Review · Developer tools
Fly.io review
A platform that runs apps as fast-booting Fly Machines in 18 regions, billed by the second, with Managed Postgres and Sprites sandboxes.
By the TopToolAdvisor research desk · Updated November 9, 2026
- Features (35%)
- 8.8
- Ease of use (35%)
- 7.8
- Value (30%)
- 8.8
Fly.io ranks sixth and has the lowest entry price for a running machine: a shared-cpu-1x Machine with 256 MB costs $0.0030 an hour, or $2.19 a month, billed by the second while it runs. Apps run as Fly Machines, fast-booting VMs available in 18 regions, which makes Fly a natural fit for apps that should sit close to users on several continents. The platform adds autoscaling, zero-downtime deploys, monitoring, Managed Postgres from $38 a month and Fly Sprites, isolated sandboxes that scale to zero when idle. Fly waives invoices under $5, so very small apps can cost nothing in practice, though there is no permanent free plan, only $1 free to start. Storage and egress are priced separately, and support is a separate subscription starting at $29 a month. Fly scores lower on ease of use because working with Machines and regions involves more configuration than the Git-push flows of Vercel, Render or Railway.
Who it is for
Developers who want containers running close to users in many regions at low per-machine prices.
Price
Pay as you go; smallest shared-cpu-1x Machine with 256 MB from $2.19 per month.
shared-cpu-1x · 256MB $0.0030 $2.19
Quoted from the vendor pricing page on November 9, 2026.
Key features
- Fly Machines, fast-booting VMs for production apps in 18 regions
- Compute billed by the second while a Machine runs
- Managed Postgres plans from Basic at $38 a month
- Fly Sprites, hardware-isolated sandboxes that scale to zero when idle
- Autoscaling, zero-downtime deploys, monitoring and an MCP server
Strengths and weaknesses
- Strength: Lowest entry price per running machine in this list
- Strength: Many regions for running apps near users
- Strength: Invoices under $5 are waived
- Weakness: No permanent free plan, only $1 free to start
- Weakness: Command line and VM concepts take more setup than Git-push platforms
- Weakness: Storage and egress are priced separately
Key facts
- Free plan: No, $1 free to start with no credit card
- Smallest Machine: shared-cpu-1x with 256 MB, $2.19 per month
- Regions: 18
- Paid support: Standard $29, Premium $199 per month
Where it ranks
Fly.io is No. 6 in our Best App Hosting Platforms verdict.
Alternatives we scored
- Vercel9.0
- Render8.9
- Railway8.8
- Cloudflare Workers8.7
Visit fly.io · Questions or corrections: editorial@toptooladvisor.com