Schematic editor
Schematic editor
Draw analog and RF circuits with ports, components, net labels, and touch-friendly editing.
Monolith CircuitRF / analog
Analog and RF circuits, tuned anywhere.
Monolith Circuit is a mobile and desktop app to create schematics, run circuit simulations, tune components, and inspect RF measurements.
SchematicsAC / transientS-parametersSmith chartComponent tuner
Run / Live
Product proof
Designed for real circuit work.
Build a schematic, choose an analysis, add measurements, and tune values without leaving your device.
Measurements
Measurements and plots
Inspect traces, markers, frequency response, and derived measurements.
RF
RF and Smith chart
Analyze S-parameters, return loss, insertion loss, impedance, and Smith chart trajectories.
Features
From schematic to measurement.
Touch-friendly schematic editor
Create circuits with components, ports, labels, and reusable sheets on mobile, tablet, or desktop.
Simulation results
Run AC, transient, and RF analyses with clean plots, markers, and trace controls.
RF tools
Inspect S-parameters, return loss, insertion loss, Smith charts, gain, and stability metrics.
Component tuner
Tune component values and immediately see how the circuit response changes.
Workflow
From schematic to insight.
Build a schematic, choose an analysis, add measurements, and tune values without leaving your device.
01
Draw the circuit
Place components, connect nets, and define ports.
02
Choose analysis
Run AC, transient, or RF simulations.
03
Add measurements
Plot voltages, S-parameters, losses, and markers.
04
Tune values
Adjust components and compare the response.
RF Tools
Built for RF experiments.
Monolith Circuit includes RF-focused measurements alongside everyday analog simulation: S-parameters, return loss, insertion loss, Smith chart trajectories, gain metrics, stability factors, and target-frequency markers.
S11 / S21 / S12 / S22
Return loss and insertion loss
Smith chart markers
Gain and stability metrics
Matching and tuning workflow
Analog
Useful for everyday analog circuits.
Use Monolith Circuit for filters, dividers, amplifiers, diode circuits, RC transients, frequency response checks, and quick what-if experiments.
AC frequency responseTransient waveformsVoltage measurementsComponent tuningExample circuits
Screenshots
A workspace that follows the circuit.
Real app screens from projects, schematic editing, RF plots, Smith chart inspection, and tuning.
Projects
Schematics list
Schematic editor
Rectangular plot
Smith chart
Component tuner
Download
Start with a circuit. End with a measurement.
Available soon for iOS, Android, and desktop.
Planned release: June 30, 2026 — about three weeks from now.
FAQ
Is Monolith Circuit a PCB design tool?
Not yet. Monolith Circuit focuses on schematic capture, circuit simulation, measurements, plots, and analog/RF tuning.
Is it a replacement for ADS, AWR, or LTspice?
No. It is a lightweight workspace for quick circuit experiments, mobile review, and RF/analog tuning. It is designed to complement desktop engineering tools.
What can I simulate?
The first versions focus on analog circuits, AC and transient analysis, S-parameters, Smith charts, and component tuning.
Is it mobile only?
No. The interface is designed for mobile, tablet, and desktop screens.
What simulator workflow does it use?
Monolith Circuit uses a SPICE-compatible simulation workflow for circuit analysis.