PaaS platforms let you deploy applications without managing servers. Git push to deploy. But the landscape has changed since Heroku pioneered the space.
Platform Comparison
| Factor | Heroku | Railway | Render | Fly.io |
|---|---|---|---|---|
| Founded | 2007 | 2020 | 2019 | 2017 |
| Free tier | Eco ($5/month) | $5 credit/month | Free (static + services) | $5 credit/month |
| Starter pricing | $7/month (Basic) | Usage-based | $7/month | Usage-based |
| Sleep on free tier | Yes (30 min) | No | Yes (15 min spin-down) | No |
| Deploy method | Git push, Docker | Git push, Docker | Git push, Docker | Docker, flyctl |
| Languages | Most (buildpacks) | Most (Nixpacks) | Most (auto-detect) | Docker (any) |
| Databases | PostgreSQL add-on ($) | PostgreSQL, MySQL, Redis | PostgreSQL, Redis | PostgreSQL, Redis |
| Region options | US, EU | US, EU, Asia | US, EU | 30+ regions globally |
| Auto-scaling | Paid (Performance+) | Yes | Yes (paid) | Yes |
| Preview environments | Heroku Review Apps | Yes | Yes | No |
| Custom domains | Yes | Yes | Yes | Yes |
| SSL | Automated | Automated | Automated | Automated |
| Cron jobs | Heroku Scheduler (add-on) | Built-in | Built-in (cron jobs) | No (use separate service) |
| WebSockets | Yes | Yes | Yes | Yes |
| Private networking | Private Spaces ($) | Yes | Yes (paid) | Yes (WireGuard) |
| Build speed | Slow-moderate | Fast | Moderate | Moderate |
| Documentation | Extensive | Good | Good | Excellent |
| Community | Large (mature) | Growing | Growing | Active |
Pricing at Scale (2 services + PostgreSQL)
| Platform | Basic Config | Production Config |
|---|---|---|
| Heroku | $50/month | $200+/month |
| Railway | $20-40/month | $80-150/month |
| Render | $30-50/month | $100-200/month |
| Fly.io | $15-30/month | $60-120/month |
When Heroku Wins
- Enterprise requirements: SOC 2, HIPAA compliance add-ons
- Established teams: Familiar workflows, extensive documentation
- Salesforce ecosystem: Owned by Salesforce
- Add-on marketplace: 200+ pre-configured services
- Legacy apps: Already on Heroku, migration not worth it
When Railway Wins
- Modern developer experience: Best dashboard and CLI
- Usage-based pricing: Pay for what you compute
- Database included: Provision databases in seconds
- Preview environments: Automatic per-PR deployments
- Speed: Nixpacks build faster than most alternatives
When Render Wins
- Heroku replacement: Similar workflow, better pricing
- Static sites: Free hosting for static/JAMstack sites
- Background workers: Easy worker process management
- Simple needs: Web service + database, nothing complex
- Predictable pricing: Flat monthly rates
When Fly.io Wins
- Global distribution: Deploy to 30+ regions
- Edge performance: Run apps close to users worldwide
- Docker flexibility: Any language, any framework
- Advanced networking: WireGuard-based private networking
- Cost optimization: Most affordable at scale
Our Recommendation
For backend services and APIs that do not fit the Vercel/Cloudflare edge deployment model, we recommend Railway for its developer experience and fair pricing, or Fly.io for globally distributed applications. Heroku remains viable for enterprise environments requiring compliance certifications.
Deploy your application on the right platform.