Staxly

Fly.io vs Supabase

Run your app close to users, globally
vs. The open source Firebase alternative with Postgres

Fly.io websiteSupabase website

Pricing tiers

Fly.io

Pay-as-you-go
No monthly fee. Machines billed per second. Free allocations: ~3 small shared machines + 3 GB volumes.
$0 base (usage-based)
Shared CPU 1x — 256 MB
Entry VM. 1 shared vCPU, 256 MB RAM. ~$2.02/month continuously on.
$2/mo
Performance 1x — 2 GB
Dedicated 1 vCPU, 2 GB RAM.
$32/mo
Reservation — Shared (1 yr)
$36/year for $5/mo credit (40% savings).
$36/mo
Shared CPU 8x — 16 GB
8 shared vCPU, 16 GB RAM.
$89/mo
Performance 16x — 128 GB
Dedicated 16 vCPU, 128 GB RAM.
$1014/mo
Enterprise
Custom. Dedicated capacity, SLA.
Custom
Fly.io 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 pay-as-you-go on Fly.io vs free on Supabase.

MetricFly.ioSupabase
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

Fly.io · 14 features

  • Auto Stop/StartMachines auto-stop when idle, start on request (like scale-to-zero).
  • CertsLet's Encrypt + wildcard certs managed.
  • Fly GPUA100/L40S/A10 on-demand GPU machines.
  • Fly Kubernetes (FKS)Managed Kubernetes on Fly machines.
  • Fly MachinesFirecracker microVMs. Start in <1s. Run any Docker image.
  • Fly PostgresManaged Postgres via Supabase partnership (2024). Also legacy self-run Postgres
  • fly-replay headersRoute request to another region at app level.
  • Fly VolumesPersistent SSD attached to a Machine. Encrypted at rest.
  • Global AnycastSingle IP routes to the closest region automatically.
  • LiteFSDistributed SQLite with primary/replica across regions.
  • Private Networks6PN WireGuard mesh. Connect machines across regions privately.
  • SecretsEncrypted env vars propagated to all regions.
  • Tigris (partner)S3-compatible storage for Fly apps. By partner.
  • Upstash Redis (partner)Managed Redis via Upstash.

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

KindFly.ioSupabase
CLIflyctl CLISupabase CLI
SDKC# SDK, Flutter SDK, JavaScript SDK, Kotlin SDK, Python SDK, Swift SDK
RESTMachines APIManagement API, REST API (PostgREST)
GRAPHQLFly GraphQL APIGraphQL (pg_graphql)
MCPSupabase MCP Server
OTHERFly Postgres (wire)Realtime (WebSocket)
Staxly is an independent catalog of developer platforms. Outbound links to Fly.io and Supabase are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.

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