Softwr

Developer Tools · head to head

Keil MDK vs Yoti

Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite
Yoti logo

Yoti

Cybersecurity

Reusable digital identity, facial age estimation and identity verification

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only Keil MDK has a free tier, so it costs nothing to try first.
  • Each has a real cost: Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site; Yoti age estimation returns a probabilistic range rather than a verified date of birth, so it only works with a safety buffer above the legal threshold and cannot prove an exact age.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where Keil MDK and Yoti differ
AttributeKeil MDKYoti
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
PlatformsWebWeb, iOS, Android, API
CategoryDeveloper ToolsCybersecurity

Identical on both: 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 Yoti does not also cover.

Only in Yoti

  • Facial age estimation
  • Reusable digital ID
  • Identity verification
  • UK right to work and rent
  • Digital ID for retail
  • Selective disclosure

What people use each for

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

Keil MDK

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

Yoti

  • A social platform meeting UK Online Safety Act age assurance duties without collecting identity documents from teenagersnot Keil MDK
  • A supermarket removing staff interventions at self-checkout for age-restricted purchasesnot Keil MDK
  • A UK employer running digital right-to-work checks under the certified trust framework rather than inspecting passportsnot Keil MDK
  • A gambling operator needing an age gate with high completion rates before the account funding stepnot 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

Yoti

  • Age estimation returns a probabilistic range rather than a verified date of birth, so it only works with a safety buffer above the legal threshold and cannot prove an exact age.
  • Estimation accuracy varies by demographic and reported error margins widen at the age bands that matter most for eighteen-year thresholds, which pushes borderline users into a document fallback you still have to pay for.
  • Pricing is not published, so buyers cannot compare the cost of an estimation check against a document check without going through sales.
  • Regulatory acceptance of facial estimation differs by jurisdiction, so a method that satisfies Ofcom may not satisfy a regulator elsewhere and multi-market platforms need more than one approach.
  • The reusable digital identity app depends on consumer adoption, which is meaningful in the UK and thin elsewhere, limiting the reusability benefit outside its home market.

Pricing, plan by plan

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Yoti

On request
  • Yoti Age and Identity Services$undefined/year
    • Per-check pricing quoted by volume and method
    • Age estimation, document verification and digital ID priced differently
    • Right to work and right to rent checks quoted separately

Which should you pick?

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Choose Yoti if

  • You need facial age estimation.
  • You work on Web, iOS, Android, API.
  • You also want reusable digital id.
Yoti review

Questions people ask

Is Keil MDK or Yoti better?
Neither clearly leads. Keil MDK starts at Free and Yoti at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keil MDK or Yoti?
Keil MDK has a free tier; the other does not. Paid plans start at Free for Keil MDK and On request for Yoti.
Does Keil MDK or Yoti run on more platforms?
Keil MDK runs on Web. Yoti runs on Web, iOS, Android, API.
Can I use Keil MDK for free?
Yes. Keil MDK has a free tier, so you can try it without paying. Yoti starts at On request.
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 Yoti is typically brought in for.
What can Keil MDK do that Yoti cannot?
Yoti covers Facial age estimation, Reusable digital ID, Identity verification, UK right to work and rent.

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
Yoti: Does age estimation store my face?

The image is used to produce an estimate and then deleted rather than retained, which is the specific property that makes it usable for age assurance on minors.

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
Yoti: Is it accepted for UK Online Safety Act compliance?

Facial age estimation is one of the methods regulators have accepted as highly effective age assurance. Confirm the current position with your own counsel for your content category.

Yoti: Can it prove someone is exactly 21?

No. It gives a range. If you need a precise age you need a document or database check, which Yoti also sells.

Share

Related pages

More on Keil MDK

More on Yoti

Keep looking

Other head to heads