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Cybersecurity · head to head

Arnica vs Pieces for Developers

Arnica logo

Arnica

Cybersecurity

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

From
Free
Free plan
Yes
Full reviewWebsite
Pieces for Developers logo

Pieces for Developers

Developer Tools

AI-powered memory layer that captures and organizes developer work

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Arnica per-identity pricing ($25-$50/person/year) requires tracking active developers; Pieces for Developers requires installing and running a background desktop app rather than being purely cloud-based.
  • They diverge on capability: Arnica covers AI SAST, Pieces for Developers covers Activity Timeline.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Arnica and Pieces for Developers actually diverge.

Attributes where Arnica and Pieces for Developers differ
AttributeArnicaPieces for Developers
Pricing modelPer-identity subscription with annual discountfreemium
PlatformsWeb, GitHub, IDEwindows, mac, linux
CategoryCybersecurityDeveloper Tools
FoundedUnknown2018

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 Pieces for Developers

  • Activity Timeline
  • Conversational Search
  • Artifact Generation
  • Cross-tool Integration
  • MCP Server
  • On-device Storage

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 Pieces for Developers
  • Finding hardcoded secrets before they reach productionnot Pieces for Developers
  • Mapping container vulnerabilities back to source codenot Pieces for Developers
  • Generating SBOM for supply chain compliance requirementsnot Pieces for Developers
  • Scanning infrastructure-as-code for misconfiguration risksnot Pieces for Developers

Pieces for Developers

  • Recalling code snippets and context from earlier work sessionsnot Arnica
  • Generating standup updates automatically from captured activitynot Arnica
  • Feeding long-term memory into AI coding assistants via MCPnot Arnica
  • Searching past research and meeting notes conversationallynot 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

Pieces for Developers

  • Requires installing and running a background desktop app rather than being purely cloud-based.
  • Free tier trial of Pro features requires a credit card and reverts after 7 days.
  • Local-first storage means memory is not automatically synced across multiple machines without Enterprise controls.
  • Effectiveness depends on the breadth of integrations enabled, which adds setup overhead.

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

Pieces for Developers

Free
  • FreeFree
    • Basic capture and search
    • 7-day trial of Pro features
  • Pro$18.99/month
    • Long-term on-device memory
    • Cross-app capture
    • Single-click summaries and recaps
  • Enterprise$22.99/month
    • All Pro features
    • Organization-wide capture and feature controls
    • Approved AI providers and custom API keys

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 Pieces for Developers if

  • You need activity timeline.
  • You want to start without paying.
  • You work on windows, mac, linux.
  • You also want conversational search.
Pieces for Developers review

Questions people ask

Is Arnica or Pieces for Developers better?
Neither clearly leads. Arnica starts at Free and Pieces for Developers at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arnica or Pieces for Developers?
Arnica starts at Free and Pieces for Developers at Free.
Does Arnica or Pieces for Developers run on more platforms?
Arnica runs on Web, GitHub, IDE. Pieces for Developers runs on windows, mac, linux.
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 Pieces for Developers is typically brought in for.
What can Arnica do that Pieces for Developers cannot?
Arnica covers AI SAST, Software Composition Analysis, Secrets detection, IaC scanning. Pieces for Developers covers Activity Timeline, Conversational Search, Artifact Generation, Cross-tool Integration.

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
Pieces for Developers: Does Pieces store my data in the cloud?

Pieces stores captured data on-device by default, giving users granular controls to pause, disable or delete captures rather than relying solely on cloud storage.

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
Pieces for Developers: Is there a free plan for Pieces?

Pieces does not offer a permanently free plan; new users instead get a 7-day free trial on any plan, which requires a credit card to start.

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
Pieces for Developers: What does the Pro plan cost?

Pro is $18.99 per month billed monthly, with roughly a 25% discount available when billed yearly.

Source
Pieces for Developers: What does the Enterprise plan add?

Enterprise costs $22.99 per month (or $69.99 per quarter) and adds organization-wide admin controls, approved AI providers, and governance over captured data.

Source
Pieces for Developers: Can I cancel my Pieces subscription?

Yes, users can upgrade, downgrade, or cancel anytime from account settings, and all plans include a 14-day money-back guarantee.

Source
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