Fly.io vs Shuttle
A detailed comparison to help you choose between Fly.io and Shuttle.
Quick Verdict
4.0/5
Fly.io
0 reviews
3.4/5
Shuttle
0 reviews
Fly.io is rated higher (4.0 vs 3.4). Fly.io runs Docker containers on bare metal in 35+ cities globally. Machines run close to users — sub-50ms latency from most locations. Supports any language and framework. Shuttle deploys Rust backend services with zero configuration — annotate your code with macros and Shuttle handles the infrastructure. No YAML, no Terraform. Pay-per-use serverless Rust.
Fly.io Deploy apps globally with sub-50ms latency | Shuttle Deploy Rust backends from your code — no config | |
|---|---|---|
| Overview | ||
| Rating | 4.0 (0 reviews)✓ | 3.4 (0 reviews) |
| Pricing model | usage-based | freemium |
| Starting price | From $2.19/mo | Free tier available✓ |
| Best for | Latency-sensitive applications — APIs, real-time apps and globally distributed backends — run by teams comfortable with a CLI-first platform and pay-as-you-go pricing | Rust developers — solo or small teams — who want a backend live in minutes from annotated code and can accept a London-only region and no contractual uptime guarantee. |
| Specifications (entry plan) | ||
| CPU cores | 1 vCPU✓ | 0 vCPU |
| RAM | 0 GB | 1 GB✓ |
| Storage | 0 GB | 1 GB✓ |
| Bandwidth | 0 TB/mo | — |
| SLA uptime | 99.9% | — |
| Data-center count | 17✓ | 1 |
| €/vCPU/mo | €2.19 | — |
| €/GB RAM/mo | — | €0.00 |
| Features | ||
| IPv6 | ✓ | |
| DDoS protection | ✓ | |
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ✓ | |
| Free tier | ||
| Data-center locations | ||
| Regions | Netherlands, Sweden, France, Germany, UK, US, Canada, Brazil, South Africa, Japan, Singapore, Australia | AWS eu-west-2 (London) |
| Tags | ||
| Tags | free tiermanaged optionipv6eu datacenterus datacenterapac datacenterapi accessprivate networking | free tieropen sourceus datacenter |
| Visit Fly.io → | Visit Shuttle → | |
Fly.io
Pros
- + Fully published pricing for every billed resource, with worked example bills
- + Cheap always-on compute — $2.19/30 days for the smallest Machine in the cheapest regions
- + 17 regions on Fly's own hardware with Anycast routing and per-second billing
- + Strong ecosystem: Managed Postgres, Fly Kubernetes, Tigris S3-compatible object storage, Upstash extensions on one invoice
- + Concrete Enterprise SLA terms (99.9%, 15-minute urgent response) published openly
Cons
- - Free tier replaced by a tight trial (2 VM hours or 7 days)
- - Managed Postgres starts at $38/month — services are priced like a managed PaaS, not like the VMs
- - CLI-first workflow with real conceptual overhead (Machines, Apps, fly-replay, 6PN networking)
- - Uptime SLA only covers Enterprise plans; SLA downtime definition excludes hacking and virus attacks
- - Region count has shrunk from the widely quoted 35+ to 17, and prices vary by region
Shuttle
Pros
- + Infrastructure from code annotations: databases, secrets and static assets provisioned from function signatures, no YAML or Terraform
- + Real free tier (0.25 vCPU, 0.5 GB RAM, 0.5 GB database, 100 build minutes/month) with custom domain support
- + Published, itemized usage rates ($0.12/GB storage, $0.025/build minute, $0.10/GB egress) instead of sales-quoted pricing
- + Clear isolation tiering: spot instances on free, reserved VM-isolated instances from Pro
- + First-class Rust framework support (Axum, Actix Web, Rocket, Serenity) and open-source platform code
Cons
- - Rust only — other language stacks are not supported today
- - Single AWS region (London, eu-west-2) with no region choice below the not-yet-available Enterprise tier
- - No published uptime SLA on any current tier; support is Discord-based with 1-business-day response on Pro
- - Steep jump from $20/mo Pro to $250/mo Growth, with metered usage on top of every paid tier
- - Tier contents have changed materially over time (projects and included egress were cut in 2025)
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