OneSignal vs Supabase
Mobile + web push, email, SMS, and in-app messaging at consumer scale
vs. The open source Firebase alternative with Postgres
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
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
Free-tier quotas head-to-head
Comparing free on OneSignal vs free on Supabase.
| Metric | OneSignal | Supabase |
|---|---|---|
| active journeys | 1 journeys | — |
| bandwidth gb | — | 5 GB/month |
| db storage gb | — | 0.5 GB |
| edge invocations | — | 500000 invocations/month |
| email monthly | 10000 emails/mo | — |
| file storage gb | — | 1 GB |
| mau | — | 50000 users/month |
| mobile push | Unlimited subscribers | — |
| realtime messages | — | 2000000 messages/month |
| web push subscribers | 10000 subscribers | — |
Features
OneSignal · 12 features
- A/B Testing — Split testing across push, email, in-app.
- Analytics + Cohorts — Delivery, open, click, conversion metrics + retention cohorts.
- Email — Transactional + marketing email with templates.
- Frequency Capping — Limit message frequency per user.
- In-App Messaging — In-app banners, modals, surveys, carousels triggered by events.
- Intelligent Delivery — Optimize send time per user with ML.
- Journeys — Multi-step automations with branching, delays, actions.
- Live Activities — iOS Dynamic Island + Live Activities.
- Mobile Push — iOS (APNs), Android (FCM/HMS) push notifications.
- Segments — Dynamic audience targeting by tags, location, behavior.
- SMS — Two-way SMS in 200+ countries.
- Web Push — Browser push via service workers (Chrome, Firefox, Edge, Safari, Opera).
Supabase · 24 features
- Authentication — Complete JWT-based auth: passwords, magic links, OTP, OAuth, SSO, phone, MFA.
- Backups & PITR — Automatic daily backups + Point-in-Time Recovery (WAL-G). 14-day default PITR wi…
- Compute Instances — Upgradeable DB compute: Micro, Small, Medium, Large. Affects CPU, RAM, and conne…
- Connection Pooling — Supavisor pooler: Session mode (persistent) and Transaction mode (serverless). D…
- Cron Jobs — Scheduled recurring jobs via pg_cron. Trigger DB functions, edge functions, or H…
- Custom Domains — Configure custom hostname for API endpoints with SSL certificate management.
- Database Webhooks — Async HTTP callbacks on INSERT/UPDATE/DELETE via pg_net extension.
- Edge Functions — TypeScript (Deno runtime) functions deployed globally at the edge. Supports secr…
- Full-Text Search — PostgreSQL native FTS: to_tsvector, to_tsquery, GIN indexes, fuzzy matching, wei…
- Image Transformations — On-the-fly resize, crop, quality (20-100), WebP auto-format. Smart CDN caching. …
- Log Drains — Route 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 Restrictions — CIDR allowlist for database access. Multiple IP ranges supported. Pro+ plan.
- OAuth 2.1 Server — Use Supabase Auth as OAuth provider. Custom Access Token Hooks for claim injecti…
- pgvector — Store and search vector embeddings in Postgres. Supports HNSW/Flat indexes, cosi…
- PostgreSQL Database — Full PostgreSQL per project: SQL editor, table editor, CSV import, 50+ extension…
- PostgreSQL Extensions — 50+ pre-installed extensions: uuid-ossp, pgvector, pg_cron, plv8, pgtap, pg_net,…
- Preview Branches — Ephemeral or persistent DB branches for isolated testing. Git integration, auto-…
- Queues — Exactly-once message queues built on pgmq. Stored in Postgres with configurable …
- Read Replicas — Async read-only replicas in multiple regions. Geo-routing, replication lag monit…
- Realtime — WebSocket subscriptions for DB changes (INSERT/UPDATE/DELETE), broadcast, and pr…
- Row Level Security — SQL-native access control; policies auto-filter rows based on auth.uid() / auth.…
- SSL Enforcement — Require TLS for all DB connections. Configurable: required, preferred, disabled.
- Storage — Files, Analytics (Iceberg), and Vector buckets with global CDN (285+ cities) and…
Developer interfaces
| Kind | OneSignal | Supabase |
|---|---|---|
| CLI | — | Supabase CLI |
| SDK | OneSignal Android SDK, onesignal_flutter, OneSignal iOS SDK, @onesignal/node-onesignal, OneSignal Unity SDK, OneSignal Web SDK, react-native-onesignal | C# SDK, Flutter SDK, JavaScript SDK, Kotlin SDK, Python SDK, Swift SDK |
| REST | OneSignal REST API | Management API, REST API (PostgREST) |
| GRAPHQL | — | GraphQL (pg_graphql) |
| MCP | — | Supabase MCP Server |
| OTHER | Outbound Webhooks | Realtime (WebSocket) |
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