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Cloud · head to head

Fly.io vs SonarQube

Fly.io logo

Fly.io

Cloud

Deploy web applications globally

From
$29/month
Free plan
No
Full reviewWebsite
SonarQube logo

SonarQube

Developer Tools

Code quality and code security for clean code, at every step

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only SonarQube has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fly.io egress is priced by destination region, from $0.02 per GB in North America and Europe to $0.12 per GB for Africa and India, so the same traffic costs six times more depending on where users are; SonarQube advanced Security add-on uses custom pricing
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Fly.io and SonarQube actually diverge.

Attributes where Fly.io and SonarQube differ
AttributeFly.ioSonarQube
Starting price$29/monthFree
Pricing modelusage-basedsubscription
Free tierNoYes
PlatformsWeb, Api, DockerWeb
CategoryCloudDeveloper Tools
Founded2020Unknown

Identical on both: 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 Fly.io

  • Global deployment
  • Docker support
  • Postgres databases
  • Redis support
  • Auto-scaling
  • Health checks
  • Backups
  • Monitoring

Only in SonarQube

Nothing recorded that Fly.io does not also cover.

What people use each for

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

Fly.io

  • Deploying containerised applications close to users across regionsnot SonarQube
  • Running full stack apps and databases on managed machinesnot SonarQube

SonarQube

  • Code quality analysisnot Fly.io
  • Vulnerability detectionnot Fly.io
  • Security scanningnot Fly.io
  • Compliance reportingnot Fly.io

Where each one falls short

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

Fly.io

  • Egress is priced by destination region, from $0.02 per GB in North America and Europe to $0.12 per GB for Africa and India, so the same traffic costs six times more depending on where users are
  • Stopped machines still bill at $0.15 per GB of root filesystem a month, so a paused service is not a free one
  • Volumes are billed on provisioned capacity rather than usage, at $0.15 per GB a month
  • Reservation discounts of 40% require paying a year up front, from $36 to $1,440
  • Fly Kubernetes is a separate $75 a month per cluster
  • Dedicated IPv4 addresses are $2 a month each

SonarQube

  • Advanced Security add-on uses custom pricing
  • Only private project lines of code count toward limits

Pricing, plan by plan

Fly.io

$29/month
  • Pay-as-You-Go$null/mo
    • Micro VMs and persistent storage charged by usage
    • FlyCTL CLI
    • Unlimited users and organizations
  • Serious Support$29/month
    • Access to dedicated engineering team
    • All Pay-as-You-Go features
  • Machine Reservation Blocks$null/mo
    • 40% discount on machine usage
    • Requires upfront payment for savings
  • Compliance Package$99/month
    • HIPAA compliance
    • BAAs
    • SOC2 documentation

SonarQube

Free
  • FreeFree
    • Supports up to 50000 lines of code in private projects
    • Never expires
    • Covers public projects
  • Team$34/month
    • 30+ languages
    • Code quality standards
    • Bug and vulnerability detection
  • Enterprise$null/custom
    • Advanced security reports
    • OWASP/CWE/PCI DSS compliance
    • Unlimited users and projects

Which should you pick?

Choose Fly.io if

  • You need global deployment.
  • You work on Web, Api, Docker.
  • You also want docker support.
Fly.io review

Choose SonarQube if

  • You want to start without paying.
SonarQube review

Questions people ask

Is Fly.io or SonarQube better?
Neither clearly leads. Fly.io starts at $29/month and SonarQube at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fly.io or SonarQube?
SonarQube has a free tier; the other does not. Paid plans start at $29/month for Fly.io and Free for SonarQube.
Does Fly.io or SonarQube run on more platforms?
Fly.io runs on Web, Api, Docker. SonarQube runs on Web.
Can I use SonarQube for free?
Yes. SonarQube has a free tier, so you can try it without paying. Fly.io starts at $29/month.
What is Fly.io best used for?
Fly.io is most often used for deploying containerised applications close to users across regions, running full stack apps and databases on managed machines. Of those, deploying containerised applications close to users across regions and running full stack apps and databases on managed machines are not what SonarQube is typically brought in for.
What can Fly.io do that SonarQube cannot?
Fly.io covers Global deployment, Docker support, Postgres databases, Redis support.

Answered from the vendors’ own pages

Fly.io: Is there a free tier for Fly.io?

Fly.io does not advertise a free tier. The base plan is pay-as-you-go with usage-based pricing for Micro VMs and persistent storage. All users get FlyCTL CLI, unlimited organizations, private networking, SSO, ACLs, and scoped tokens.

Source
SonarQube: How much does SonarQube cost?

SonarQube offers a free tier supporting up to 50000 lines of code in private projects, a Team plan starting at $34/month, and custom Enterprise pricing. Team plan includes 14-day free trial.

Source
Fly.io: How much does Fly.io Serious Support cost?

Serious Support costs 29 USD per month and provides access to a dedicated engineering team while maintaining all pay-as-you-go features for Micro VMs and storage.

Source
SonarQube: Is SonarQube free?

Yes, SonarQube offers a free tier that never expires and covers both public and private projects up to 50000 lines of code in private projects.

Source
Fly.io: What does Fly.io Compliance Package include?

The Compliance Package is 99 USD per month and includes HIPAA compliance, BAAs, and SOC2 documentation for organizations requiring compliance certifications.

Source
SonarQube: What languages does SonarQube support?

SonarQube Team plan supports 30+ languages including common programming languages. Enterprise plan adds support for 40+ languages including ABAP, COBOL, and Apex.

Source
Fly.io: Does Fly.io offer discounts for upfront commitment?

Yes, Fly.io offers Machine Reservation Blocks with 40% discount on machine usage. This requires upfront payment but applies savings on infrastructure costs.

Source
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