Decision library
Compare mobile circuit simulators by platform, SPICE support, RF measurements and practical limits. Choose a workflow for learning, analog or RF work.
For S11, S21 and matching on iPhone or iPad, start with Tersa's RF workflow. For animated circuit explanations across mobile platforms, look at EveryCircuit. If you prefer a virtual breadboard with ngspice, consider Breadpad. iCircuit offers live analog/digital exploration with meters and a scope; CircuitSim is a browser option for shared work.
Need a mature desktop SPICE environment and an existing model library? Compare the LTspice workflow before moving a design to a mobile app. A familiar schematic does not guarantee equivalent model support.
Published by the Tersa team. Official product documentation checked on . This is a documentation-based selection guide, not a hands-on benchmark or accuracy ranking. “Not verified” means the reviewed sources did not establish a capability, not that it is absent. Store availability and plan limits can change; follow the sources before purchasing.
Choose by analysis and device, not by the longest feature list. Rows are not ranked.
Touch-first analog and RF work: DC, AC and transient analysis, two-port S-parameters, Smith charts and component tuning.
Supports selected SPICE models and subcircuits, not every simulator dialect. Web CAD is a separate browser workspace; do not assume identical features or automatic project transfer.
Interactive analog/digital learning with animated voltage and current. Its custom, SPICE-like engine supports transient and small-signal AC analysis with Bode plots.
Free personal circuits are limited to five components. Standard SPICE model import and an RF S-parameter/Smith workflow were not verified in the reviewed documentation.
Always-running analog/digital experiments with a multimeter, a time-domain oscilloscope and custom subcircuits.
The reviewed documentation does not identify a SPICE engine or establish small-signal AC/Bode or RF S-parameter support. Check those requirements before choosing it for a frequency-domain task.
A visual breadboard backed by ngspice, with operating-point and transient views, a SPICE shell and additional analysis tools.
Free charts show up to two signals/probes. Several advanced tools are Premium; the advertised AC interface is Premium, while the manual also describes analysis directives in the SPICE shell.
Browser-based ngspice/WebAssembly simulation, circuit sharing and classroom work. Its published analyses include transient, AC sweep and operating point.
Not a native iPhone/iPad app. Basic currently allows five circuits, five custom components and five components per circuit. DC sweep requires Standard or higher; fully offline use is not supported.
Use a circuit with an expected result. For an unloaded RC low-pass filter with R = 1 kΩ and C = 100 nF, the analytical cutoff is about 1.59 kHz. If the app supports small-signal AC, sweep around that frequency and check the output-to-input gain. In a transient view, a step should reach about 63% of its final value after one time constant, 100 µs. This is a suggested check, not a result measured across the products above.
Available for iPhone and iPad. Inspect the actual workflow and supported analyses before downloading.
See the iPhone and iPad simulator
Compare Tersa EDA and EveryCircuit for schematic capture, circuit simulation, RF measurements, Smith charts, visual learning, plots, and tuning.
Compare Tersa EDA and VoltSim for browser schematic capture, SPICE-compatible simulation, RF analysis, plots, Smith charts, and component tuning.
Explore Tersa EDA for online schematic capture, SPICE-compatible analysis, RF plots, Smith chart inspection, markers, and live component tuning.
Compare Tersa EDA and LTspice for schematic capture, AC analysis, Bode plots, RF S-parameters, Smith charts, tuning, and cross-device work.
Compare Tersa EDA and CircuitLab for browser schematic capture, analog simulation, RF S-parameters, Smith chart work, plots, sharing, and engineering education.
Compare Tersa EDA and Altium Designer simulation for focused RF experiments, SPICE analysis, S-parameters, Smith charts, and broader PCB workflows.
