Fly.io vs Heroku
Fly.io vs Heroku 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 Heroku?
Heroku killed its free tier and raised prices. Runsite gives you EU hosting, transparent pricing, and a free tier that actually stays free.
// heroku problems → runsite solutions
Sound Familiar?
Every Heroku frustration, solved.
Heroku problem
"My $7/mo dyno sleeps after 30 min"
Eco dynos spin down constantly. Cold starts kill your API response times and user experience.
Runsite solution
Always-on containers, even on free tier
No sleep. No cold starts. Your app runs 24/7 on dedicated resources in EU data centers.
Heroku problem
"I got a $2,400 bill I didn't expect"
Heroku's autoscaling and add-on pricing is opaque. Surprise invoices are a rite of passage.
Runsite solution
Hard spending limits + alerts
Set a monthly cap. Get Telegram alerts at 80%. We physically cannot charge you more than your limit.
Heroku problem
"Free tier is gone. Hobby is $7/mo per app"
Heroku removed free dynos in 2022. A simple side project now costs $7+/mo minimum.
Runsite solution
Permanent free tier, no credit card
Run side projects, prototypes, and demos forever. Free means free — not "free for 90 days".
// comparison
Runsite vs Heroku
Side-by-side. No marketing fluff — just facts.
| Feature | Runsite | Heroku |
|---|---|---|
| Free Tier | ✓ Permanent | ✗ Removed in 2022 |
| Basic Web Service | €5/mo | $7.00/mo |
| Web Standard (1 vCPU, 1GB) | €12/mo | $25/mo |
| Managed PostgreSQL | €5/mo | $9/mo |
| Data Region | ✓ EU only (Frankfurt, eu-central) | US default, EU = Enterprise only |
| GDPR Compliance | ✓ EU entity, full compliance | ✗ US company (Salesforce) |
| Spending Limits | ✓ Hard cap + alerts | ✗ No built-in limits |
| Sleep / Cold Starts | ✓ Always-on | Eco dynos sleep after 30min |
// why consider runsite
Beyond Fly.io and Heroku
EU PaaS for indie developers and small European startups. One region: Frankfurt.
EU-First Infrastructure
While Fly.io and Heroku 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 Heroku?
Neither Fly.io nor Heroku 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 Heroku?
Free tiers on both Fly.io and Heroku 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 Heroku 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 Heroku?
Pricing on both Fly.io and Heroku 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 Heroku debate. Deploy on Runsite.
Start Free on Runsite →