Split.io vs Supabase: Full Comparison (2026)
Pricing, features, scores, and a clear verdict on which one is right for you.
The bottom line
Split.io positions itself as "feature flags plus experimentation" while Supabase goes after "open-source firebase alternative with postgres" — so the right pick depends on which problem you're actually solving. Both use freemium pricing, but Split.io charges per seat while Supabase charges per project — a meaningful difference for larger teams. Split.io (founded 2015) has had more time to build out its ecosystem and integrations, while Supabase (2020) tends to move faster on modern UX and newer workflows.
At a glance
| Split.io | Supabase | |
|---|---|---|
| Our score | 81/100 | 88/100 |
| Starting price | Free | Free |
| Free tier | Yes | Yes |
| Best for | Feature flags plus experimentation | Open-source Firebase alternative with Postgres |
Pricing comparison
Calculate your cost
Feature comparison
core
| Feature | Split.io | Supabase |
|---|---|---|
| Feature flags | Yes | No |
| Targeting rules | Yes | No |
| Percentage rollouts | Yes | No |
| Kill switches | Yes | No |
| Multi-environment | Yes | No |
| PostgreSQL database | No | Yes |
| Authentication | No | Yes |
| Storage | No | Yes |
| Edge Functions | No | Yes |
| Realtime subscriptions | No | Yes |
Ratings breakdown
What the data tells us
How costs scale
Supabase's pricing curve is steeper — the jump from its entry plan to its top tier is more dramatic than Split.io's. If you're a growing team, model the 12-month cost at your projected team size, not just today's. Split.io tends to stay more predictable as you add seats or usage.
Key capabilities you'd miss
Choosing Split.io means going without PostgreSQL database, Authentication, Storage (which Supabase offers). Choosing Supabase means losing Feature flags, Targeting rules, Percentage rollouts. These are the features that typically drive the final decision — check whether your workflow depends on any of them before committing.
Choose Split.io if...
- You want a free tier to get started
- You value powerful features over simplicity
- Getting strong value for money is a priority
Choose Supabase if...
- You want a free tier to get started
- You value an intuitive, easy-to-use interface
- Getting strong value for money is a priority
Frequently asked questions
Is Split.io or Supabase better?
Supabase scores 88/100 compared to Split.io's 81/100 on VendorVS. However, the best choice depends on your needs — Split.io excels at ease of use (7/10) while Supabase scores 8/10.
How much does Split.io cost compared to Supabase?
Split.io starts at free (free tier available). Supabase starts at free (free tier available). Split.io is the more affordable option.
Does Split.io or Supabase have a free plan?
Yes, both Split.io and Supabase offer free tiers, so you can try each before committing to a paid plan.
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