Is Arnica or Moonrepo better?

Neither clearly leads. Arnica starts at Free and Moonrepo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Arnica or Moonrepo?

Arnica starts at Free and Moonrepo at Free.

Does Arnica or Moonrepo run on more platforms?

Arnica runs on Web, GitHub, IDE. Moonrepo runs on Web, CLI.

Can I use Arnica for free?

Both have a free tier, so you can try either at no cost before committing.

What is Arnica best used for?

Arnica is most often used for detecting ai-generated vulnerabilities in copilot and cursor suggestions, finding hardcoded secrets before they reach production, mapping container vulnerabilities back to source code, generating sbom for supply chain compliance requirements. Of those, detecting ai-generated vulnerabilities in copilot and cursor suggestions and finding hardcoded secrets before they reach production are not what Moonrepo is typically brought in for.

What can Arnica do that Moonrepo cannot?

Arnica covers AI SAST, Software Composition Analysis, Secrets detection, IaC scanning. Moonrepo covers Task orchestration, Smart hashing, Dependency analysis, Multi-language version management.

Cybersecurity · head to head

Arnica vs Moonrepo

Arnica

Cybersecurity

AI-native application security platform detecting and fixing vulnerabilities across the SDLC

From: Free
Free plan: Yes

Full review Website

Moonrepo

Developer Tools

Monorepo build system and version manager platform

From: Free
Free plan: Yes

Full review Website

The short version

Each has a real cost: Arnica per-identity pricing ($25-$50/person/year) requires tracking active developers; Moonrepo smaller community compared to established build systems like Bazel
They diverge on capability: Arnica covers AI SAST, Moonrepo covers Task orchestration.
Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Arnica and Moonrepo actually diverge.

Attributes where Arnica and Moonrepo differ
Attribute	Arnica	Moonrepo
Pricing model	Per-identity subscription with annual discount	open-source
Platforms	Web, GitHub, IDE	Web, CLI
Category	Cybersecurity	Developer Tools

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 Arnica

AI SAST
Software Composition Analysis
Secrets detection
IaC scanning
Container scanning
SBOM generation
Agentic rules
Pipelineless integration

Only in Moonrepo

Task orchestration
Smart hashing
Dependency analysis
Multi-language version management
Contextual detection
Integrated development environment
Git integration

What people use each for

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

Arnica

Detecting AI-generated vulnerabilities in Copilot and Cursor suggestionsnot Moonrepo
Finding hardcoded secrets before they reach productionnot Moonrepo
Mapping container vulnerabilities back to source codenot Moonrepo
Generating SBOM for supply chain compliance requirementsnot Moonrepo
Scanning infrastructure-as-code for misconfiguration risksnot Moonrepo

Moonrepo

Managing multiple language projects in a single repositorynot Arnica
Automating developer environment setup with consistent toolchain versionsnot Arnica
Optimizing monorepo builds with intelligent task cachingnot Arnica
Enforcing consistent development practices across distributed teamsnot Arnica

Where each one falls short

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

Arnica

Per-identity pricing ($25-$50/person/year) requires tracking active developers
Overage identity tracking via 90-day PR activity can be unpredictable
Free plan limited to weekly updates, requiring upgrade for real-time scanning
Advanced add-ons (Image Scanning, AI SAST, Agentic Rules Enforcer) pricing not published
On-premises deployment limited to Enterprise tier

Moonrepo

Smaller community compared to established build systems like Bazel
Limited integrations with enterprise CI/CD platforms
Documentation gaps in some advanced use cases
No commercial support option for organizations requiring guaranteed SLAs

Pricing, plan by plan

Arnica

Free

FreeFree
- No credit card required
- 14-day trial available
- Weekly risk identification updates
Core Business$360/year
- Monthly billing option at $30/identity/month
- Annual billing at $25/identity/month (17% discount)
- Real-time risk scanning and notifications
Core Enterprise$720/year
- Monthly billing option at $60/identity/month
- Annual billing at $50/identity/month (17% discount)
- All Core Business features

Moonrepo

Free

No published plan breakdown. See the Moonrepo review.

Which should you pick?

Choose Arnica if

You need ai sast.
You want to start without paying.
You work on Web, GitHub, IDE.
You also want software composition analysis.

Arnica review

Choose Moonrepo if

You need task orchestration.
You want to start without paying.
You work on Web, CLI.
You also want smart hashing.

Moonrepo review

Questions people ask

Is Arnica or Moonrepo better?: Neither clearly leads. Arnica starts at Free and Moonrepo at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arnica or Moonrepo?: Arnica starts at Free and Moonrepo at Free.
Does Arnica or Moonrepo run on more platforms?: Arnica runs on Web, GitHub, IDE. Moonrepo runs on Web, CLI.
Can I use Arnica for free?: Both have a free tier, so you can try either at no cost before committing.
What is Arnica best used for?: Arnica is most often used for detecting ai-generated vulnerabilities in copilot and cursor suggestions, finding hardcoded secrets before they reach production, mapping container vulnerabilities back to source code, generating sbom for supply chain compliance requirements. Of those, detecting ai-generated vulnerabilities in copilot and cursor suggestions and finding hardcoded secrets before they reach production are not what Moonrepo is typically brought in for.
What can Arnica do that Moonrepo cannot?: Arnica covers AI SAST, Software Composition Analysis, Secrets detection, IaC scanning. Moonrepo covers Task orchestration, Smart hashing, Dependency analysis, Multi-language version management.

Answered from the vendors’ own pages

Arnica: How are identities defined in Arnica pricing?

Identities are any users and other contributing entities that contributed code and/or had PR activity during the last 90 days. This ensures billing matches active developers.

Source

Moonrepo: What programming languages does Moonrepo support?

Moonrepo's proto version manager supports Node.js, Python, Go, Rust, Deno, Java, Ruby, and other languages, with the build system moon supporting most modern development stacks.

Source

Arnica: What is the annual discount?

Annual prepayment offers approximately 17% savings versus monthly billing. Core Business annual is $300/identity versus $360 for monthly.

Source

Moonrepo: Is Moonrepo suitable for large monorepos?

Yes, Moonrepo is designed to scale to monorepos of any size with intelligent caching and task orchestration to maintain build performance.

Source

Arnica: Can I cancel or downgrade Arnica anytime?

Yes. Subscriptions can be cancelled or downgraded at any time. Overage identities receive automatic protection with true-up invoicing.

Source

Moonrepo: Can I use just moon or just proto separately?

Yes, moon and proto are independent tools that can be adopted separately or together to address specific team needs.

Source

Arnica vs Moonrepo

Arnica

Moonrepo

The short version

Where they differ

What each one covers

Only in Arnica

Only in Moonrepo

What people use each for

Arnica

Moonrepo

Where each one falls short

Arnica

Moonrepo

Pricing, plan by plan

Arnica

Moonrepo

Which should you pick?

Choose Arnica if

Choose Moonrepo if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Arnica

More on Moonrepo

Keep looking

Other head to heads