Electronics Toolkit! vs Simurelay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Electronics Toolkit!
This app provides a comprehensive suite of tools and calculators for electronics engineers, students, and hobbyists. It includes numerous calculators for resistors, LEDs, capacitors, Ohm's law, and more, alongside useful tables and unit converters.
- Resistor color code calculators
- LED resistor calculator
- Ohm's law calculator
- Unit converter
- Logic gates truth tables
- 7-segment display simulator
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Electronics Toolkit is a helpful app with dozens of tools, calculators and references made for electronic engineers, students and hobbyists. Features: Calculators: • Resistor color codes - calculate the resistance of resistors by selecting the colors of the bands • SMD resistor codes - calculate the resistance of SMD resistors by entering the number • LED resistor calculator - calculate the needed resistance to connect en LED to a power source • Parallel resistors - calculate the resistance of resistors in parallel • Voltage divider - calculate the output voltage of a voltage divider • Series resistors - calculate the resistance of resistors in series • Ohm's law - calculate the voltage, current of resistance by entering the other two • Capacitance calculator - calculate the capacitance, voltage or charge by entering the other two • Battery discharge - calculate the time it takes to discharge a battery • Inductor color codes - calculate the inductance of inductors by selecting the colors of the bands • Parallel capacitors - calculate the capacitance of capacitors in parallel • Series capacitors - calculate the capacitance of capacitors in series • Unit converter - unit converter for length, temperature, area, volume, weight, time, angle, power and base • Op-amp calculator - calculate the output voltage of non-inverting, inverting, summing and differential opamps • Wheatstone bridge - calculate the resistance of one resistor in a balanced bridge or calculate the output voltage • Inductor codes - calculate the inductance of inductors by entering the number • Capacitor codes - calculate the capacitance of capacitors by entering the number • DAC and ADC calculator - calculate the output of digital-analog and analog-digital converters • Wavelength frequency calculator - calculate the frequency or wavelength of a wave • SI prefixes - convert numbers with SI prefixes • Capacitor energy - calculate the energy in a capacitor • Slew rate calculator - calculate the slew rate • Star delta transformation - calculate the resistors in a star delta transformation • Zener calculator - calculate the resistance of the resistor and voltage of the zener • Air core inductor calculator - calculate the inductance and wire length of an air-core inductor • 555 timer calculator - calculate the frequency, period, duty cycle, high time and low time of a popular 555 timer circuit • Plate capacitor calculator - calculate the capacity of a plate capacitor • Resistance to color code calculator - calculate the colors on the resistor by entering the resistance • LM317 - calculate the output voltage of an LM317 • Low pass filters • Wire resistance - calculate the resistance of an electrical wire • RMS voltage • Decibel calculator •Reactance Tables: • Logic gates - truth table of the 7 logic gates with interactive buttons • 7-segment display - an interactive display that you can change by clicking on one of the segments or by clicking on a button to show a hexadecimal character • ASCII - decimal, hexadecimal, binary, octal and char ASCII table • Resistivity - table with the resistivity of common metals at 293K • Arduino pinout • Pinout diagrams of 4000 and 7400 series ICs
Simurelay
Design and simulate electromechanical systems with a wide range of basic electrical components. Create detailed electrical diagrams using relays, switches, buttons, contactors, and timers.
- Design electromechanical systems
- Simulate electrical diagrams
- Basic electrical components library
- Relays, switches, buttons, contactors
- Timers and motors simulation
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Simurelay is a simulator to help you design electromechanical systems and simulate them. It allows to make many electrical diagrams by using the available basic components such as relays, switches, buttons, contactors, timers, motors...
Screenshots
Verdict
The clearest difference is ads: Simurelay at none against Electronics Toolkit!'s shown. Simurelay also leads on review sentiment (52% vs 38%). Electronics Toolkit!'s advantage is rating (4.3 vs 3.9) and update cadence (every 2 months vs every 7 months). 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
Both are free to download. Electronics Toolkit! sells 1 one-off in-app purchase and Simurelay sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Electronics Toolkit! holds the better App Store score, 4.3 against 3.9. That said, the two scores are not equally well evidenced: Electronics Toolkit! has 556 ratings behind it against 17, so its average is the more settled of the two. Written reviews complicate that: 38% of Electronics Toolkit!'s written reviews are positive against 52% of Simurelay's, so the app with the better star average is not the one people write more warmly about.
Electronics Toolkit! ships an update every 2 months, Simurelay every 7 months. The most recent releases landed on September 29, 2026 and September 27, 2026 respectively.
| Parameter | Electronics Toolkit! | Simurelay |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (556 ratings) — better | 3.9 (17 ratings) |
| Positive reviews | 38.2% of reviews | 52.3% of reviews — better |
| Number of ratings | 556 — better | 17 |
| Update frequency | Every 2 months — better | Every 7 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 11.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 23 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Electronial | Abdessamed Benkabouya |
Customer experience
Electronics Toolkit!
Simurelay
Bugs and requests
Electronics Toolkit!
Reported bugs
10 issues- App crashes when entering values in calculation fields
- Keyboard doesn't appear or dismiss properly
- Pro version purchase not activating features
- App reverts to free version after purchase
- Calculation functions non-functional
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- Input fields partially visible or cut off
- App won't load on some devices
- Navigation issues (no back button to main menu)
- Unstable performance and frequent crashes
- Blurry or distorted text in some sections
Requested features
8 requests- Dark mode option
- Working calculator functionality with proper input fields
- Multi-language support (Turkish, Spanish, Hindi, etc.)
- Expanded IC pinout database
- More detailed background information and tutorials
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- Keyboard dismiss functionality
- Better translation quality
- Cross-device license sharing
Simurelay
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Electronics Toolkit!
- Pro version$2.99
Simurelay
- Timers Coils and Contacts$7.99
- Advanced Tools$7.99
- Full Version$14.99
Questions
Is Electronics Toolkit! free?
Is Simurelay free?
Which has better reviews, Electronics Toolkit! or Simurelay?
Do Electronics Toolkit! or Simurelay have ads?
Which is updated more often, Electronics Toolkit! or Simurelay?
Other comparisons
