FlexStack
vs
Fly.io
What's good about each
- One-click deploy to AWS without complicated infrastructure or templates
- Easy-to-use dashboard and excellent documentation
- No vendor lock-in - uses your own AWS account and can "eject" anytime
- Generous free tier with affordable monthly plans
- 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.
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 Feb. 12, 2026, and for Fly.io on Aug. 24, 2026.