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Developer Tools · head to head

Keil MDK vs Visor

Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Visit Keil MDKFull review
Visor logo

Visor

Project Management

The spreadsheet-native project management tool

From
Free
Free plan
Yes
Visit VisorFull review

The short version

  • Visor is a spreadsheet-native project management tool.
  • Keil MDK is free; Visor starts at $18/mo.
  • Where Keil MDK falls short: pricing for Essential and Professional subscriptions not disclosed on primary site.
  • Where Visor falls short: syncing is metered in credits, at 10,000 a month shared on free and 50,000 on Starter.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

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

Attributes where Keil MDK and Visor differ
AttributeKeil MDKVisor
CategoryDeveloper ToolsProject Management

Identical on both: starting price (Free), pricing model (Freemium), free tier (Yes), platforms (Web).

Not yet recorded: founded for Keil MDK.

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 Visor does not also cover.

Only in Visor

  • Two-way sync
  • Spreadsheet views
  • Gantt charts
  • Pivot tables
  • Custom fields
  • Jira
  • Asana
  • Salesforce

What people use each for

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

Keil MDK

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

Visor

  • Project and portfolio managementnot Keil MDK
  • Team collaborationnot Keil MDK
  • Data organization and reportingnot Keil MDK
  • Workflow automationnot 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

Visor

  • Integrations are capped by plan, at 1 on free, 2 on Starter and 3 on Team, so connecting Jira, Salesforce and HubSpot together needs the top tier
  • Syncing is metered in credits, at 10,000 a month shared on free and 50,000 on Starter
  • Extra credits are sold in booster packs at $50 for 250,000
  • The free plan is limited to 2 workbooks and 5 users
  • The flat rate Business plan is $750 a month billed annually

Pricing, plan by plan

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Visor

Free
  • FreeFree
    • Table and Board views only
    • Max 2 workbooks
    • Max 5 workspace members
  • Starter$18/mo
    • Gantt, Timeline and Dashboard views
    • Milestones and Jira dependencies
    • Up to 500 records per workbook
  • Team$24/mo
    • Unlimited free viewers
    • Unlimited workbooks
    • Private workbooks
  • Business$750/mo
    • Flat rate for up to 100 editors
    • Unlimited free viewers
    • 2,000,000 shared sync credits per month

Which should you pick?

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Choose Visor if

  • You need two-way sync.
  • You want to start without paying.
  • You also want spreadsheet views.
Visor review

Questions people ask

Is Keil MDK or Visor better?
Neither clearly leads. Keil MDK starts at Free and Visor at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keil MDK or Visor?
Keil MDK starts at Free and Visor at Free.
Does Keil MDK or Visor run on more platforms?
Both run on Web, so platform support will not decide this one for you.
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 Visor is typically brought in for.
What can Keil MDK do that Visor cannot?
Visor covers Two-way sync, Spreadsheet views, Gantt charts, Pivot tables.

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
Visor: How many workbooks and records can I have on each Visor plan?

The Free plan allows up to 2 workbooks with 250 records each. Starter includes up to 10 workbooks with 500 records each. Team and Business plans offer unlimited workbooks, with Team supporting 1,000 records per workbook and Business supporting the highest capacity.

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
Visor: What are sync credits in Visor and how many do I get?

Sync credits enable real-time synchronization between workbooks and external data sources. Free includes 10,000 credits per month, Starter gets 50,000, Team gets 100,000 per license, and Business includes 2,000,000 per month. Additional credits available for $37.50 per 250,000 credits annually.

Source
Visor: How many workspace members and viewers are included in each plan?

Free plan allows 5 workspace members maximum. Starter supports up to 10 workspace members plus free viewer-only members. Team and Business plans include unlimited workspace members and unlimited free viewer-only members for sharing read-only access.

Source
Visor: What is the difference between Visor's per-user and Business flat-rate pricing?

Free, Starter, and Team are priced per user at $0, $18, and $24 per month respectively. Business is a flat rate of $750 per month and covers up to 100 editors with unlimited free viewers, making it cost-effective for large teams.

Source
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