Fly.io vs Vercel
Fly.io vs Vercel compared for European indie developers and small startups. Pricing, EU jurisdiction, GDPR posture — and why Runsite (an EU-registered PaaS in Frankfurt) is worth a look.
// fly.io problems → runsite solutions
Sound Familiar?
Every Fly.io frustration, solved.
Fly.io problem
"Fly.io has a steep learning curve"
Machines API, fly.toml, volumes, regions — Fly.io is powerful but requires significant DevOps knowledge.
Runsite solution
Git push and done
Connect your GitHub repo, pick a region, deploy. No config files, no CLI learning curve.
Fly.io problem
"Fly.io is a US company"
Even with EU regions, Fly.io is subject to US jurisdiction and the CLOUD Act.
Runsite solution
EU-registered entity
Runsite is an EU company. Your data is governed by European law, period.
Fly.io problem
"Usage-based billing is unpredictable"
Per-second VM billing and bandwidth charges make it hard to predict monthly costs.
Runsite solution
Fixed plans + hard caps
Know exactly what you'll pay. Set a spending limit that can't be exceeded.
// comparison
Runsite vs Fly.io
Side-by-side. No marketing fluff — just facts.
| Feature | Runsite | Fly.io |
|---|---|---|
| Setup Complexity | ✓ Git push deploy | flyctl CLI + TOML config |
| EU Data Centers | ✓ Frankfurt (eu-central) | ✓ Multiple EU regions |
| GDPR Compliance | ✓ EU entity, full compliance | ✗ US company |
| Free Tier | ✓ Permanent | ✓ $5/mo free allowance |
| Managed PostgreSQL | ✓ From €5/mo | ✓ Fly Postgres |
| Docker Support | ✓ Any Dockerfile | ✓ Firecracker VMs |
| Spending Limits | ✓ Hard cap + alerts | ✗ Usage-based only |
| Learning Curve | ✓ Minimal — connect GitHub, deploy | Steep — Machines API, volumes, TOML |
// the other side
What about Vercel?
Vercel is great for frontend. But if you need backend hosting in Europe with GDPR compliance, Runsite is the answer.
// vercel problems → runsite solutions
Sound Familiar?
Every Vercel frustration, solved.
Vercel problem
"Vercel is frontend-only"
Need to deploy a Python API or Go service? Vercel's serverless model doesn't support long-running backend processes.
Runsite solution
Full container hosting, any stack
Deploy Django, FastAPI, Express, Go, or Rust in persistent containers. No cold starts, no function timeouts.
Vercel problem
"Origin servers are in the US"
Vercel's edge caches content globally, but your serverless functions and data origin are US-based.
Runsite solution
EU-only infrastructure
Compute, storage, and databases all run in EU data centers. True data residency, not just edge caching.
Vercel problem
"Surprise bills from function invocations"
Serverless pricing is unpredictable. A traffic spike can lead to unexpected charges.
Runsite solution
Fixed pricing + hard spending caps
Predictable monthly bills. Set a cap, get alerts. No pay-per-request surprises.
// comparison
Runsite vs Vercel
Side-by-side. No marketing fluff — just facts.
| Feature | Runsite | Vercel |
|---|---|---|
| Backend Hosting | ✓ Full containers, any stack | Serverless functions only |
| EU Data Centers | ✓ Frankfurt (eu-central) | Edge only, origin = US |
| GDPR Compliance | ✓ EU entity, full compliance | ✗ US company |
| Managed PostgreSQL | ✓ From €5/mo | Via Vercel Postgres (Neon) |
| Docker Support | ✓ Any Dockerfile | ✗ Not supported |
| Spending Limits | ✓ Hard cap + alerts | Soft limits only |
| Frontend Hosting | Static files via S3 | ✓ Best-in-class CDN |
| Free Tier | ✓ Permanent | ✓ With limits |
// why consider runsite
Beyond Fly.io and Vercel
EU PaaS for indie developers and small European startups. One region: Frankfurt.
EU-First Infrastructure
While Fly.io and Vercel default to US markets, Runsite is built exclusively for European developers. Frankfurt (eu-central) region, EU entity, EU jurisdiction — no transatlantic transfers.
Real GDPR Compliance
EU-registered entity. Your data is governed by European law. No US jurisdiction, no CLOUD Act.
Predictable Pricing
No per-invocation charges, no surprise bills. Fixed plans with hard spending caps and Telegram alerts.
Common Questions
FAQ
Which is better for EU hosting, Fly.io or Vercel?
Neither Fly.io nor Vercel is EU-native. Both are US-headquartered and route the majority of traffic through US data centers. For genuine EU data residency, an EU-registered platform like Runsite is the safer choice — a Frankfurt (eu-central) region under EU jurisdiction, no transatlantic transfers, no CLOUD Act exposure.
Which has the better free tier, Fly.io or Vercel?
Free tiers on both Fly.io and Vercel change frequently and often include compute or bandwidth caps that expire after a trial period. If a permanent free tier matters, evaluate the current terms on each provider before committing.
Is Fly.io or Vercel GDPR-compliant?
Both can be configured to support GDPR-compliant workloads via Data Processing Agreements (DPAs), but as US entities they remain subject to the CLOUD Act. For workloads where US jurisdiction is a hard blocker, an EU-headquartered provider is required.
What is the cheapest way to deploy a side project — Fly.io or Vercel?
Pricing on both Fly.io and Vercel can scale unpredictably with traffic or build minutes. Hard spending caps are not available on either platform. Predictable monthly pricing with usage caps is a differentiator to look for elsewhere.
// explore alternatives
Try the European Alternative
Skip the Fly.io vs Vercel debate. Deploy on Runsite.
Start Free on Runsite →