Comparison

Electronics Engineer Helper vs Onshape 3D CAD

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

Head to head
About

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.

Highlights
  • Datasheet search
  • Resistor color code calculator
  • Electronic schematic symbols
  • Pinouts guide
  • Ohm's law calculator
  • AWG converter
  • Unit converter
Features
Read full description

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/

About

Onshape 3D CAD

This professional CAD platform enables real-time collaboration on product design from any device. It offers parametric modeling tools, secure cloud storage, and version control, streamlining the design process for teams and individuals. Supports students and educators with free access for non-commercial projects.

Highlights
  • Parametric modeling tools
  • Real-time team collaboration
  • Cloud-based data management
  • Cross-device access
  • Version control and history
  • Commenting and feedback tools
Read full description

Onshape is a full mechanical CAD platform designed for professional users and extended teams. Create, edit, collaborate, and comment in real time with others from any computer or mobile device with an internet connection (free sign-up required). With Onshape’s secure cloud workspace teams can work together from anywhere on any device without the hassles of file management, IT overhead, and license key distribution, helping engineers focus more on doing their best work. Parametric CAD: • Design parts together in Part Studios with a full suite of parametric modeling tools • Create mechanical Assemblies to capture complex motion Ease of Access: • Create, edit, and view from any computer or mobile device (internet connection required) • Begin a project from one device and seamlessly continue from another Collaboration: • Instantly share your CAD data with your teams and partners. Monitor, change, and revoke permissions at any time • Work together with other users and view changes in real-time as they are made • Use Follow mode to see exactly what your teammate sees and add suggestions using Onshape’s built-in commenting tools Data Management: • Maintain a single source of truth for your data, no more sending around or checking in and out of files • Never worry about losing your work, all of your changes are saved automatically • Explore multiple design ideas in parallel and create professional release and approval processes for your designs Onshape for iOS also features Apple Pencil support for more intuitive sketching, navigation, and precise selection. Onshape proudly supports students and educators free of charge and is available free for non-commercial projects in an open-source public work space. Since Onshape is updated every few weeks with dozens of new features and user-requested enhancements, keep an eye out for update notifications from the Apple App Store.

Screenshots

Electronics Engineer Helper4 screens
Onshape 3D CAD4 screens

Verdict

The call

The clearest difference is review sentiment: Electronics Engineer Helper at 98% against Onshape 3D CAD's 47%. Electronics Engineer Helper also leads on rating (4.8 vs 3.5). Onshape 3D CAD's advantage is in-app purchases (none vs 2). On price, ratings volume, update cadence and ads 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. Electronics Engineer Helper sells 2 in-app purchases, starting at $4.89 per year. Onshape 3D CAD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Electronics Engineer Helper holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 436 and 412 respectively. Written reviews point the same way: 98% of Electronics Engineer Helper's written reviews are positive against 47% of Onshape 3D CAD's.

UpkeepUpdate frequency

Electronics Engineer Helper ships an update monthly, Onshape 3D CAD every 3 weeks. The most recent releases landed on October 11, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 7 level
Electronics Engineer Helper versus Onshape 3D CAD: the parameters behind the verdict, then further details
ParameterElectronics Engineer HelperOnshape 3D CAD
PriceFreeFree
Rating4.8 (436 ratings) — better3.5 (412 ratings)
Positive reviews97.7% of reviews — better47.4% of reviews
Number of ratings436 — better412
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size92 MB77 MB
Age rating12+4+
DeveloperRostyslav DovhaliukPTC Inc.

Customer experience

Electronics Engineer Helper

All ratings436 ratings
Positive97.5%
Neutral1.6%
Negative0.9%
Written reviews172 reviews
Positive97.7%
Neutral0.6%
Negative1.7%

Onshape 3D CAD

All ratings412 ratings
Positive61.7%
Neutral5.8%
Negative32.5%
Written reviews424 reviews
Positive47.4%
Neutral6.4%
Negative46.2%

User reviews

Electronics Engineer Helper

From 436 App Store ratings

What we love

  • 🚀 Useful tool
  • 👍 Comprehensive reference
  • 👍 Intuitive and well-designed
  • 👍 Saves time and effort
  • 👍 Excellent for beginners and professionals

Room to improve

  • 💰 Some advanced features require paid subscription
  • 🇷🇺 Some content in Russian language

Onshape 3D CAD

From 412 App Store ratings

What we love

  • 🚀 Powerful CAD features
  • 🌐 Accessible from any device
  • 👍 Intuitive interface
  • 💡 Great for on-site work
  • 🌟 Exceptional for a free app

Room to improve

  • 🐛 Crashes and stability issues
  • 👎 Unintuitive and clunky UI
  • 🔒 Requires account sign-up
  • 💰 Expensive paid plans
  • 🔍 Difficult to find/use key features

Bugs and 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

Onshape 3D CAD

Reported bugs

5 issues
  • Frequent crashes and freezes
  • Dimensions not visible/editable
  • Rotation/view controls unreliable
  • Unable to create account
  • Incompatible with older devices

Requested features

5 requests
  • Add keyboard shortcuts
  • Improve dimensioning tools
  • Allow private file storage
  • Optimize for iPad/Apple Pencil
  • Provide better documentation/tutorials

In-app purchases

2 purchases

Electronics Engineer Helper

Subscriptions1
  • 1 Year Subscription1 Month trial$4.891 Year
One-time1
  • Lifetime PRO Version$12.49
None

Onshape 3D CAD

No in-app purchases

Questions

Is Electronics Engineer Helper free?
Electronics Engineer Helper is free to download, with in-app purchases available.
Is Onshape 3D CAD free?
Onshape 3D CAD is free to download, with no in-app purchases.
Which has better reviews, Electronics Engineer Helper or Onshape 3D CAD?
Electronics Engineer Helper is rated higher. Electronics Engineer Helper averages 4.8 out of 5 from 436 ratings, while Onshape 3D CAD averages 3.5 from 412 ratings.
Do Electronics Engineer Helper or Onshape 3D CAD have ads?
Neither Electronics Engineer Helper nor Onshape 3D CAD shows ads.
Which is updated more often, Electronics Engineer Helper or Onshape 3D CAD?
Electronics Engineer Helper ships an update monthly, and Onshape 3D CAD every 3 weeks. Most recently, Electronics Engineer Helper was updated on October 11, 2026 and Onshape 3D CAD on October 10, 2026.

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