators
  • Transformer winding calculators
  • Resistor and capacitor calculations
  • Ohm's law and 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.

Screenshots

RoboArm3 screens
Electronics Tools & Calculator4 screens

Verdict

The call

The clearest difference is rating: RoboArm at 5.0 against Electronics Tools & Calculator's 4.0. RoboArm also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Electronics Tools & Calculator's advantage is ratings volume (16 vs 1). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

RoboArm holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Electronics Tools & Calculator has 16 ratings behind it against 1, so its average is the more settled of the two.

Scorecard4 real differences · 6 level
RoboArm versus Electronics Tools & Calculator: the parameters behind the verdict, then further details
ParameterRoboArmElectronics Tools & Calculator
PriceFreeFree
Rating5.0 (1 ratings) — better4.0 (16 ratings)
Positive reviews—16.7% of reviews
Number of ratings116 — better
Update frequency—Every 6 weeks
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size11 MB63 MB
Age rating4+4+
DeveloperIgor ErostenkoAnas Abubakar

Customer experience

RoboArm

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

Electronics Tools & Calculator

All ratings16 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews6 reviews
Positive16.7%
Neutral0.0%
Negative83.3%

In-app purchases

None

RoboArm

No in-app purchases

None

Electronics Tools & Calculator

No in-app purchases

Questions

Is RoboArm free?
RoboArm is free to download, with no in-app purchases.
Is Electronics Tools & Calculator free?
Electronics Tools & Calculator is free to download, with no in-app purchases.
Which has better reviews, RoboArm or Electronics Tools & Calculator?
RoboArm is rated higher. RoboArm averages 5.0 out of 5 from 1 ratings, while Electronics Tools & Calculator averages 4.0 from 16 ratings.
Do RoboArm or Electronics Tools & Calculator have ads?
Electronics Tools & Calculator shows ads; RoboArm does not.

Other comparisons