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Government · head to head

Citizen vs Sigstore

Citizen logo

Citizen

Government

Real-time Safety Alerts

From
Free
Free plan
Yes
Full reviewWebsite
Sigstore logo

Sigstore

Cybersecurity

Free public signing and transparency infrastructure for open source artifacts

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Citizen no premium or paid features mentioned; Sigstore the security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • They diverge on capability: Citizen covers Real-time Alerts, Sigstore covers Fulcio.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Citizen and Sigstore actually diverge.

Attributes where Citizen and Sigstore differ
AttributeCitizenSigstore
Pricing modelfreemiumOpen source, public instance free to use
PlatformsIos, AndroidWeb, Linux, macOS, Windows, Self-hosted
CategoryGovernmentCybersecurity
Founded2016Unknown

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 Citizen

  • Real-time Alerts
  • 911 Monitoring
  • Live Video
  • Safety Map
  • Personal Safety
  • Emergency Services
  • Social Media
  • Location Services

Only in Sigstore

  • Fulcio
  • Rekor
  • Keyless signing
  • Multi-language clients
  • Timestamp authority
  • Neutral governance

What people use each for

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

Citizen

  • Citizen Servicesnot Sigstore
  • Records Managementnot Sigstore
  • Public Safetynot Sigstore
  • Civic Engagementnot Sigstore

Sigstore

  • Open source projects signing releases without running a certificate authoritynot Citizen
  • Organisations meeting a signed-artifact requirement without buying a signing productnot Citizen
  • Publishing provenance that a consumer can verify independently of younot Citizen
  • Self-hosting the same components where a public log is unacceptablenot Citizen

Where each one falls short

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

Citizen

  • No premium or paid features mentioned
  • App is completely free with no monetization model disclosed
  • No in-app purchases or premium tier mentioned
  • Subscription or paid features may exist but not disclosed

Sigstore

  • The security model depends on somebody watching the log. The documentation states that compromise of an identity provider or of Fulcio itself is detectable only if third parties monitor the transparency log, the monitoring tool is a community-tier rather than core project, and almost no consumer runs one.
  • It is a 99.5 percent objective with no service level agreement, which permits several hours of downtime a month and offers no remedy. A pipeline that signs on every build has taken a hard dependency on a free service with no contract behind it.
  • Log scale is a live engineering problem rather than a theoretical one. The active shard holds billions of entries, the log has already been sharded twice, and sharding version 1 requires stopping traffic, which is why a replacement was built.
  • Ten-minute certificates make trust depend on log availability. Verifying an older signature relies on the log entry proving it was made inside that window, so a lost or unreachable entry can render a valid artifact unverifiable.
  • Migration debt is substantial and ongoing. Version 2 of the log is generally available but not the public default, the signing client has an announced breaking release ahead, some official clients lag the new log format, and a post-quantum migration is named as the next break after that.

Pricing, plan by plan

Citizen

Free
  • BasicFree
    • Real-time Alerts
    • Incident Feed
    • Safety Map

Sigstore

Free
  • Public good instanceFree
    • Free to everyone with no contract
    • 99.5 percent availability objective, not an agreement
    • 100KB cap per attestation upload
  • Self-hostedFree
    • Apache-2.0
    • Run your own Fulcio and Rekor
    • Rekor v2 available for self-hosters

Which should you pick?

Choose Citizen if

  • You need real-time alerts.
  • You want to start without paying.
  • You work on Ios, Android.
  • You also want 911 monitoring.
Citizen review

Choose Sigstore if

  • You need fulcio.
  • You want to start without paying.
  • You work on Web, Linux, macOS, Windows, Self-hosted.
  • You also want rekor.
Sigstore review

Questions people ask

Is Citizen or Sigstore better?
Neither clearly leads. Citizen starts at Free and Sigstore at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Citizen or Sigstore?
Citizen starts at Free and Sigstore at Free.
Does Citizen or Sigstore run on more platforms?
Citizen runs on Ios, Android. Sigstore runs on Web, Linux, macOS, Windows, Self-hosted.
Can I use Citizen for free?
Both have a free tier, so you can try either at no cost before committing.
What is Citizen best used for?
Citizen is most often used for citizen services, records management, public safety, civic engagement. Of those, citizen services and records management are not what Sigstore is typically brought in for.
What can Citizen do that Sigstore cannot?
Citizen covers Real-time Alerts, 911 Monitoring, Live Video, Safety Map. Sigstore covers Fulcio, Rekor, Keyless signing, Multi-language clients.

Answered from the vendors’ own pages

Citizen: How much does Citizen cost?

Citizen is available as a free app download for iOS and Android. The app includes core safety and alert features at no cost.

Source
Sigstore: Is the public instance really free?

Yes, with no contract and no paid tier. That is also the weakness: a 99.5 percent objective with no agreement, no remedy and support through Slack.

Citizen: Are there paid features or premium subscriptions in Citizen?

Citizen's website does not mention paid features, premium subscriptions, or in-app purchases. All advertised features appear to be included in the free app.

Source
Sigstore: Has the public log moved to Rekor v2?

No. Version 2 reached general availability in October 2025 and self-hosters can use it, but the public instance still defaults to version 1 and the project has said it will for the foreseeable future.

Sigstore: Does Sigstore make my dependencies safe?

No, and this is a category error worth avoiding. It tells you who published something. It has no knowledge of what the artifact contains or whether it is vulnerable.

Sigstore: What are the rate limits?

Not published. Only the 100KB cap per attestation upload is documented, so do not design a high-volume pipeline around assumed throughput.

Sigstore: Should we self-host it?

If a public record of every signature is unacceptable, or if a free service with no agreement cannot sit in your build path, then yes. Otherwise the public instance is what most projects use.

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