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Fly.io vs Heroku

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 2026Heroku · updated Jul 2026

Web app

MetricFly.ioHeroku
Cost at 1k DAU$32.10/mo$55/mo
Cost at 100 DAU$5.95/mo$14/mo
Cost at 1K DAU$32.10/mo$55/mo
Cost at 10K DAU$190.95/mo$55/mo
Cost at 100K DAU$1782.20/mo$64/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
Fit score87/10083/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

SaaS product

MetricFly.ioHeroku
Cost at 1k DAU$32.50/mo$55.40/mo
Cost at 100 DAU$5.95/mo$14/mo
Cost at 1K DAU$32.50/mo$55.40/mo
Cost at 10K DAU$196.55/mo$60.60/mo
Cost at 100K DAU$1841.80/mo$123.60/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Cloudflare · Queues · Paid
  • AWS (serverless) · EventBridge Scheduler · Free
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
  • Cloudflare · Queues · Paid
  • Heroku · Scheduler · Free add-on
Fit score68/10064/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

E-commerce store

MetricFly.ioHeroku
Cost at 1k DAU$37.06/mo$63.73/mo
Cost at 100 DAU$6.45/mo$14.81/mo
Cost at 1K DAU$37.06/mo$63.73/mo
Cost at 10K DAU$240.49/mo$142.84/mo
Cost at 100K DAU$2277.52/mo$942.85/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Fly.io · Tigris · Standard
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
  • Netlify · Blobs · Metered
Fit score88/10065/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

API / backend service

MetricFly.ioHeroku
Cost at 1k DAU$32.10/mo$55/mo
Cost at 100 DAU$5.95/mo$14/mo
Cost at 1K DAU$32.10/mo$55/mo
Cost at 10K DAU$190.95/mo$55/mo
Cost at 100K DAU$1782.20/mo$64/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
Fit score97/10083/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

Mobile app backend

MetricFly.ioHeroku
Cost at 1k DAU$37.06/mo$63.73/mo
Cost at 100 DAU$6.45/mo$14.81/mo
Cost at 1K DAU$37.06/mo$63.73/mo
Cost at 10K DAU$240.49/mo$142.84/mo
Cost at 100K DAU$2277.52/mo$942.85/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Fly.io · Tigris · Standard
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
  • Netlify · Blobs · Metered
Fit score98/10065/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

Realtime / collaborative

MetricFly.ioHeroku
Cost at 1k DAU$32.10/mo$55/mo
Cost at 100 DAU$5.95/mo$14/mo
Cost at 1K DAU$32.10/mo$55/mo
Cost at 10K DAU$190.95/mo$55/mo
Cost at 100K DAU$1782.20/mo$64/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
Fit score98/10083/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

Jobs & pipelines

MetricFly.ioHeroku
Cost at 1k DAU$32.50/mo$55.40/mo
Cost at 100 DAU$5.95/mo$14/mo
Cost at 1K DAU$32.50/mo$55.40/mo
Cost at 10K DAU$196.55/mo$60.60/mo
Cost at 100K DAU$1841.80/mo$123.60/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Cloudflare · Queues · Paid
  • AWS (serverless) · EventBridge Scheduler · Free
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
  • Cloudflare · Queues · Paid
  • Heroku · Scheduler · Free add-on
Fit score78/10064/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

AI app

MetricFly.ioHeroku
Cost at 1k DAU$37.06/mo$63.73/mo
Cost at 100 DAU$6.45/mo$14.81/mo
Cost at 1K DAU$37.06/mo$63.73/mo
Cost at 10K DAU$240.49/mo$142.84/mo
Cost at 100K DAU$2277.52/mo$942.85/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Fly.io · Tigris · Standard
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
  • Netlify · Blobs · Metered
Fit score88/10055/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

Internal tool

MetricFly.ioHeroku
Cost at 1k DAU$32.10/mo$55/mo
Cost at 100 DAU$5.95/mo$14/mo
Cost at 1K DAU$32.10/mo$55/mo
Cost at 10K DAU$190.95/mo$55/mo
Cost at 100K DAU$1782.20/mo$64/mo
Services used
  • Fly.io · Machines · Shared CPU 1x
  • Fly.io · Postgres · Standard
  • Heroku · Dynos · Eco
  • Heroku · Heroku Postgres · Standard-0
Fit score87/10083/100
Verdict: It flips at scale: Fly.io cheaper at 1k DAU, Heroku at 100k.

These numbers assume a typical profile

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