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Cybersecurity · head to head

Clerk vs Milestone XProtect

Clerk logo

Clerk

Cybersecurity

Drop-in user authentication and management for developers

From
Free
Rated
-
Full reviewWebsite
Milestone XProtect logo

Milestone XProtect

Cybersecurity

Open platform video management software with perpetual per-device licences

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Clerk pricing scales with monthly retained users, which can grow expensive quickly for consumer apps with large user bases.; Milestone XProtect care Plus is presented as optional but is not in practice: without it, perpetual licences stop receiving version upgrades and eventually you cannot add a current camera because your frozen version does not support it.
  • They diverge on capability: Clerk covers Prebuilt UI components, Milestone XProtect covers Open device support.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Clerk and Milestone XProtect actually diverge.

Attributes where Clerk and Milestone XProtect differ
AttributeClerkMilestone XProtect
Pricing modelfreemiumOne-time purchase per device licence, plus annual Care Plus
Platformsweb, ios, android, apiWindows, Web, iOS, Android

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

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 Clerk

  • Prebuilt UI components
  • Organization management
  • Multi-factor authentication
  • Social sign-on
  • Billing
  • Enterprise connections

Only in Milestone XProtect

  • Open device support
  • Perpetual device licences
  • Federated architecture
  • Failover recording
  • Evidence export
  • Smart Map
  • Integration platform
  • Video summarisation

What people use each for

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

Clerk

  • Adding sign-in and user profiles to a web or mobile app quicklynot Milestone XProtect
  • B2B SaaS apps needing organizations and role-based accessnot Milestone XProtect
  • Startups wanting prebuilt UI instead of building auth in-housenot Milestone XProtect
  • Apps needing MFA and fraud detection out of the boxnot Milestone XProtect

Milestone XProtect

  • A city or transport operator running tens of thousands of cameras across federated sitesnot Clerk
  • An enterprise with mixed legacy camera brands that refuses to standardise on one manufacturernot Clerk
  • A critical infrastructure site needing failover recording servers and tamper-evident evidence exportnot Clerk
  • An integrator building a bespoke security application on top of an open VMS platformnot Clerk

Where each one falls short

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

Clerk

  • Pricing scales with monthly retained users, which can grow expensive quickly for consumer apps with large user bases.
  • Enterprise SSO connections beyond the first are billed as add-ons, adding cost for larger organizations.
  • The Business tier's extra dashboard seats cost $20/month each, which adds up for larger teams.
  • Enterprise-tier features like the 99.99% uptime SLA require annual contracts rather than flexible monthly billing.

Milestone XProtect

  • Care Plus is presented as optional but is not in practice: without it, perpetual licences stop receiving version upgrades and eventually you cannot add a current camera because your frozen version does not support it.
  • Per-device licensing means multi-sensor and multi-imager cameras consume several licences each, so a headline camera count badly understates the true licence cost of a modern design.
  • It is Windows only for servers and needs a properly designed server and storage architecture, so the software price is a fraction of a project that also needs recording servers, storage and an integrator.
  • Complexity requires trained staff or a certified integrator; organisations that install it without either end up running a large deployment on default settings and never using the features they paid for.
  • Milestone retired Kite from its portfolio in favour of Arcules from January 2025, which stranded buyers who had standardised on Kite and is a reminder that the cloud side of the portfolio has changed direction more than once.

Pricing, plan by plan

Clerk

Free
  • HobbyFree
    • 50,000 MRU limit per app
    • Up to 3 dashboard seats
    • Unlimited applications
  • Pro$25/month
    • 50,000 MRUs included, $0.02/MRU overage
    • Up to 3 dashboard seats
    • 1 Enterprise Connection included
  • Business$300/month
    • 50,000 MRUs included with volume pricing
    • 10 dashboard seats included
    • SOC2 report and priority support
  • Enterprise$undefined/month
    • Custom pricing, annual billing
    • 99.99% uptime SLA
    • HIPAA available, dedicated Slack channel

Milestone XProtect

Free
  • XProtect Essential+Free
    • Free for up to 8 cameras
    • No recording time limit
    • No vendor support included
  • XProtect Express+$109/one-time
    • Perpetual device licence, distributor list price
    • Single site, single server
    • Care Plus purchased separately per device per year
  • XProtect Professional+$177/one-time
    • Perpetual device licence, distributor list price
    • Multiple recording servers
    • Edge storage retrieval
  • XProtect Expert$282/one-time
    • Perpetual device licence, distributor list price
    • Failover recording servers
    • Advanced video wall and evidence handling

Which should you pick?

Choose Clerk if

  • You need prebuilt ui components.
  • You want to start without paying.
  • You work on web, ios, android, api.
  • You also want organization management.
Clerk review

Choose Milestone XProtect if

  • You need open device support.
  • You want to start without paying.
  • You work on Windows, Web, iOS, Android.
  • You also want perpetual device licences.
Milestone XProtect review

Questions people ask

Is Clerk or Milestone XProtect better?
Neither clearly leads. Clerk starts at Free and Milestone XProtect at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Clerk or Milestone XProtect?
Clerk starts at Free and Milestone XProtect at Free.
Does Clerk or Milestone XProtect run on more platforms?
Clerk runs on web, ios, android, api. Milestone XProtect runs on Windows, Web, iOS, Android.
Can I use Clerk for free?
Both have a free tier, so you can try either at no cost before committing.
What is Clerk best used for?
Clerk is most often used for adding sign-in and user profiles to a web or mobile app quickly, b2b saas apps needing organizations and role-based access, startups wanting prebuilt ui instead of building auth in-house, apps needing mfa and fraud detection out of the box. Of those, adding sign-in and user profiles to a web or mobile app quickly and b2b saas apps needing organizations and role-based access are not what Milestone XProtect is typically brought in for.
What can Clerk do that Milestone XProtect cannot?
Clerk covers Prebuilt UI components, Organization management, Multi-factor authentication, Social sign-on. Milestone XProtect covers Open device support, Perpetual device licences, Federated architecture, Failover recording.

Answered from the vendors’ own pages

Clerk: What does Clerk cost?

Clerk's Hobby plan is free with a 50,000 MRU limit; Pro is $25/month ($20/month billed annually), Business is $300/month ($250 annually), and Enterprise uses custom annual pricing.

Source
Milestone XProtect: Is XProtect really free for small sites?

Essential+ is free for up to eight cameras with no recording time limit, but it comes with no vendor support and no multi-server capability.

Clerk: Is there a free plan and what are its limits?

Yes, the Hobby plan is free with a 50,000 monthly retained user (MRU) limit per app, up to 3 dashboard seats, and unlimited applications, with no credit card required.

Source
Milestone XProtect: Are licences perpetual or annual?

Device licences are perpetual. The annual cost is Care Plus, the support and software update contract, which you need to stay on current versions.

Clerk: How is usage metered?

Clerk meters by monthly retained users (MRUs) — users who return to the app at least a day after signing up — with overage billed at $0.02 per MRU beyond the included 50,000 on paid plans.

Source
Milestone XProtect: What happens if I do not renew Care Plus?

The system keeps recording, but you stop getting version upgrades, and over a few years that blocks you from adding newer cameras.

Milestone XProtect: Who owns Milestone?

Canon. The portfolio also includes BriefCam analytics and Arcules cloud video, with Arcules replacing Milestone Kite from January 2025.

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