Third-party model use can require matching model definitions, symbols, and library files with the schematic.
When sharing a project, missing associated files can prevent another user from loading or simulating the intended circuit.
Evidence source ↗L
LTspice
LTspice is desktop SPICE software for drawing analog circuits, simulating their behavior, and viewing waveforms. Analog Devices distributes it free for supported Windows and macOS versions.
5 key claims verifiedOur editorial team checked this profile against vendor documentation, product documentation. Supported by 3 documented sources.
Editorial overview
Aggregated Overview
The official material verifies schematic capture, circuit simulation, waveform viewing, component models, demo circuits, and command-line batch options. The software is free, but no reliable aggregate user-review rating was verified. Scores are editorial assessments, not hands-on test results.
This profile combines documented product information and independent evidence where available. It is not a hands-on test unless TechZella explicitly identifies one.
Overview
LTspice is a desktop SPICE simulator from Analog Devices. It combines schematic capture, circuit simulation, and waveform viewing for analog-circuit analysis. The official download page lists Windows and macOS versions and describes the software as free.
Analog Devices also provides tutorials, demo circuits, and models. Its design tools can export circuit schematics to LTspice for additional simulation. The official downloads page does not list a native Linux version.
LTspice Decision Snapshot
A quick way to understand who this product may suit, where its limits matter, and which facts are most relevant before you compare alternatives.
Best suited to
Electronics learners and engineers who need a free desktop tool to construct and simulate analog circuits, inspect waveforms, and work with manufacturer-provided or imported SPICE models.
Look elsewhere if
Buyers needing an officially listed Linux download, an integrated PCB-design workflow, or a documented public API should assess other tools or their surrounding workflow, and should evaluate alternatives such as KiCad or QSPICE instead.
Platforms
Desktop, macOS, Windows
TechZella assessment
8.0/10
LTspice — What Sets It Apart?
These are the product-specific differences that may matter when deciding whether the software fits your workflow. They are based on documented evidence rather than a universal ranking.
- The official download page lists the application as free and provides current Windows x64, Windows ARM64, and macOS downloads.
- Analog Devices supplies example circuits, tutorials, and product-model resources alongside the simulator.
- Analog Devices design tools can export schematic files for further simulation in LTspice.
LTspice Pros & Cons
Pros
- Free desktop software with schematic capture, simulation, and waveform viewing.
- Analog Devices provides tutorials, model resources, and demo circuits.
- Supports third-party SPICE model imports.
- Selected Analog Devices design tools export schematics for further LTspice simulation.
Cons
- The official download page does not list native Linux support.
- Projects using external models can require coordinated model, symbol, and library files.
- Official materials reviewed document command-line options but do not verify a public API.
LTspice Gotchas & Operational Limits
These are documented constraints or practical friction points that may matter before you adopt the product.
The official download page marks older Windows XP, macOS, and LTspice XVII downloads as end of support.
Users on older systems or versions should check the supported downloads before relying on those legacy installers.
Evidence source ↗LTspice Pricing & Plans
Free
$0
Free
Analog Devices provides LTspice as free downloadable desktop software.
Check current pricing →Pricing may change. Verify current plans on the vendor's website.
LTspice Competitors & Alternatives
Compare similar products directly, then see which alternatives may make more sense when your requirements differ.
At a glance
Developer Tools| Decision factor | LTspice | KiCad | QSPICE |
|---|---|---|---|
| Pricing model | Analog Devices describes LTspice as free. | KiCad describes its EDA suite as free and open source. Source ↗ | Qorvo states QSPICE is free for commercial use. Source ↗ |
| Supported desktop operating systems | The official LTspice download page lists Windows and macOS. | KiCad lists Windows, macOS, and Linux downloads. Source ↗ | Qorvo lists Windows 10 64-bit and Windows 11 system requirements for QSPICE. Source ↗ |
| Simulation workflow | LTspice provides schematic capture, SPICE simulation, and waveform viewing. | KiCad integrates ngspice simulation within its schematic editor and supports AC sweep, DC transfer, operating point, and transient analyses. Source ↗ | Qorvo describes a downloadable local simulator and lists included C++ and Verilog compilers. Source ↗ |
Only factors supported by the available research are shown. The comparison is descriptive, not a ranking.
Direct competitors
These products address broadly similar requirements. The descriptions focus on documented reasons a buyer might compare them with LTspice.
QSPICEPricing model: Qorvo states QSPICE is free for commercial use.
