Heroku vs Fly.io
A detailed comparison to help you choose the right tool for your needs.
AAbout Heroku
Heroku is a cloud platform-as-a-service (PaaS) that enables developers to build, deploy, and scale applications without managing underlying infrastructure. It supports languages like Ruby, Python, Node.js, Java, PHP, Go, and more, letting developers focus on code rather than server configuration. Originally known for its pioneering Git-based deployment workflow, Heroku is owned by Salesforce and offers a rich ecosystem of add-ons for databases, monitoring, caching, and other services. It's particularly popular among startups, indie developers, and teams that want to move fast without a dedicated DevOps team, though costs can escalate quickly at scale.
BAbout Fly.io
Fly.io is a platform-as-a-service that runs applications in lightweight micro-VMs (using Firecracker) close to end users across a global edge network. It allows developers to deploy full-stack applications, databases, and services to dozens of regions worldwide with minimal configuration using a CLI-driven workflow. The platform is particularly well-suited for developers who want the control of infrastructure without the overhead of managing Kubernetes or traditional cloud VMs. It supports Docker containers and various runtimes, making it flexible for different tech stacks. Fly.io differentiates itself by combining the simplicity of a PaaS with the power of deploying actual virtual machines at the edge.
Pricing Comparison
Feature Comparison
Choose Heroku
Heroku is a cloud platform that enables developers to build, run, and operate applications entirely in the cloud.
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Score Comparison
Our Verdict
Your team prioritizes seamless cloud integration for diverse application types.
You're a developer looking to deploy apps globally with ease on a cost-effective platform.
Heroku vs Fly.io: The Bottom Line
Both Heroku and Fly.io are strong developer tools tools, but they serve different needs. Both have similar user ratings (3.9). On pricing, Fly.io is more affordable starting at $0/mo.
Still unsure? Check the full reviews for Heroku and Fly.io, explore Heroku alternatives, or use our AI search to describe exactly what you need.
Frequently Asked Questions
Is Heroku or Fly.io better?
It depends on your needs. Heroku (3.9★) is from $7/mo, while Fly.io (3.9★) is free to start. Fly.io has a higher user rating.
Can I switch from Heroku to Fly.io?
Yes. Most SaaS tools offer data export features. Check if Fly.io has a migration guide or import tool specifically for Heroku users. Many offer onboarding assistance for switchers.
Which is cheaper, Heroku or Fly.io?
Fly.io starts at $0/mo, which is cheaper than Heroku at $7/mo. Fly.io also offers a free plan.
What are the main differences between Heroku and Fly.io?
Heroku focuses on supports multiple programming languages and automated deployment from github, while Fly.io emphasizes global application deployment and automatic scaling based on traffic. Both are in the Developer Tools category but serve slightly different use cases.