Electronics Engineer Helper Downloads & RevenueElectronics Engineer Helper · App Store
Electronics Engineer Helper is #72 in Productivity Grossing in Russia and charting in 1 of 30 countries we track.
Updated 14 Nov 2026 · rankings refresh through the day
DeveloperRostyslav Dovhaliuk
CategoryProductivity
PriceFree
Released
Rating★ 4.9 (1.1k)
Version26.10
Age rating12+
First seen by us
28 Sep 2026
28 Sep 2026Installs (est.)100k+ worldwide
Electronics Engineer Helper update history & changes
Last change · 4 events since 27 Jul 2014Full timeline ↓Full timeline · 4 events
- 📦Electronics Engineer Helper updated to version 26.10- [PRO] MOSFET and IGBT gate drive resistor calculator. Picks the gate resistor and checks the resulting switching time, losses and dV/dt.
- Size Measurement tool. Draws common component, wire and drill dimensions at actual size on screen, with a millimeter or inch ruler, so you can identify a part by holding it against the outline.
- Names of electronic schematic symbols in all standards are now translated into every language the app supports.
- Cardputer Adv pinout.
Big thank you to everybody who subscribed or purchased the PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav… more - 🆕Electronics Engineer Helper first spotted by AppInsider#86 in Top Grossing · Productivity · Russia
- 📦Electronics Engineer Helper version 26.09.2- 555 monostable calculator. Finds the timing resistor, capacitor or output pulse duration of a one-shot 555 circuit from the other two.
- New pinouts: OBD-II, 555, LM358, LM741, LM393, TL072, LM386.
Big thank you to everybody who subscribed or purchased the PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav… more - 🆕Electronics Engineer Helper released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.9 ★
1.1k ratings
Measured
Best rank now
#72
Productivity GrossingMeasured
New ratings a week
1
App Store, 4-week average
Measured
Electronics Engineer Helper on the App Store
App details
App ID
896429646
Publisher
Rostyslav Dovhaliuk
On the store since
Jul 2014
12 years on the store
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
12+
Languages
17
EN FR DE IT JA KO NB PL PT RU ZH ES …
Size
98 MB
Also listed in
Education
Electronics Engineer Helper downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Russia | ProductivityGrossing | #72 |
Apps near Electronics Engineer Helper on the chart
Productivity Grossing, around #72.
Ratings
App Store, worldwide.
Rating
4.9 ★
1.1k ratings
Measured
Ratings
1.1k
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
1
4-week average
Lifetime rating
4.9★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
56/100
faster than 60% of Productivity apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Electronics Engineer Helper
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 (m
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 (m
Latest updates
26.10
- [PRO] MOSFET and IGBT gate drive resistor calculator. Picks the gate resistor and checks the resulting switching time, losses and dV/dt.
- Size Measurement tool. Draws common component, wire and drill dimensions at actual size on screen, with a millimeter or inch ruler, so you can identify a part by holding it against the outline.
- Names of electronic schematic symbols in all standards are now translated into every language the app supports.
- Cardputer Adv pinout.
Big thank you to everybody who subscribed or purchased the PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav
26.09.2
- 555 monostable calculator. Finds the timing resistor, capacitor or output pulse duration of a one-shot 555 circuit from the other two.
- New pinouts: OBD-II, 555, LM358, LM741, LM393, TL072, LM386.
Big thank you to everybody who subscribed or purchased the PRO version. Your support helps to make this app even better. If you like this app, please rate it and leave a review.
Regards,
Rostyslav