Fly.io vs Supabase: Which One Fits Your Solo Dev Stack?
Free tier limits, real costs for 1-10 users, and honest "not for" warnings. The Solo Dev decision guide for Fly.io vs Supabase.
⚡ Quick Verdict
Supabase edges ahead with a 4.8/5 rating. However, the best choice depends on your team size, budget, and workflow needs. Read on for the full breakdown.
💰 Cost by Team Size
| Team Size | Fly.io | Supabase |
|---|---|---|
| Solo (1 user) | $0/mo | $0/mo |
| Small (5 users) | $10/mo | $25/mo |
| Growing (10 users) | $30/mo | $25/mo |
| Free Tier | ✅ See website | ✅ 500MB database. 1GB file storage. 50K monthly active users. 2 million Edge Function invocations. |
Pricing Plans
| Plan | Fly.io | Supabase |
|---|---|---|
| Free Plan | ✅ Yes | ✅ Yes |
| Pay-as-you-go | $0/mo | $25/mo |
Feature Comparison
| Feature | Fly.io | Supabase |
|---|
Pros & Cons
Fly.io
✅ Pros
- Modern and well-maintained
- Good free tier
- Active community
❌ Cons
- Learning curve for advanced features
- Pricing scales with usage
Supabase
✅ Pros
- Full Postgres database for free
- Built-in auth with social logins
- Auto-generated REST and GraphQL APIs
- Real-time subscriptions
- Open source — no vendor lock-in
❌ Cons
- Free tier pauses after 1 week of inactivity
- 500MB database limit on free tier
- Edge Functions are limited
- Dashboard can be slow
- Some features are still in beta
Who Should Use What?
✅ Choose Fly.io if...
- You are a solo developers
- You are a small startups
- You are a side projects
🚫 Skip if...
- Enterprise with complex compliance
✅ Choose Supabase if...
- You are a full-stack apps needing backend quickly
- You are a solo devs wanting free postgres
- You are a projects needing auth + database + storage
🚫 Skip if...
- High-write workloads (use dedicated Postgres)
- Enterprise compliance
- Apps needing custom backend logic
🏆 Our Verdict
Both Fly.io (4.3/5) and Supabase (4.8/5) are excellent tools in their category. Supabase takes a slight edge overall, but the best choice ultimately depends on your team's specific needs, budget, and existing tool ecosystem.
Frequently Asked Questions
Is Fly.io better than Supabase?
It depends on your needs. Fly.io excels in some areas while Supabase has its own strengths. Read our full comparison above to see which tool fits your specific requirements.
How does Fly.io pricing compare to Supabase?
Fly.io starts at Free / $0/mo, while Supabase starts at Free / $25/mo. Both offer different value propositions — check our pricing comparison section for a detailed breakdown.
Can I migrate from Fly.io to Supabase?
Yes, most B2B tools offer data import/export features. Supabase typically provides migration guides and sometimes even dedicated support for switching from Fly.io.
Which is easier to use, Fly.io or Supabase?
Ease of use depends on your team's experience and workflow preferences. We evaluated both tools on usability — see our feature comparison scores above for details.
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