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Web Development · head to head

Carrd vs Keil MDK

Carrd logo

Carrd

Web Development

Ultra-affordable one-page site builder.

From
Free
Free plan
Yes
Full reviewWebsite
Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Carrd free tier strictly limited to 3 sites; any additional sites require upgrading to Pro; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Carrd and Keil MDK actually diverge.

Attributes where Carrd and Keil MDK differ
AttributeCarrdKeil MDK
PlatformsWeb, MobileWeb
CategoryWeb DevelopmentDeveloper Tools

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), user rating (Not yet rated).

What people use each for

The jobs each tool is most often brought in to do.

Carrd

  • Indie makers and solopreneurs building personal portfolios or landing pagesnot Keil MDK
  • Small business owners requiring minimal online presence at low costnot Keil MDK
  • Link-in-bio alternatives for social media profiles and contact pagesnot Keil MDK
  • Email capture pages for newsletters or lead magnetsnot Keil MDK
  • Cost-conscious teams requiring a cheap website alternative to Webflow or Squarespacenot Keil MDK

Keil MDK

  • Embedded software developmentnot Carrd
  • ARM microcontroller programmingnot Carrd
  • Professional development environmentsnot Carrd

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Carrd

  • Free tier strictly limited to 3 sites; any additional sites require upgrading to Pro
  • Pro plan includes Carrd branding removal but still lacks advanced features (e-commerce, multi-step funnels, complex forms)
  • Single-page design only; does not support multi-page websites or complex site structures
  • Limited template library compared to competitors like Leadpages or Unbounce
  • Annual payment required for Pro tier; no monthly payment option
  • No native A/B testing, analytics dashboard or conversion optimisation tools built-in

Keil MDK

  • Pricing for Essential and Professional subscriptions not disclosed on primary site
  • Customers must contact Arm Developer Tools store for subscription rates

Pricing, plan by plan

Carrd

Free
  • FreeFree
    • 3 sites
    • Responsive design
    • Templates and blank pages
  • Pro$19/year
    • Unlimited sites
    • Custom domain with SSL
    • Contact forms

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Which should you pick?

Choose Carrd if

  • You want to start without paying.
  • You work on Web, Mobile.
Carrd review

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Questions people ask

Is Carrd or Keil MDK better?
Neither clearly leads. Carrd starts at Free and Keil MDK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Carrd or Keil MDK?
Carrd starts at Free and Keil MDK at Free.
Does Carrd or Keil MDK run on more platforms?
Carrd runs on Web, Mobile. Keil MDK runs on Web.
Can I use Carrd for free?
Both have a free tier, so you can try either at no cost before committing.
What is Carrd best used for?
Carrd is most often used for indie makers and solopreneurs building personal portfolios or landing pages, small business owners requiring minimal online presence at low cost, link-in-bio alternatives for social media profiles and contact pages, email capture pages for newsletters or lead magnets. Of those, indie makers and solopreneurs building personal portfolios or landing pages and small business owners requiring minimal online presence at low cost are not what Keil MDK is typically brought in for.

Answered from the vendors’ own pages

Carrd: How much does Carrd cost?

Carrd is free for up to 3 sites. The Pro plan costs $19/year and enables unlimited sites with custom domains, forms and integrations.

Source
Keil MDK: Does Keil MDK have a free version?

Yes, Keil MDK Community Edition is free for non-commercial projects. Essential and Professional editions are available as monthly or annual subscriptions.

Source
Carrd: Can I use Carrd for e-commerce?

Carrd's Pro plan supports payment forms with Stripe integration, but it is not a full e-commerce platform. Single-product sales or payment collection is possible, but inventory management and complex product catalogs are not supported.

Source
Keil MDK: How much do Keil MDK paid editions cost?

Specific pricing for Essential and Professional editions is not published on the main site. Rates are available from the Arm Developer Tools store or by contacting Arm sales.

Source
Carrd: Can I create multi-page websites with Carrd?

No. Carrd is designed for single-page sites only. For multi-page websites, you would need to use a full website builder like Webflow or Squarespace.

Source
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