VoltPlan vs Crimp

VoltPlan alternative for 12 V wiring (2026)

Both let you build a complete diagram in the browser. VoltPlan leads with templates, free web use, a companion mobile app and an MCP server. Crimp leads with exact component profiles, explicit terminals and checks that run across the whole system.

Checked Aug 31, 2026 · 12 V DC planning · your manual wins

VoltPlan 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 real reasons to choose it.

Complete design

A whole-system canvas

Its public workflow covers batteries, loads, chargers, solar and distribution for RV, boat and off-grid systems.

Fast start

Templates before a blank canvas

VoltPlan starts you from an RV, boat or off-grid template, then lets you customize it.

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 gives you a separate mobile workflow, and its hosted MCP can generate diagrams and run calculations from compatible AI clients.

We checked VoltPlan's scope against its own public pages on Aug 31, 2026. This comparison is independent; Crimp is not affiliated with or endorsed by VoltPlan.

Side 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.

QuestionVoltPlanCrimp

Starting point: VoltPlanChoose an RV, boat or off-grid template, then customize it.; CrimpStart blank or from an editable example and place the parts you actually own.
Component model: VoltPlanA broad component library presented around fast system assembly.; Crimp333 published branded profiles with explicit terminal maps, plus custom parts.
Electrical output: VoltPlanAutomatic cable and fuse sizing with voltage-drop checks.; CrimpABYC-based per-cable sizing plus system checks that point back to a part or run.
Automation: VoltPlanA public MCP server can generate diagrams and calculations programmatically.; CrimpThe system canvas is deliberately manual today; the drawing stays the source of truth you can inspect.
Handoff: VoltPlanDiagram download and a live link; mobile handoff through Cable.; CrimpProject file, printable schematic, cable schedule, parts list and sharing from one model.

Which one

Pick the one that finishes your job.

A fair comparison makes it easy to choose the other product when it fits better. So here is when it does.

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 how you work.
You prefer VoltPlan's broad, quick system-building approach.

Open VoltPlan

Choose Crimp when…

You want named components drawn with 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 what you need to hand over.

Open Crimp

Worth saying plainly

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.

Common questions

Is Crimp a VoltPlan alternative?

Yes. The useful answer depends on which feature sent you looking 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 paid exports and blueprint 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.

Keep goingTry one real cable run in CrimpOpen a blank canvas without an account, add the parts you own and see the plan you get before you switch tools.

Sources

Checked at the source.

The VoltPlan claims come from its own public pages. The Crimp claims link to the live methodology and component index. Recheck scope and pricing when you choose; both products change.

VoltPlanRV & boat electrical system designVoltPlan's own product page: diagrams, templates, sizing, exports and sharing as they describe them.VoltPlanWiring Diagram MCPWhat VoltPlan says its programmatic generation and calculation tools cover.VoltPlanChangelog and roadmapVoltPlan's dated record of product and component-library changes, which is what we checked our claims against.CrimpSizing methodologyThe ABYC basis, assumptions and limits behind every number Crimp shows you.CrimpComponent libraryEvery branded part Crimp ships with, terminals included.

Comparing more than one tool? See the VoltPlan, 12V Sim, Wireframe and Marine Power Designer comparisons together

Crimp for AI agents · public beta

Ask your AI. Check the plan in Crimp.

Connect ChatGPT, Codex or Claude Code to look up components, calculate wire and DC-DC charger sizing, or build a small draft you can inspect and edit. Missing facts and assumptions stay visible.

Use Crimp with your AI

No Crimp account or API key required.