EEPocketworkbench
Shashwat Patel · Utilities
Independent analytics for this App Store listing. AppTracker is not affiliated with Shashwat Patel.
Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
Tap-to-place interactive circuit builder (resistors, batteries, wires, ground) on a grid Real Modified Nodal Analysis solver (the same technique SPICE-family simulators use) — solves for every node voltage and component current/power, not a simplified approximation Hand-verified against textbook series/parallel test cases Learn tab — now with diagrams: 27 educational articles covering the theory behind every calculator, organized into 6 categories 19 of those now have a native vector circuit diagram (Ohm's Law loop, resistor bands, capacitor/inductor symbols, reactance curve, series/parallel, dividers, Wheatstone bridge, delta-wye, RC charging curve, Zener regulator, transformer, resonance, RMS waveform, op-amp, trace cross-section, skin effect, wavelength, 555 timer) 26 calculators total, spanning: Core: Ohm's Law, voltage divider, reactance/resonance, RC/RL time constants, PCB trace width Combinations: series/parallel, delta-wye, standard values (E12/E24/E96), Wheatstone bridge, current divider Components: LED resistor, capacitor charge/energy, SMD code, wire gauge/ampacity, 555 timer, op-amp gain Power Design: Zener regulator, LM317, transformer ratio, thermal resistance, fuse sizing, battery C-rate RF & Power: dB/dBm/watts, skin depth, wavelength/antenna, RMS/peak converter Field: battery life estimator Retention & UX features: Calculation history (save/export as CSV/clear) Favorites (star any tool) Share result as image Scan log / informal parts bin (auto-tracks scanner readings + quantities) First-launch onboarding walkthrough App Store review prompt (triggers after real usage, not on launch) Home screen Quick Actions Colorful UI — category-coded icon tiles, brand accent tint Keyboard "Done" button everywhere
Price & rating history · US
Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.
Price · Free now · 2 changes on record
In-app purchases · US
No in-app purchases.
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About
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.
What's new · 3.0
Tap-to-place interactive circuit builder (resistors, batteries, wires, ground) on a grid Real Modified Nodal Analysis solver (the same technique SPICE-family simulators use) — solves for every node voltage and component current/power, not a simplified approximation Hand-verified against textbook series/parallel test cases Learn tab — now with diagrams: 27 educational articles covering the theory behind every calculator, organized into 6 categories 19 of those now have a native vector circuit diagram (Ohm's Law loop, resistor bands, capacitor/inductor symbols, reactance curve, series/parallel, dividers, Wheatstone bridge, delta-wye, RC charging curve, Zener regulator, transformer, resonance, RMS waveform, op-amp, trace cross-section, skin effect, wavelength, 555 timer) 26 calculators total, spanning: Core: Ohm's Law, voltage divider, reactance/resonance, RC/RL time constants, PCB trace width Combinations: series/parallel, delta-wye, standard values (E12/E24/E96), Wheatstone bridge, current divider Components: LED resistor, capacitor charge/energy, SMD code, wire gauge/ampacity, 555 timer, op-amp gain Power Design: Zener regulator, LM317, transformer ratio, thermal resistance, fuse sizing, battery C-rate RF & Power: dB/dBm/watts, skin depth, wavelength/antenna, RMS/peak converter Field: battery life estimator Retention & UX features: Calculation history (save/export as CSV/clear) Favorites (star any tool) Share result as image Scan log / informal parts bin (auto-tracks scanner readings + quantities) First-launch onboarding walkthrough App Store review prompt (triggers after real usage, not on launch) Home screen Quick Actions Colorful UI — category-coded icon tiles, brand accent tint Keyboard "Done" button everywhere
Details