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Developer Tools · head to head

Keil MDK vs Lucidchart

Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite
Lucidchart logo

Lucidchart

Technology

Intelligent diagramming for every team

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site; Lucidchart interface can overwhelm new users due to extensive features and customization options
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Keil MDK and Lucidchart differ
AttributeKeil MDKLucidchart
Pricing modelfreemiumUnknown
PlatformsWebWeb, Desktop, macOS, Windows
CategoryDeveloper ToolsTechnology
FoundedUnknown2010

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

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Keil MDK

Nothing recorded that Lucidchart does not also cover.

Only in Lucidchart

  • Flowcharts & diagrams
  • Process mapping
  • Mind maps
  • Wireframes & mockups
  • Network diagrams
  • Data visualization
  • Real-time collaboration
  • Presentation mode

What people use each for

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

Keil MDK

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

Lucidchart

  • Process documentationnot Keil MDK
  • System architecturenot Keil MDK
  • Workflow designnot Keil MDK
  • Brainstormingnot Keil MDK
  • Technical documentationnot Keil MDK

Where each one falls short

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

Keil MDK

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

Lucidchart

  • Interface can overwhelm new users due to extensive features and customization options
  • Drag-and-drop canvas can feel clunky compared to modern whiteboard tools like Miro

Pricing, plan by plan

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Lucidchart

Free
  • FreeFree
    • 3 documents
    • 60 shapes
    • Basic templates
  • Individual$7.95/month
    • Unlimited documents
    • Advanced templates
    • Cloud storage
  • Team$9/editor/month
    • Real-time collaboration
    • Team management
    • All integrations
  • Enterprise$undefined/custom
    • Advanced security
    • SSO
    • Dedicated support

Which should you pick?

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Choose Lucidchart if

  • You need flowcharts & diagrams.
  • You want to start without paying.
  • You work on Web, Desktop, macOS, Windows.
  • You also want process mapping.
Lucidchart review

Questions people ask

Is Keil MDK or Lucidchart better?
Neither clearly leads. Keil MDK starts at Free and Lucidchart at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keil MDK or Lucidchart?
Keil MDK starts at Free and Lucidchart at Free.
Does Keil MDK or Lucidchart run on more platforms?
Keil MDK runs on Web. Lucidchart runs on Web, Desktop, macOS, Windows.
Can I use Keil MDK for free?
Both have a free tier, so you can try either at no cost before committing.
What is Keil MDK best used for?
Keil MDK is most often used for embedded software development, arm microcontroller programming, professional development environments. Of those, embedded software development and arm microcontroller programming are not what Lucidchart is typically brought in for.
What can Keil MDK do that Lucidchart cannot?
Lucidchart covers Flowcharts & diagrams, Process mapping, Mind maps, Wireframes & mockups.

Answered from the vendors’ own pages

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
Lucidchart: What pricing plans does Lucidchart offer?

Lucidchart has a free plan (3 documents, 60 shapes), Individual plan ($7.95/month), Team plan ($9/editor/month), and Enterprise with custom pricing.

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
Lucidchart: Can I use Lucidchart offline?

Lucidchart is a cloud-based platform, but offers an offline desktop option for users who need to work without internet access.

Source
Lucidchart: What compliance certifications does Lucidchart have?

Lucidchart provides SOC 2 Type II, FedRAMP, HIPAA BAA, and GDPR compliance, making it suitable for regulated industries.

Source
Lucidchart: Does Lucidchart have AI diagram generation?

Yes, Lucidchart uses AI to auto-generate flowcharts, UML diagrams, ER diagrams, and org charts from text prompts, Excel data, CSV files, code snippets, or database schemas.

Source
Lucidchart: What integrations does Lucidchart support?

Lucidchart integrates with Microsoft Teams, Slack, Jira, Confluence, Google Workspace, and Salesforce for seamless workflow integration.

Source
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