ELECTROtools vs Electronics Engineer Helper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ELECTROtools
This app provides electricians and engineers with essential tabulations, formulas, and graphics for various electrical and electronic tasks. It includes tools for circuit calculations, component identification, and data lookup, making it a handy reference for fieldwork and office use.
- Electrical tabulations and graphics
- Formulae calculator
- Component identification
- Color code references
- Cable dimensioning
- Own document uploads
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Tabulations and formulae App for electricians, electronic engineers and anybody else operating within this field of business. With this App. you always have all important information at hand! The ideal tool for building sites, customer service, workshop, office and meetings. This App. contains formulae which are automatically converted, understandable graphics and clear tabulations At present only SI-Units!!!!! Most table entries are based on German and / or European standards! The screenshots shows the design in >= iOS 7. At this time following functions are integrated: Tabulations and graphics - Protection Classes - IP Code - Current Ratings (at present only available in German) - Assignments (ISDN, TAE etc.) - Terminal Identification - Motor Terminals - Circuits (Light) - Fiber Optics Engineering - Fuse Color Codes - Color Coded Cable End Sleeves - Telecommunication cable: sorting the colorcode - Typical Illuminance Strengths - Fluorescent Lamp Data (Colors, Lengths) - Lamp Sockets - Component Symbols - Equipment Identification - Acronyms and Abbreviations (under construction) - Own Documents (Upload your own files in this App.) Formulae Calculator - Power - Motor Power - Voltage Drop - Compensation - Ohm's Law - Cable Dimensioning (Convenience-Voltage-Drop-Calculator) - Cost of Electricity - Cable Length - Cable Price (DEL, €) - Fixation Interval Calculator - Scale Calculator - Pythagorean Theorem - Power over Energy Meter - Sat-Finder, Dish Alignment Calculator (Freely selectable location coordinates and satellites.) - Barcode product search - Manufacturer Tools: Use the configurators and the know-how of the manufacturer
Electronics Engineer Helper
This app provides a comprehensive suite of calculators and reference tools for electronics enthusiasts and professionals. It includes features for component identification, circuit calculations, and electrical property analysis, aiding in both study and practical work.
- Datasheet search
- Resistor color code calculator
- Electronic schematic symbols
- Pinouts guide
- Ohm's law calculator
- AWG converter
- Unit converter
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Digital toolbox for electronics engineers and electricians. Calculators and references for beginners and professionals — for work, study, DIY, and repair. Used by over 100,000 users. Completely ad-free. Included tools: • Datasheet search • Equivalent parts search (cross reference for transistors, diodes and ICs) • Resistor color and digit marking (4, 5 and 6 band color code; 2 symbols, 3/4 digit and EIA-96 code SMD resistors code) • Electronic schematic symbols (IEC 60617, IEEE 315 and GOST standards) • Pinouts of connectors and interfaces (USB, HDMI, DisplayPort, DVI, VGA, Thunderbolt, Apple Lightning and 30-pin, SATA, PCI Express and M.2, Ethernet RJ45 with PoE, RJ11/RJ14/RJ25, RS-232/422/485, IEEE 1394 FireWire, ATX, computer fans, SD card, audio jack, RCA, MIDI, XLR, PS/2, D-sub, SMEMA) • Pinouts of boards and microcontrollers (Raspberry Pi and Pico, Arduino, ESP32, ESP8266, STM32 Nucleo, Teensy, Orange Pi, RADXA Rock Pi, LubanCat, Flipper Zero, ATmega and ATtiny) • Ohm's law calculator • AWG converter (wire diameter, cross-section area, resistance and maximum current) • Resistor for LED • Voltage divider • Wheatstone bridge (output voltage or unknown resistance, current and power of every arm) • Capacitor code • Capacitor markings • Capacitor ESR tables • Frequency response curve calculation of passive filters (RC, RL, RLC, LC) • Inductor color code • Air-core coil calculator (inductance or number of turns of a single-layer solenoid) • Ideal transformer (winding turns, voltages and currents) • Linear current regulator • SMD