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Fly.io vs Hetzner

Monthly hosting costs for typical app profiles — computed with the same recommendation engine as StackPlan stack reports. Assumes balanced budget and ops preferences unless noted.

Pricing data:Fly.io · updated Jun 2025Hetzner · updated Jun 2025

Web app

MetricFly.ioHetzner
Cost at 1k DAU$32.10/moNot a fit for this app type
Cost at 100 DAU$5.95/moNot a fit for this app type
Cost at 1K DAU$32.10/moNot a fit for this app type
Cost at 10K DAU$190.95/moNot a fit for this app type
Cost at 100K DAU$1782.20/moNot a fit for this app type
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
Not a fit for this app type
Fit score78/100—
Verdict: Fly.io is the only viable option for this app type.

SaaS product

MetricFly.ioHetzner
Cost at 1k DAU$32.50/mo$27.75/mo
Cost at 100 DAU$5.95/mo$5.35/mo
Cost at 1K DAU$32.50/mo$27.75/mo
Cost at 10K DAU$196.55/mo$252.70/mo
Cost at 100K DAU$1841.80/mo$2503.95/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Cloudflare · Queues · Paid
  • AWS (serverless) · EventBridge Scheduler · Free
  • Hetzner · Cloud VPS · CX22
  • Railway · Postgres · Pro
  • Cloudflare · Queues · Paid
  • Cloudflare · Cron Triggers · Free
Fit score57/10063/100
Verdict: It flips at scale: Hetzner cheaper at 1k DAU, Fly.io at 100k.

E-commerce store

MetricFly.ioHetzner
Cost at 1k DAU$37.06/mo$31.75/mo
Cost at 100 DAU$6.45/mo$5.79/mo
Cost at 1K DAU$37.06/mo$31.75/mo
Cost at 10K DAU$240.49/mo$290.22/mo
Cost at 100K DAU$2277.52/mo$2874.23/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Fly.io · Tigris · Standard
  • Hetzner · Cloud VPS · CX22
  • Railway · Postgres · Pro
  • Hetzner · Volumes · Pay as you go
Fit score86/10070/100
Verdict: It flips at scale: Hetzner cheaper at 1k DAU, Fly.io at 100k.

API / backend service

MetricFly.ioHetzner
Cost at 1k DAU$32.10/moNot a fit for this app type
Cost at 100 DAU$5.95/moNot a fit for this app type
Cost at 1K DAU$32.10/moNot a fit for this app type
Cost at 10K DAU$190.95/moNot a fit for this app type
Cost at 100K DAU$1782.20/moNot a fit for this app type
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
Not a fit for this app type
Fit score88/100—
Verdict: Fly.io is the only viable option for this app type.

Mobile app backend

MetricFly.ioHetzner
Cost at 1k DAU$37.06/mo$31.75/mo
Cost at 100 DAU$6.45/mo$5.79/mo
Cost at 1K DAU$37.06/mo$31.75/mo
Cost at 10K DAU$240.49/mo$290.22/mo
Cost at 100K DAU$2277.52/mo$2874.23/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Fly.io · Tigris · Standard
  • Hetzner · Cloud VPS · CX22
  • Railway · Postgres · Pro
  • Hetzner · Volumes · Pay as you go
Fit score96/10070/100
Verdict: It flips at scale: Hetzner cheaper at 1k DAU, Fly.io at 100k.

Realtime / collaborative

MetricFly.ioHetzner
Cost at 1k DAU$32.10/mo$27.35/mo
Cost at 100 DAU$5.95/mo$5.35/mo
Cost at 1K DAU$32.10/mo$27.35/mo
Cost at 10K DAU$190.95/mo$247.10/mo
Cost at 100K DAU$1782.20/mo$2444.35/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Hetzner · Cloud VPS · CX22
  • Railway · Postgres · Pro
Fit score87/10080/100
Verdict: It flips at scale: Hetzner cheaper at 1k DAU, Fly.io at 100k.

Jobs & pipelines

MetricFly.ioHetzner
Cost at 1k DAU$32.50/mo$27.75/mo
Cost at 100 DAU$5.95/mo$5.35/mo
Cost at 1K DAU$32.50/mo$27.75/mo
Cost at 10K DAU$196.55/mo$252.70/mo
Cost at 100K DAU$1841.80/mo$2503.95/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Cloudflare · Queues · Paid
  • AWS (serverless) · EventBridge Scheduler · Free
  • Hetzner · Cloud VPS · CX22
  • Railway · Postgres · Pro
  • Cloudflare · Queues · Paid
  • Cloudflare · Cron Triggers · Free
Fit score67/10073/100
Verdict: It flips at scale: Hetzner cheaper at 1k DAU, Fly.io at 100k.

AI app

MetricFly.ioHetzner
Cost at 1k DAU$37.06/mo$31.75/mo
Cost at 100 DAU$6.45/mo$5.79/mo
Cost at 1K DAU$37.06/mo$31.75/mo
Cost at 10K DAU$240.49/mo$290.22/mo
Cost at 100K DAU$2277.52/mo$2874.23/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Fly.io · Tigris · Standard
  • Hetzner · Cloud VPS · CX22
  • Railway · Postgres · Pro
  • Hetzner · Volumes · Pay as you go
Fit score86/10070/100
Verdict: It flips at scale: Hetzner cheaper at 1k DAU, Fly.io at 100k.

Internal tool

MetricFly.ioHetzner
Cost at 1k DAU$32.10/moNot a fit for this app type
Cost at 100 DAU$5.95/moNot a fit for this app type
Cost at 1K DAU$32.10/moNot a fit for this app type
Cost at 10K DAU$190.95/moNot a fit for this app type
Cost at 100K DAU$1782.20/moNot a fit for this app type
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
Not a fit for this app type
Fit score78/100—
Verdict: Fly.io is the only viable option for this app type.

These numbers assume a typical profile

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