Tersa EDA

LTspice comparison

LTspice alternative for browser-based RF and analog tuning

Compare Tersa EDA and LTspice for schematic capture, AC analysis, Bode plots, RF S-parameters, Smith charts, tuning, and cross-device work.

Get Tersa on the App Store Explore SPICE workflow

Reviewed: 2026-07-29

LTspice strength

mature desktop SPICE

Tersa focus

browser RF / analog tuning

Shared ground

schematic + frequency response

Decision

workflow, models, maturity

01

Use Tersa when the circuit review must travel

Tersa EDA is designed around a compact schematic-to-measurement loop that can be reviewed on a browser, tablet, or desktop surface. Its public direction puts RF measurements, Smith chart inspection, markers, and component tuning close to the circuit instead of treating them as separate utilities.

  • Open the same engineering context across screen sizes
  • Move from a schematic to RF plots and markers
  • Inspect S11 and S21 alongside impedance behavior
  • Verify the analyses and models needed for your circuit

02

Use LTspice when model depth and maturity lead

LTspice is a mature, free desktop SPICE simulator from Analog Devices. Its strengths include analog simulation performance, a waveform viewer, a broad model ecosystem, demo circuits, and established learning material. Engineers with an existing LTspice library should count migration and model compatibility as real decision factors.

  • Established Windows and macOS desktop application
  • Large body of device models and reference circuits
  • Strong transient, AC, noise, and waveform workflows
  • Mature community knowledge and vendor documentation

03

This is not a claim of feature parity

Tersa is not presented as a drop-in replacement for every LTspice feature. The useful comparison is narrower: choose Tersa for portable RF and analog exploration with connected measurement views; keep LTspice when its model ecosystem, directives, automation, or mature desktop workflow are requirements.

  • List the analyses your design actually needs
  • Check every required device model before switching
  • Compare the complete measurement loop, not screenshots alone
  • Keep both tools when they solve different stages well

Workflow comparison

Tersa EDA and LTspice

Compare the product scope and engineering workflow before moving a real circuit. This table reflects public product information, not claimed feature parity.

Published capabilities of Tersa and LTspice
CriterionTersa EDALTspice
DeliveryiPhone and iPad app on the App Store; separate browser-based Web CADInstalled desktop application for Windows and macOS
Core emphasisRF and analog tuning with connected measurement viewsHigh-performance SPICE simulation and waveform analysis
RF-specific surfaceS-parameters, Smith chart, markers, and tuning are central to the product directionRF work is possible through models and analysis setup, but it is not a dedicated RF workspace
Models and ecosystemCheck required models and analysis compatibility before moving a designMature Analog Devices models, examples, documentation, and community
Best reason to choosePortable focused experiments and fast review loopsMaturity, model depth, directives, and established desktop workflows

Primary sources

Check the product documentation

Published by the Tersa team using the official sources below. This is a documentation-based comparison, not a hands-on benchmark. Confirm current platform, model and plan support before switching.

Related workflows

Continue the RF design path

Move between matching theory, a practical Tersa workflow, S-parameter analysis, and Smith chart inspection.

SPICE AC analysis guide

Understand small-signal sweeps, gain, phase, and Bode plots.

CircuitLab alternative

Compare two browser-oriented circuit workflows.

500 MHz low-pass filter

Inspect a concrete RF filter and S-parameter example.

FAQ

Is Tersa EDA a complete LTspice replacement?

No. Tersa is a focused RF and analog tuning workspace released for iPhone and iPad. LTspice remains the stronger fit when mature SPICE features, a large model ecosystem, or established automation are essential.

Can both tools fit the same workflow?

Yes. A team can retain LTspice for model-heavy desktop simulation and use Tersa for portable schematic review, RF measurements, Smith chart inspection, and tuning experiments.

What should I test before moving a circuit?

Verify the required models, analysis types, directives, convergence behavior, expected measurements, and export needs with a representative circuit.