packages list • Reactance • PCB trace resistance • Active, apparent and reactive power • RMS converter (peak, RMS and peak-to-peak values for seven waveform shapes) • 555 waveform generator • Operational amplifiers • RLC circuit • Number conversion • Unit converter • Cable voltage drop • Battery life (runtime of a battery pack, with discharge curve) • NTC thermistor resistance • Logic gates • RC circuit • Decibels calculator • 25-pair cable color code • Fuse color marking Additionally, by purchasing the PRO version of the app, you will get access to additional tools: • SMD components marking codes • Diodes color code (Pro Electron, JEDEC and JIS-C-7012 standards) • Linear voltage regulator • Resistor value to color or SMD code marking converter • Voltage rectifier • Series or parallel electrical components' connection calculator • Diode voltage drop • Minimum PCB trace width • Analog to digital conversion • Attenuators • 4-20 mA signal converter • Thermocouple calculator • Resistance thermometer • Buck switching voltage regulator • Wire resistance • Zener diode regulator (Zener diode and series resistor selection from a catalogue of 438 parts) • Load cell (bridge output voltage to weight, force, pressure or torque) • BJT voltage divider biasing • Transformer turns per volt (from core area, flux density and frequency) • Junction temperature (with or without a heatsink, power derating curve) • Solar string dimensioning (minimum voltage and current ratings for a PV array) • Solar cable and fuse selection (NEC and IEC rules) • 555 astable generator with variable duty cycle • NTC thermistor in a voltage divider and with an ADC input Privacy Policy: https://www.eehelper.app/ios/privacy/ Terms of Use: https://www.eehelper.app/ios/terms/
Screenshots
Verdict
The clearest difference is rating: Electronics Engineer Helper at 4.8 against ELECTROtools's 4.0. Electronics Engineer Helper also leads on ratings volume (436 vs 2) and update cadence (monthly vs every 2 months). ELECTROtools's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 17.0). On price, review sentiment, ads 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 Engineer Helper sells 2 in-app purchases, starting at $4.89 per year. ELECTROtools asks for nothing beyond the download.
Electronics Engineer Helper holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Electronics Engineer Helper has 436 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 100% of ELECTROtools's written reviews are positive against 98% of Electronics Engineer Helper's, so the app with the better star average is not the one people write more warmly about.
ELECTROtools ships an update every 2 months, Electronics Engineer Helper monthly. The most recent releases landed on June 5, 2026 and September 18, 2026 respectively.
| Parameter | ELECTROtools | Electronics Engineer Helper |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) | 4.8 (436 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 97.7% of reviews |
| Number of ratings | 2 | 436 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 75 MB | 91 MB |
| Age rating | 4+ | 12+ |
| Developer | FEGIME Deutschland Marktgemeinschaft im Elektrogrosshandel GmbH & Co. KG | Rostyslav Dovhaliuk |
Customer experience
ELECTROtools
Electronics Engineer Helper
Bugs and requests
ELECTROtools
Not enough reviews yet to summarise bugs or requests.
Electronics Engineer Helper
Reported bugs
2 issues- Incorrect resistor color code display for some values
- In-app purchase option not working for some users
Requested features
5 requests- Add more circuit schematics and examples
- Include ASCII code to decimal, hex, and octal conversion
- Expand the pinout section with more details
- Add active filter (RC, RL, RLC, LC) calculators
- Include digital to analog converter, transistor, and transformer calculators
In-app purchases
ELECTROtools
No in-app purchases
Electronics Engineer Helper
- 1 Year Subscription1 Month trial$4.891 Year
- Lifetime PRO Version$12.49
Questions
Is ELECTROtools free?
Is Electronics Engineer Helper free?
Which has better reviews, ELECTROtools or Electronics Engineer Helper?
Do ELECTROtools or Electronics Engineer Helper have ads?
Which is updated more often, ELECTROtools or Electronics Engineer Helper?
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