LTspice Features
Circuit design and simulation
- Graphical schematic capture
- SPICE circuit simulation
- Waveform viewer and schematic probing
- Transient, AC, and noise analysis tutorials
- Command-line simulation and batch options
Models and resources
- Analog Devices macromodels and demo circuits
- Third-party .MODEL and .SUBCKT model import
- Export support from selected Analog Devices design tools
LTspice Specifications
| License | Free download |
|---|---|
| Deployment | Desktop application |
| Officially listed platforms | Windows 10/11 x64, Windows 11 ARM64, macOS |
| Native Linux download | Not listed on the official download page |
| File formats | .asc schematic; third-party model workflows may use .asy symbols and library/model files |
| Automation | Documented command-line run, batch, and netlist options |
| Public API |
Deployment & System Footprint
Verified installation, hosting, administration, or environment details that can affect implementation.
| Installation or hosting | Downloadable desktop software. The official download page lists Windows and macOS installers. Source ↗ |
|---|---|
| Automation | The LTspice quick reference documents command-line options including running simulations and batch mode. Source ↗ |
Migration & Lock-In
Documented portability, standards, export, or switching considerations. No switching-cost score is shown unless the evidence supports one.
Project files
Schematics use .asc files. Projects that use custom symbols or external models may also need .asy and library/model files to travel with the schematic.
Evidence source ↗Our evidence-based assessment
TechZella Score
A proprietary editorial score based on product capabilities, usability, value, performance, support and user sentiment evidence.
8.0/10Moderate confidence
The official material verifies schematic capture, circuit simulation, waveform viewing, component models, demo circuits, and command-line batch options. The software is free, but no reliable aggregate user-review rating was verified. Scores are editorial assessments, not hands-on test results.
Methodology v1.0. The assessment weighs feature coverage (25%), ease of use (15%), value for money (20%), performance (15%), support (10%) and user sentiment (15%), using researched product evidence and verified review evidence where available. It is a TechZella editorial assessment, not a direct user-review average.
Editorial transparency
Our Review Methodology
Key claims are linked to the sources used to verify them. This evidence record is separate from third-party user ratings.
TechZella evaluates software using documented product capabilities, pricing information, usability and value considerations, independent user evidence where available, and competitive context. The assessment is an editorial review, not a hands-on test unless one is explicitly identified. Our editorial assessment is based on 3 documented sources.
What TechZella adds
- The official download page lists the application as free and provides current Windows x64, Windows ARM64, and macOS downloads.
- Analog Devices supplies example circuits, tutorials, and product-model resources alongside the simulator.
- Analog Devices design tools can export schematic files for further simulation in LTspice.
Important limitations
- The official download page lists Windows and macOS downloads, but no native Linux download.
- Importing third-party models may require managing associated symbol, model, and library files alongside the schematic.
- Official materials document command-line batch options, but research did not verify a public software API.
Evidence-backed claimsLTspice is provided as free SPICE simulation software with schematic capture and a waveform viewer. The official download page lists Windows 10/11 x64, Windows 11 ARM64, and macOS downloads. LTspice supports importing third-party SPICE models. Analog Devices design tools can export schematics for LTspice simulation. The LTspice quick reference documents command-line run and batch options.
Analog Devices describes LTspice as free and identifies its simulator, schematic capture, and waveform viewer functions.
View source ↗Verified 2026-11-10The product page lists current installers and identifies older downloads as end of support.
View source ↗Verified 2026-11-10Analog Devices documents importing .MODEL and .SUBCKT models and explains the associated schematic and library files.
View source ↗Verified 2026-11-10The official page identifies Signal Chain Designer, Analog Filter Wizard, Photodiode Wizard, Precision ADC Driver Tool, and LTpowerCAD as tools that export to LTspice.
View source ↗Verified 2026-11-10The reference lists flags including -run, -b, and -netlist.
View source ↗Verified 2026-11-10LTspice FAQs
Answers begin with the clearest available response, followed by the context that helps you act on it.
Is LTspice free?
Yes. Analog Devices describes LTspice as free software and provides downloads on its official product page.
Does LTspice run on Linux?
No. The official download page lists Windows and macOS downloads but does not list a native Linux download.
Can LTspice import third-party component models?
Yes. Analog Devices documents importing .MODEL and .SUBCKT models, with associated symbols and library files where needed.
Does LTspice have an API?
The reviewed official materials document command-line options, including simulation and batch flags. They do not establish a public software API.
Is there a free trial?
Yes. The product is listed as free to download, rather than as a time-limited trial.
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