Softwr

Cloud · head to head

Fly.io vs Rancher

Fly.io logo

Fly.io

Cloud

Deploy web applications globally

From
$29/month
Rated
-
Full reviewWebsite
Rancher logo

Rancher

Cloud

Kubernetes management platform for multiple clusters

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Rancher 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; Rancher another platform to run and keep available, and an outage in it affects access to everything it manages
  • They diverge on capability: Fly.io covers Global deployment, Rancher covers Multi-cluster management.

Where they differ

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

Attributes where Fly.io and Rancher differ
AttributeFly.ioRancher
Starting price$29/monthFree
Pricing modelusage-basedOpen source, no licence fee
Free tierNoYes
PlatformsWeb, Api, DockerKubernetes, Linux, Docker, Self-hosted
Founded2020Unknown

Identical on both: user rating (Not yet rated), category (Cloud).

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 Rancher

  • Multi-cluster management
  • Centralised RBAC
  • Cluster provisioning
  • App catalogue

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 Rancher
  • Running full stack apps and databases on managed machinesnot Rancher

Rancher

  • Operating many Kubernetes clusters with consistent access controlnot Fly.io
  • Managing clusters across more than one cloud provider from one interfacenot Fly.io
  • Edge deployments with many small clusters, typically alongside K3snot 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

Rancher

  • Another platform to run and keep available, and an outage in it affects access to everything it manages
  • Meaningful overhead if you only operate one or two clusters
  • Version compatibility between Rancher and managed Kubernetes versions needs watching during upgrades
  • Support requires a SUSE subscription; the project itself is community-supported

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

Rancher

Free
  • RancherFree
    • Full functionality
    • No data limits
    • Community support

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 Rancher if

  • You need multi-cluster management.
  • You want to start without paying.
  • You work on Kubernetes, Linux, Docker, Self-hosted.
  • You also want centralised rbac.
Rancher review

Questions people ask

Is Fly.io or Rancher better?
Neither clearly leads. Fly.io starts at $29/month and Rancher at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fly.io or Rancher?
Rancher has a free tier; the other does not. Paid plans start at $29/month for Fly.io and Free for Rancher.
Does Fly.io or Rancher run on more platforms?
Fly.io runs on Web, Api, Docker. Rancher runs on Kubernetes, Linux, Docker, Self-hosted.
Can I use Rancher for free?
Yes. Rancher 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 Rancher is typically brought in for.
What can Fly.io do that Rancher cannot?
Fly.io covers Global deployment, Docker support, Postgres databases, Redis support. Rancher covers Multi-cluster management, Centralised RBAC, Cluster provisioning, App catalogue.

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
Rancher: Is Rancher free?

Yes, open source with no licence fee. SUSE sells support subscriptions.

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
Rancher: Does Rancher work with EKS and GKE?

Yes. It imports and manages existing clusters regardless of who provisioned them, alongside clusters it creates itself.

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
Rancher: Do I need Rancher for one cluster?

Generally no. Its value appears when cluster count and consistent access control become the problem, which is not the case with one.

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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