EEPocketworkbench
Electrical Engineering tools
$7.99 · Designed for iPad. Not verified for macOS.
Draw circuits and simulate them on your iPhone: operating point, transient, AC sweep and noise, with waveform plots. Includes 14 examples and a 45-part library.
A complete electrical engineering calculator suite in your pocket — Ohm's Law, reactance, trace width, and more. No ads, no subscription, no nonsense.
Pocket Workbench is a complete electrical engineering calculator suite built for engineers, technicians, students, and hobbyists — the tools you actually reach for at the bench, in the field, or mid-design.
No ads. No subscription. No account required. Just the calculators you need, done right.
CORE CALCULATORS
Ohm's Law solver — instantly solve for voltage, current, resistance, or power from any two known values
Voltage divider calculator
Reactance & resonance — capacitive reactance, inductive reactance, and LC resonant frequency
RC/RL time constants — including capacitor charging voltage over time
PCB trace width calculator — IPC-2221 standard, internal/external layers, any copper weight
Series/parallel resistor & capacitor combinations
Delta (Δ) ↔ Wye (Y) network converter
LED series resistor calculator
Capacitor stored charge & energy
SMD resistor code decoder (3/4-digit and R-notation)
dB power ratio, voltage ratio, and dBm ↔ watts converters
Skin depth calculator with material presets
Battery life estimator
COMPONENT SCANNER (bonus feature) Point your camera at a resistor, inductor, or capacitor and Sohm will attempt to read its value automatically — color bands for resistors and inductors, printed codes for capacitors. This feature is actively improving; the calculators above are the reliable core of the app.
Built for real work: clean interface, fast input, accurate formulas — nothing you have to dig through menus to find.
Whether you're laying out a PCB, sizing a trace, decoding a resistor, or just double-checking Ohm's Law at 2am, Pocket Workbench has it covered.
Ratings & Reviews
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Introducing Pocket SPICE, a full circuit simulator inside Pocket Workbench.
- Draw circuits on a schematic canvas or write SPICE netlists
- Operating point, transient, AC sweep (Bode plots), DC sweep and noise analyses
- Resistors, capacitors, inductors, diodes, LEDs, zeners, BJTs, MOSFETs, op-amps, switches and transformers
- Built-in library of common parts: 1N4148, 2N3904, 2N7000, LM741 and more
- Waveform plots with cursor readout, zoom, measurements and CSV export
- Monte Carlo, temperature and parameter sweeps
- Thevenin / Norton equivalent tool
- SPICE netlist import and export, with .subckt, .param and .lib support
- Save your circuits and start from 14 ready-made examples
- Built-in engine self-test to verify results on your device
Built-in device models are simplified behavioral models for learning and quick what-if checks.
The developer, Shashwat Patel, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shashwat Patel
- Size
- 2.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English
- Age Classification
13+
- 13+
- Copyright
- © 2026 Shashwat Patel
