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Sylphx vs Fly.io

Global container deployment vs. full-stack SaaS platform

Fly.io is loved by developers for its fast global deployments and low-level control over machine sizing and regions. But it's infrastructure — you still wire up every application service yourself. Sylphx delivers the same deployment power with 18 additional managed services built in.

Feature comparison

Side-by-side look at what each platform includes out of the box.

Feature
Sylphx
Fly.io
Hosting
Global deployment (30+ regions)
Sylphx via Deploy service
GitHub integration
Docker / container support
Data
Managed Postgres
Fly Postgres is self-managed
Object storage
Key-value store
Backend
Auth & user management
SaaS
Billing & subscriptions
Analytics & events
Email (transactional + newsletters)
Feature flags
AI
AI Gateway (200+ models)
DX
TypeScript SDK (unified)
Pricing
Scale-to-zero (idle cost = $0)
Fly machines keep running unless stopped
Ops
Self-host option
Included Partial / add-on Not available

Key differences

Managed services vs. DIY infrastructure

Fly.io gives you VMs in 30+ regions — fast, flexible, developer-friendly. But you still need to add auth (Clerk?), billing (Stripe?), a database (Neon? Turso?), analytics, and more. Sylphx bundles 19 services so you ship product features instead of integrating tools.

Global deployment — both do it well

Fly.io pioneered affordable global deployment with Anycast networking and hardware-isolated VMs. Sylphx's Deploy service matches this for application workloads. The difference: Sylphx services (database, KV, search) are also globally distributed by default.

Developer experience

Fly.io requires learning flyctl, Dockerfiles, and machine configuration. Sylphx's `npx create-sylphx-app` bootstraps a full-stack project with every service pre-configured. No infra expertise required.

Pricing model

Fly.io is pure usage-based (VM hours, bandwidth, storage) — predictable for compute but you pay for idle machines. Sylphx charges per-service usage (API calls, storage, events) with zero cost when idle. Scale to zero automatically.

Start free with Sylphx today

18 services. One SDK. No credit card required. Ship your next project faster.