Complete design
A whole-system canvas
Its public workflow covers batteries, loads, chargers, solar and distribution for RV, boat and off-grid systems.
VoltPlan vs Crimp
VoltPlan alternative for 12 V wiring (2026)
Both products let you build a complete personal diagram in the browser. VoltPlan leads with templates, a free web workflow, a companion mobile app and an MCP server. Crimp leads with exact component profiles, explicit terminals and system-wide installation diagnostics.
Reviewed Aug 31, 2026Scope 12 V DC planningRule Exact manuals win
01VoltPlan in 2026
What VoltPlan does well.
VoltPlan's current public product is a complete 12 V design tool, not a single-circuit calculator. These are meaningful reasons to choose it.
Fast start
Templates before blank canvas
VoltPlan explicitly starts with RV, boat and off-grid templates, then lets the user customize the system.
Access
Free web use without signup
The current homepage advertises personal web diagrams with no signup required, plus download and live-link sharing.
Automation
Mobile and MCP routes
Cable by VoltPlan provides a separate mobile workflow, while its hosted MCP can generate diagrams and run calculations from compatible AI clients.
Product scope checked against the official public pages on 31 August 2026. This comparison is independent; Crimp is not affiliated with or endorsed by VoltPlan.
02Side by side
VoltPlan vs Crimp.
VoltPlan and Crimp overlap most at the canvas. The sharper differences are what starts the design, how parts are represented and where the final evidence lives.
| Question | VoltPlan | Crimp |
|---|---|---|
| Starting point | Choose an RV, boat or off-grid template, then customize it. | Start blank or from an editable example and place the parts you actually own. |
| Component model | A broad component library presented around fast system assembly. | 229 published branded profiles with explicit terminal maps, plus custom parts. |
| Electrical output | Automatic cable and fuse sizing with voltage-drop checks. | ABYC-based per-cable sizing plus system diagnostics that point back to a part or run. |
| Automation | A public MCP server can generate diagrams and calculations programmatically. | The system canvas is deliberately manual today; the drawing remains the inspectable source of truth. |
| Handoff | Diagram download and a live link; mobile handoff through Cable. | Project file, printable schematic, cable schedule, parts list and sharing from one model. |
03Decision
Choose for the work you actually need to finish.
A credible comparison should make it easier to choose the other product when it is the better fit.
Choose VoltPlan when…
- You want a template to do more of the first-draft work.
- A free hosted MCP or a dedicated iPhone/iPad companion is central to your workflow.
- You prefer VoltPlan's broad, quick system-building approach.
Choose Crimp when…
- You want named components represented by their actual connection points.
- You need cable results and system issues attached to the drawing you will keep editing.
- An ABYC-based boat or vehicle plan, cable schedule and parts record are the main deliverables.
VoltPlan is the closer choice when automated generation is the requirement. Crimp is the closer choice when the design review starts with the exact topology on the page.
04Common questions
Is Crimp a VoltPlan alternative?
Yes—but the useful answer depends on the feature that made you search for an alternative in the first place.
Is Crimp a free VoltPlan alternative?
You can open Crimp and keep a local project without creating an account. Compare any paid export or cloud features at the moment you choose, because both products can change their offers.
Does Crimp have VoltPlan templates?
Crimp has editable example systems, but its workflow is more part-first than template-first. If selecting a near-finished RV or boat template is the priority, VoltPlan currently foregrounds that path more clearly.
Does Crimp replace VoltPlan's MCP server?
No. VoltPlan publishes a hosted MCP for programmatic generation and calculations. Crimp's whole-system AI drafting is currently disabled, so that is a real reason to choose VoltPlan.
05Sources
Current claims, checked at the source.
The VoltPlan claims come from its own public pages; Crimp claims link to the live methodology and component index. Recheck scope and pricing when you choose.
01VoltPlanRV & boat electrical system designOfficial product page for the diagram, template, sizing, export and sharing workflow.02VoltPlanWiring Diagram MCPOfficial scope for VoltPlan's programmatic generation and calculation tools.03VoltPlanChangelog and roadmapOfficial dated record of current product and component-library changes.04CrimpSizing methodologyCrimp's published ABYC basis, assumptions and limits for computed results.05CrimpComponent libraryThe current index of Crimp's published branded component profiles.