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Developer Tools · head to head

CLion vs Fly.io

CLion logo

CLion

Developer Tools

A cross-platform IDE for C and C++

From
Free
Free plan
Yes
Full reviewWebsite
Fly.io logo

Fly.io

Cloud

Deploy web applications globally

From
$29/month
Free plan
No
Full reviewWebsite

The short version

  • Only CLion has a free tier, so it costs nothing to try first.
  • Each has a real cost: CLion specific subscription pricing not listed on product page; 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
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where CLion and Fly.io differ
AttributeCLionFly.io
Starting priceFree$29/month
Pricing modelfreemiumusage-based
Free tierYesNo
PlatformsWebWeb, Api, Docker
CategoryDeveloper ToolsCloud
FoundedUnknown2020

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 CLion

Nothing recorded that Fly.io does not also cover.

Only in Fly.io

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

What people use each for

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

CLion

  • C and C++ development with real-time analysisnot Fly.io
  • Embedded systems and ARM toolchain developmentnot Fly.io
  • Remote development via Docker and WSLnot Fly.io
  • Educational programming instructionnot Fly.io
  • Cross-platform development for Linux and Windowsnot Fly.io

Fly.io

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

Where each one falls short

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

CLion

  • Specific subscription pricing not listed on product page
  • Requires reference to separate store page for tier details
  • AI credits needed for integrated AI features
  • No mention of free trial for commercial 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

Pricing, plan by plan

CLion

Free
  • Free (Non-commercial)Free
    • Non-commercial use license
    • Full IDE features for hobby and open-source projects
  • Free (Educational)Free
    • Student licenses
    • Teacher licenses
    • Full IDE access for educational purposes
  • Subscription$null/month
    • Different subscription options for individuals and organizations
    • 25% discount for switching from competing products

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

Which should you pick?

Choose CLion if

  • You want to start without paying.
CLion review

Choose Fly.io if

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

Questions people ask

Is CLion or Fly.io better?
Neither clearly leads. CLion starts at Free and Fly.io at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CLion or Fly.io?
CLion has a free tier; the other does not. Paid plans start at Free for CLion and $29/month for Fly.io.
Does CLion or Fly.io run on more platforms?
CLion runs on Web. Fly.io runs on Web, Api, Docker.
Can I use CLion for free?
Yes. CLion has a free tier, so you can try it without paying. Fly.io starts at $29/month.
What is CLion best used for?
CLion is most often used for c and c++ development with real-time analysis, embedded systems and arm toolchain development, remote development via docker and wsl, educational programming instruction. Of those, c and c++ development with real-time analysis and embedded systems and arm toolchain development are not what Fly.io is typically brought in for.
What can CLion do that Fly.io cannot?
Fly.io covers Global deployment, Docker support, Postgres databases, Redis support.

Answered from the vendors’ own pages

CLion: Is CLion free?

CLion offers free licenses for students, teachers, and non-commercial use. Commercial users can purchase subscriptions with organization pricing available.

Source
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
CLion: What free options does CLion provide?

CLion provides non-commercial use licenses for open-source and hobby projects, plus full licenses for students and teachers without cost.

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
CLion: Does CLion include AI assistance?

Yes, CLion natively integrates AI with support for Claude, GPT, Gemini, and Grok models. Users can apply JetBrains AI credits or bring their own API keys to avoid vendor lock-in.

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
CLion: Are there discounts for switching to CLion?

CLion offers a competitive discount of 25% for users switching from other IDEs and similar products.

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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