Staxly

Formspree vs Supabase

Form backend as a service — point your HTML form at a URL and done
vs. The open source Firebase alternative with Postgres

Formspree websiteSupabase website

Pricing tiers

Formspree

Free
$0. 50 submissions/mo. 1 form. Formspree branding in emails. Basic spam filtering.
Free
Basic
$10/mo. 500 submissions/mo. Unlimited forms. Custom success redirect. Honeypot anti-spam.
$10/mo
Professional
$20/mo. 1,000 submissions/mo. reCAPTCHA, webhooks, integrations, rules engine.
$20/mo
Unlimited
$40/mo. 2,500 submissions. File uploads, team members, priority support.
$40/mo
Enterprise
Custom. SSO, SAML, HIPAA, high volume, dedicated support.
Custom
Formspree website

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

Free-tier quotas head-to-head

Comparing free on Formspree vs free on Supabase.

MetricFormspreeSupabase
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

Formspree · 11 features

  • Custom Success RedirectRedirect after submit.
  • Email NotificationsSubmissions delivered to inbox.
  • File UploadsAccept attachments (Unlimited).
  • IP FilteringBlock spam IPs.
  • React SDKHooks + state management.
  • Rules EngineConditional routing, auto-responders.
  • Spam ProtectionHoneypot + reCAPTCHA + keyword filter.
  • Submission AnalyticsVolume + source stats.
  • Team MembersMulti-user (Unlimited).
  • WebhooksPOST submissions to your server.
  • Zero BackendHTML <form action> → email.

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

Developer interfaces

KindFormspreeSupabase
CLISupabase CLI
SDK@formspree/core, @formspree/reactC# SDK, Flutter SDK, JavaScript SDK, Kotlin SDK, Python SDK, Swift SDK
RESTFormspree REST APIManagement API, REST API (PostgREST)
GRAPHQLGraphQL (pg_graphql)
MCPSupabase MCP Server
OTHERDirect HTML Form Submit, Formspree Dashboard, Formspree WebhooksRealtime (WebSocket)
Staxly is an independent catalog of developer platforms. Some links to Formspree and Supabase 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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