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Developer Tools · head to head

OpsLevel vs Principle

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OpsLevel

Developer Tools

Internal developer portal that scores service ownership and production readiness

From
On request
Free plan
No
Visit OpsLevelFull review
P

Principle

Design

Animate your ideas, design better apps

From
$129/one-time
Free plan
No
Visit PrincipleFull review

The short version

  • Principle starts at $129 one-off; OpsLevel prices on request.
  • Only OpsLevel lists service catalogue; only Principle lists timeline-based animation.
  • Where Principle falls short: macOS only with no Windows or Linux editor available.
  • Prices and features on this page were last checked on 31 August 2026.

Where they differ

Only the attributes on which OpsLevel and Principle actually diverge.

Attributes where OpsLevel and Principle differ
AttributeOpsLevelPrinciple
Starting priceOn request$129/one-time
PlatformsWebmacOS
CategoryDeveloper ToolsDesign

Identical on both: free tier (No).

Not yet recorded: pricing model for Principle, founded for OpsLevel.

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 OpsLevel

  • Service catalogue
  • Scorecards and rubric
  • Checks
  • Campaigns
  • Self-service actions
  • Slack and Teams integration
  • Catalogue auto-enrichment
  • Deployment on request

Only in Principle

  • Timeline-based animation
  • Interactive prototypes
  • Touch gestures
  • Component reuse
  • Video export
  • Sketch import
  • Figma import
  • Driver animations

What people use each for

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

OpsLevel

  • A platform team that needs to prove every production service has a named owner and an on-call rota before an auditnot Principle
  • Driving a fleet-wide migration such as a runtime upgrade across 400 services with a deadline and visible progressnot Principle
  • Giving developers a paved road to create a new service from a template without waiting on the platform teamnot Principle
  • An organisation where an incident took an hour to route because nobody could identify the owning teamnot Principle

Principle

  • Mobile app prototypesnot OpsLevel
  • Micro-interactionsnot OpsLevel
  • Animation designnot OpsLevel
  • User flow designnot OpsLevel
  • Gesture-based interfacesnot OpsLevel

Where each one falls short

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

OpsLevel

  • OpsLevel does not publish prices at all, not even a starting figure, so you cannot size a budget or compare against Backstage's zero licence cost without entering a sales cycle
  • The Standard plan caps at 50 users, which is below the size at which service ownership becomes a real problem, so most genuine buyers land on Enterprise and its unpublished pricing
  • Scores are only as honest as the metadata teams maintain; where ownership records go stale the rubric produces confident numbers about a catalogue that no longer reflects reality, and leadership acts on them
  • It reports on quality rather than producing it, so it can generate friction between platform teams who set the rubric and product teams who see it as a scoreboard imposed on them without extra headcount to fix the findings
  • As a hosted product it needs read access to source control, cloud accounts and observability tooling, which is a meaningful vendor review in regulated environments; on-premises exists but only on the Enterprise tier

Principle

  • macOS only with no Windows or Linux editor available
  • No vector morphing capability for complex shape transformations
  • Limited asset creation tools; cannot create vectors or shapes directly within Principle
  • Sketch import flattens certain properties including paths, fills, borders, masks, blur effects, and text layers
  • Limited variable support, logical loops, and data input capabilities compared to tools like ProtoPie or Origami

Pricing, plan by plan

OpsLevel

On request
  • StandardOn request
    • Up to 50 users
    • Unlimited catalogued components
    • Scorecards, campaigns and the global rubric
  • EnterpriseOn request
    • Unlimited users
    • Custom integrations
    • Customisable dashboards

Principle

$129/one-time
  • License$129 one-off
    • One year of upgrades
    • Full access to all features
  • Upgrade License$99/yr
    • Annual renewal for ongoing upgrades

Which should you pick?

Choose OpsLevel if

  • You need service catalogue.
  • You also want scorecards and rubric.
OpsLevel review

Choose Principle if

  • You need timeline-based animation.
  • You work on macOS.
  • You also want interactive prototypes.
Principle review

Questions people ask

Is OpsLevel or Principle better?
Neither clearly leads. OpsLevel starts at On request and Principle at $129/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OpsLevel or Principle?
OpsLevel starts at On request and Principle at $129/one-time.
Does OpsLevel or Principle run on more platforms?
OpsLevel runs on Web. Principle runs on macOS.
What is OpsLevel best used for?
OpsLevel is most often used for a platform team that needs to prove every production service has a named owner and an on-call rota before an audit, driving a fleet-wide migration such as a runtime upgrade across 400 services with a deadline and visible progress, giving developers a paved road to create a new service from a template without waiting on the platform team, an organisation where an incident took an hour to route because nobody could identify the owning team. Of those, a platform team that needs to prove every production service has a named owner and an on-call rota before an audit and driving a fleet-wide migration such as a runtime upgrade across 400 services with a deadline and visible progress are not what Principle is typically brought in for.
What can OpsLevel do that Principle cannot?
OpsLevel covers Service catalogue, Scorecards and rubric, Checks, Campaigns. Principle covers Timeline-based animation, Interactive prototypes, Touch gestures, Component reuse.

Answered from the vendors’ own pages

OpsLevel: How much does OpsLevel cost?

It does not publish pricing. Billing is per developer using the portal, with volume discounts, and a quote requires a sales conversation.

Principle: Does Principle run on Windows or Linux?

No. Principle is macOS only and runs on Intel and Apple Silicon Macs. There is no Windows or Linux editor available; however, prototypes can be shared and viewed on any platform via web link.

Source
OpsLevel: How does it compare with Backstage?

Backstage has no licence fee but you staff a team to build and run it. OpsLevel is hosted with checks, campaigns and scorecards out of the box, and you pay per developer instead.

Principle: What is the cost of Principle?

Principle costs $129 for a one-time purchase with 1 year of upgrades included. After 1 year, upgrade licenses cost $99/year. A 14-day free trial is available with all features included.

Source
OpsLevel: Does it require writing catalogue YAML by hand?

No. It auto-discovers and enriches entries from connected systems, though teams still curate ownership and metadata.

Principle: Can I import designs from Figma or Sketch into Principle?

Yes. Principle supports importing designs from Figma and Sketch with intelligent merging of re-imported files. Some Sketch properties such as paths, fills, borders, blur effects, masks, and text layers are flattened upon import.

Source
OpsLevel: Can it run on premises?

Yes, but only on the Enterprise plan.

Principle: How do I share Principle prototypes with others?

Prototypes can be shared via web link with one click (File > Export > Share to Web). Recipients can view and interact with prototypes in any browser on any platform: Windows, macOS, Linux, Android, or iOS. No installation required.

Source
Principle: Can I create vector shapes and morphing animations in Principle?

Principle does not support vector morphing, where vector objects transform into other vector shapes. It also has limited asset creation capabilities and editing is restricted to basic operations like scale and rotate.

Source
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