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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

Visit fly.io · Questions or corrections: editorial@toptooladvisor.com