FlexStack
vs
Fly.io
What's good about each
- Infrastructure stays in your AWS account after cancelling
- Unlimited environments and services on every plan, including free
- Spot pricing for container services
- One-click apps such as Pocketbase, Directus and Umami
- Excellent tooling and developer experience
- Fast deployments, scale to zero, little config needed
- Per-second billing, with a 40% discount for reserved compute blocks
- Anycast networking and global load balancing included at no extra cost
Price comparison
Closest matching configuration on each side, monthly list price in USD.
| Service | FlexStack | Fly.io | Difference |
|---|---|---|---|
| Small VM | -- Not listed | $5.70 /mo 1 vCPU, 1 GB RAM (shared-cpu-1x) | |
| Medium VM | -- Not listed | $42.79 /mo 4 vCPU, 8 GB RAM (shared-cpu-4x) | |
| Large VM | -- Not listed | $248.00 /mo 8 vCPU, 16 GB RAM (performance-8x) | |
| Block storage | -- Not listed | $15.00 /mo 100 GB | |
| Object storage | -- Not listed | $20.50 /mo 1 TB (Tigris) | |
| PostgreSQL | -- Not listed | $86.00 /mo 2 vCPU, 2 GB RAM, 50 GB storage (Starter) | |
| Redis | -- Not listed | $20.00 /mo 1 GB data (Upstash Fixed 1GB) | |
| Load balancer | -- Not listed | Included with apps | |
| Egress | -- Not listed | $20.00 /TB $0.02 / GB (North America and Europe) |
Heads up: Figures take each provider's closest plan to a common setup, and vary by region and usage. Hover a service for the reference configuration. Verify before provisioning. More on how we price.
Services
Managed services each provider offers.
Compliance
Frameworks each provider states on its own site, each linked to its source.
Heads up: Each entry links to the provider's own statement. An attestation can cover one tier, one region or the platform alone rather than every service. Verify the scope before you rely on it. A dash means we found nothing to link to, not that the provider lacks it.
Company details
| Fact | FlexStack | Fly.io |
|---|---|---|
| Founded | 2024 | 2017 |
| Headquarters | USA | USA |
| Locations | -- | 18 |
| Example customers | -- | Cars.com, Fanatics, Tailscale, Supabase |
| Website | flexstack.com | fly.io |
Alternatives to consider
Compare FlexStack and Fly.io against other cloud providers.
Our data for FlexStack was last updated on Sept. 18, 2026, and for Fly.io on Sept. 18, 2026.