Staxly

Supabase vs Flagsmith

The open source Firebase alternative with Postgres
vs. Open-source feature flags + remote config — SaaS, private cloud, self-host

Supabase websiteFlagsmith website

Pricing tiers

Supabase

Free
Perfect for experiments. Projects pause after 7 days inactivity.
Free
Pro
Production-ready. Usage-based overages apply.
$25/mo
Team
For teams; includes SOC2 attestation and priority support.
$599/mo
Enterprise
Custom quotas, HIPAA compliance, dedicated support.
Custom
Supabase website

Flagsmith

Free
$0. 50,000 API requests/mo. 1 team member. Unlimited flags. Community support.
Free
Self-hosted
$0 (OSS). Host yourself via Docker/K8s. Fair-source license (non-compete).
$0 base (usage-based)
Start-up
$40/mo. 1,000,000 API requests/mo. 3 team members. Standard support.
$40/mo
Scale-up
$200/mo. 5,000,000 API requests. 10 team members. Priority support + SLA.
$200/mo
Enterprise
Custom. Unlimited API requests, SSO, SAML, RBAC, audit logs, on-prem.
Custom
Flagsmith website

Free-tier quotas head-to-head

Comparing free on Supabase vs free on Flagsmith.

MetricSupabaseFlagsmith
bandwidth gb5 GB/month
db storage gb0.5 GB
edge invocations500000 invocations/month
file storage gb1 GB
mau50000 users/month
realtime messages2000000 messages/month

Features

Supabase · 24 features

  • AuthenticationComplete JWT-based auth: passwords, magic links, OTP, OAuth, SSO, phone, MFA.
  • Backups & PITRAutomatic daily backups + Point-in-Time Recovery (WAL-G). 14-day default PITR wi
  • Compute InstancesUpgradeable DB compute: Micro, Small, Medium, Large. Affects CPU, RAM, and conne
  • Connection PoolingSupavisor pooler: Session mode (persistent) and Transaction mode (serverless). D
  • Cron JobsScheduled recurring jobs via pg_cron. Trigger DB functions, edge functions, or H
  • Custom DomainsConfigure custom hostname for API endpoints with SSL certificate management.
  • Database WebhooksAsync HTTP callbacks on INSERT/UPDATE/DELETE via pg_net extension.
  • Edge FunctionsTypeScript (Deno runtime) functions deployed globally at the edge. Supports secr
  • Full-Text SearchPostgreSQL native FTS: to_tsvector, to_tsquery, GIN indexes, fuzzy matching, wei
  • Image TransformationsOn-the-fly resize, crop, quality (20-100), WebP auto-format. Smart CDN caching.
  • Log DrainsRoute all stack logs to HTTP, Datadog, Loki, Sentry, S3, OTLP, or Axiom. Up to 2
  • Metrics API~200 Prometheus-compatible Postgres metrics. OpenTelemetry export to Datadog, Gr
  • Network RestrictionsCIDR allowlist for database access. Multiple IP ranges supported. Pro+ plan.
  • OAuth 2.1 ServerUse Supabase Auth as OAuth provider. Custom Access Token Hooks for claim injecti
  • pgvectorStore and search vector embeddings in Postgres. Supports HNSW/Flat indexes, cosi
  • PostgreSQL DatabaseFull PostgreSQL per project: SQL editor, table editor, CSV import, 50+ extension
  • PostgreSQL Extensions50+ pre-installed extensions: uuid-ossp, pgvector, pg_cron, plv8, pgtap, pg_net,
  • Preview BranchesEphemeral or persistent DB branches for isolated testing. Git integration, auto-
  • QueuesExactly-once message queues built on pgmq. Stored in Postgres with configurable
  • Read ReplicasAsync read-only replicas in multiple regions. Geo-routing, replication lag monit
  • RealtimeWebSocket subscriptions for DB changes (INSERT/UPDATE/DELETE), broadcast, and pr
  • Row Level SecuritySQL-native access control; policies auto-filter rows based on auth.uid() / auth.
  • SSL EnforcementRequire TLS for all DB connections. Configurable: required, preferred, disabled.
  • StorageFiles, Analytics (Iceberg), and Vector buckets with global CDN (285+ cities) and

Flagsmith · 14 features

  • A/B TestingMultivariate flag splits.
  • Audit LogFull history of flag changes.
  • Change RequestsApproval workflow for flag changes.
  • Edge APIGlobal low-latency flag eval.
  • Feature FlagsBoolean + multivariate + JSON flags.
  • Local EvaluationServer SDKs eval flags locally — no per-req API call.
  • Percentage RolloutsGradual traffic ramp.
  • Remote ConfigNon-boolean config values.
  • Role-Based AccessFine-grained permissions.
  • Scheduled FlagsTime-based flag changes.
  • SegmentsRule-based targeting.
  • Self-HostingDocker/Helm install.
  • SSO + SAMLEnterprise SSO.
  • WebhooksOutbound event streaming.

Developer interfaces

KindSupabaseFlagsmith
CLISupabase CLIFlagsmith CLI
SDKC# SDK, Flutter SDK, JavaScript SDK, Kotlin SDK, Python SDK, Swift SDKflagsmith-android, flagsmith-go, flagsmith-ios, flagsmith-java, flagsmith-js (browser), flagsmith-nodejs, flagsmith-python, flagsmith-ruby
RESTManagement API, REST API (PostgREST)Flagsmith REST API
GRAPHQLGraphQL (pg_graphql)
MCPSupabase MCP Server
OTHERRealtime (WebSocket)Flagsmith Dashboard, Flagsmith Webhooks
Staxly is an independent catalog of developer platforms. Some links to Supabase and Flagsmith may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.

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