Fly.io vs Render — free-tier comparison
Fly.io and Render can both run backend applications and containers, but the operating model is different. Fly.io exposes Machines, regions, volumes and networking; Render gives a simpler PaaS workflow and a documented free web-service instance with sleep.
At a glance
Choose Render for a hobby web service when ease of deployment matters and a one-minute cold start is acceptable. Choose Fly.io when container control, regional placement or volumes justify usage-based billing and more operational responsibility.
Choose Fly.io if
- You need regional Machines, volumes or private networking control
- Your application already has a production-ready Docker image
- You accept usage-based billing and infrastructure operations
Choose Render if
- You want the simplest Git-to-web-service workflow
- A sleeping free demo instance is acceptable
- You prefer managed language runtimes and dashboard configuration
Key differences
| Fly.io | Render | |
|---|---|---|
| Free model | Legacy allowances; new use is trial or usage based | Documented Free web-service instance |
| Idle behavior | Depends on Machine configuration and paid usage | Free services sleep after 15 minutes |
| Persistent disk | Volumes available with usage cost | Not available on Free web services |
| Operational control | Higher | Simpler managed PaaS |
Container Hosting
7-day trial capped at 2 total VM hours; no always-free tier for new organizations
Paid from Pay as you go
- 2 total VM hours across trial machines
- Up to 10 machines
- Up to 4 GB RAM and 2 vCPUs per machine
- Runs any Docker container as fast-booting micro-VMs
- Global deployment across 18 documented regions with Anycast IPs
- The new-account trial ends after 7 days or only 2 total VM hours
Best for
- Containerized full apps and APIs deployed globally
- Latency-sensitive services running near users
PaaS
512 MB web service, 750 hours/month, sleeps after 15 minutes; free Postgres expires after 30 days
Paid from $7/month
- Free static sites
- 750 hours/month for web services
- Free managed PostgreSQL (30 days)
- One platform for web services, static sites, databases, workers and cron
- Auto-deploys from Git with free TLS
- Free web services sleep after about 15 minutes of inactivity
Best for
- Full-stack apps and APIs that need an always-deployable server
- Side projects that want a free database to start
The catch?
Fly.io
- Trial that expires
- Sleeps when idle
- Some constraints remain unconfirmed
Render
- Sleeps when idle
- Suspends at the limit
- Some constraints remain unconfirmed
Detailed comparison
| Fly.io | Render | |
|---|---|---|
| Free tier & pricing | ||
| Free tier ↑ better | 7-day / 2-hour trial | Perpetual (sleeps) |
| Paid from ↓ better | Usage-based | $7/mo |
| Regions ↑ better | 18 regions | 5 regions |
| PaaS | ||
| Included RAM ↑ better | — | 512 MB |
| Compute hours ↑ better | — | 750 hrs/mo |
| Container Hosting | ||
| Included RAM ↑ better | Up to 4 GB | — |
| Compute hours ↑ better | 2 total VM hours | — |
FAQ
Render documents a free web-service instance with sleep. Fly.io's old broad allowances are legacy, so new users should plan around current trial and usage pricing.
Fly.io offers deeper container infrastructure control. Render is easier for a standard HTTP container that does not need a free persistent disk.
Use a paid configuration on either platform. Choose from runtime control, regions, storage, networking and team operational comfort rather than the demo free tier.