Deploy your Flutter app to Fly.io
Step-by-step deployment help for Flutter apps on Fly.io. We fix Flutter-specific deployment issues, configure Fly.io, and get your app live. From $19.
Flutter issues we fix before deploying
Common Flutter problems that affect Fly.io deployments.
API keys embedded in Dart source code
Secret keys and API credentials hardcoded in Dart files. Since Flutter web apps compile to JavaScript, these keys are visible to anyone who opens browser dev tools.
Inconsistent state management patterns
AI tools mix setState, Provider, Riverpod, and BLoC in the same project. This makes the app confusing to maintain and introduces subtle state synchronization bugs.
Large initial download size for web
Flutter web apps ship a large main.dart.js file by default. Without deferred loading and tree-shaking, the initial page load can take several seconds on slower connections.
No input validation before API calls
Form data sent to backend APIs without client-side validation, leading to poor user experience (errors only appear after a network round trip) and unnecessary server load.
Fly.io deployment issues we check for
Common Fly.io problems that break Flutter apps in production.
Dockerfile missing or misconfigured
Fly.io requires a Dockerfile for deployment. AI tools that scaffold without one force flyctl to auto-generate a suboptimal Dockerfile that misses build steps.
Volume only available in a single region
Fly volumes are pinned to one region. Multi-region deployments try to access a volume that doesn't exist in other regions, causing crashes.
Machine restarts losing in-memory state
AI-generated apps store session data or caches in memory. Fly machines can restart or migrate, wiping all in-memory state without warning.
Internal DNS resolution failing between services
Services within a Fly organization communicate via <app>.internal hostnames, but AI-generated code hardcodes localhost or public URLs.
Start with a self-serve audit
Get a professional review of your Flutter project before deploying to Fly.io.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
How it works
Tell us about your app
Share your project details and what you need help with.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
How do I deploy a Flutter app to Fly.io?
We handle Flutter deployments to Fly.io end to end. Start with our code audit ($19) to identify deployment blockers specific to your Flutter project, then we configure Fly.io, fix issues, and get your app live in production.
What Flutter issues affect Fly.io deployments?
Flutter projects commonly have api keys embedded in dart source code and inconsistent state management patterns. On Fly.io, these combine with dockerfile missing or misconfigured and volume only available in a single region to cause deployment failures.
Can SpringCode deploy my Flutter project to Fly.io?
Yes. We specialize in deploying Flutter applications to Fly.io. We audit your codebase for Flutter-specific issues, configure Fly.io correctly, and handle the full deployment so your app runs reliably in production.
What does Flutter deployment to Fly.io cost?
Our code audit ($19) identifies all Fly.io deployment blockers in your Flutter project. Full deployment assistance is scoped with a fixed quote after the audit — no hourly billing or surprise charges.
Related resources
Other techs on Fly.io
Deploy Flutter elsewhere
Need help deploying Flutter to Fly.io?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.