Staxly

OneSignal vs Supabase

Mobile + web push, email, SMS, and in-app messaging at consumer scale
vs. The open source Firebase alternative with Postgres

OneSignal websiteSupabase website

Pricing tiers

OneSignal

Free
Unlimited mobile push, 10K web push subs, 10K email/mo, 1 journey. GDPR compliant.
Free
Growth
$19/mo + usage. 20K email/mo included, then $1.50/1K. 3 journeys. Advanced in-app.
$19/mo
Professional
Custom. Unlimited volume, 20 journeys, CSV export, prioritized support.
Custom
Enterprise
Custom. Dedicated CSM, SLA, frequency capping, advanced permissions, HIPAA options.
Custom
OneSignal 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 OneSignal vs free on Supabase.

MetricOneSignalSupabase
active journeys1 journeys
bandwidth gb5 GB/month
db storage gb0.5 GB
edge invocations500000 invocations/month
email monthly10000 emails/mo
file storage gb1 GB
mau50000 users/month
mobile pushUnlimited subscribers
realtime messages2000000 messages/month
web push subscribers10000 subscribers

Features

OneSignal · 12 features

  • A/B TestingSplit testing across push, email, in-app.
  • Analytics + CohortsDelivery, open, click, conversion metrics + retention cohorts.
  • EmailTransactional + marketing email with templates.
  • Frequency CappingLimit message frequency per user.
  • In-App MessagingIn-app banners, modals, surveys, carousels triggered by events.
  • Intelligent DeliveryOptimize send time per user with ML.
  • JourneysMulti-step automations with branching, delays, actions.
  • Live ActivitiesiOS Dynamic Island + Live Activities.
  • Mobile PushiOS (APNs), Android (FCM/HMS) push notifications.
  • SegmentsDynamic audience targeting by tags, location, behavior.
  • SMSTwo-way SMS in 200+ countries.
  • Web PushBrowser push via service workers (Chrome, Firefox, Edge, Safari, Opera).

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

KindOneSignalSupabase
CLISupabase CLI
SDKOneSignal Android SDK, onesignal_flutter, OneSignal iOS SDK, @onesignal/node-onesignal, OneSignal Unity SDK, OneSignal Web SDK, react-native-onesignalC# SDK, Flutter SDK, JavaScript SDK, Kotlin SDK, Python SDK, Swift SDK
RESTOneSignal REST APIManagement API, REST API (PostgREST)
GRAPHQLGraphQL (pg_graphql)
MCPSupabase MCP Server
OTHEROutbound WebhooksRealtime (WebSocket)
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