We engineer around
FlutterFlow's limits.
Most agencies struggle with Firebase rule complexity and custom widget failures. We specialize in fixing what others can't: responsive scaling, Firebase architecture, and production-grade performance.
No upfront cost · Live in 2 weeks · Cancel anytime
Team in North America · 9–5 Mon–Fri
What we do for FlutterFlow apps.
We specialize in fixing the "unfixable": Firebase architecture, custom widgets, and responsive design.
Firebase Security
Architect granular Firestore rules for multi-role access without breaking reads.
Custom Widgets
Build production-grade custom widgets with proper state management and lifecycle handling.
Responsive Scaling
Fix layouts that break across devices with MediaQuery-aware containers and constraints.
App Store Publishing
Full submission lifecycle: Apple Guidelines, Google compliance, and store optimization.
Firestore Optimization
Cut read costs by 80% with pagination, composite indexes, and strategic caching.
Compliance Audit
HIPAA/fintech Split Stack architectures with secure backend routing via Xano.
Code Export
Refactor FlutterFlow-exported Dart code into clean, maintainable production apps.
Ongoing Support
Real humans in California available for bug fixes and feature additions.
Why Rehost, not a freelancer.
There's a reason founders trust us with their FlutterFlow apps.
| Feature | Rehost | Freelancer |
|---|---|---|
| FlutterFlow Community Rank | Verified Expert | Unknown |
| Average Fix Time | 1-3 days | 1-3 weeks |
| Custom Widget Development | Yes (50+ built) | Rarely |
| Firebase Architecture | Specialist | Basic |
| Code Export & Refactor | Full lifecycle | Not offered |
| Post-Launch Support | Included | Extra $$$ |
| Performance Guarantee | Measurable SLA | None |
Three fixes that save most FlutterFlow apps.
Three pillars of every FlutterFlow recovery engagement.
Firebase Architecture
Complex security rules failing? We restructure your Firestore rules, indexes, and Cloud Functions for multi-role access patterns that scale.
Custom Widget Development
We build production-grade custom widgets with proper state management, lifecycle hooks, and responsive containers that work on every screen size.
Responsive Scaling
Your app should look perfect on every device. We fix responsive breakpoints, constraint overflows, and layout rendering issues across iOS, Android, and web.
Outgrown FlutterFlow? We rebuild to scale.
When your FlutterFlow app hits performance ceilings, Firestore cost explosions, or complexity the visual builder can't handle, it's time for a code-first rebuild.
React Native Rebuild
We map your FlutterFlow data model and rebuild the frontend in React Native, preserving user data while unlocking 10x performance and full App Store compliance.
Next.js Web Platform
For web-first products, we migrate to Next.js with server-side rendering, SEO optimization, and unlimited scalability on Vercel or AWS.
Data Migration
Zero data loss. We export your Firestore collections, restructure for the new backend (Xano, Supabase, or custom), and validate every record.
Don't take our word for it
"Firebase rules went from nightmare to bulletproof."
Our FlutterFlow app had security holes everywhere because of auto-generated rules. Rehost rewrote our entire Firestore security layer in 3 days. Zero breaches since.
James Park, Founder @ HealthSync
"Custom widgets that actually work on every device."
We had 4 custom widgets that broke on tablets and small phones. Rehost rebuilt them with proper responsive handling. They've been flawless on 15,000+ devices.
Lena Torres, CTO @ EventPulse
"Cut our Firebase bill by 75%."
We were bleeding money on Firestore reads. Rehost implemented pagination, caching, and index optimization. Our monthly Firebase bill went from $800 to $200.
David Chang, CEO @ ShopLocal
Frequently asked questions
Real questions we answer daily for frustrated FlutterFlow developers.
Why are my Firebase Security Rules so complex in FlutterFlow?
FlutterFlow generates default rules that work for simple apps, but multi-role access (admin vs user vs guest) requires manually layered Firestore rules. We architect granular, role-based security rules that protect sensitive data without breaking your app's read/write flows.
My custom widget breaks on different screen sizes. Why?
FlutterFlow's responsive engine uses breakpoints, but custom widgets bypass the built-in layout system. We fix responsive scaling by implementing MediaQuery-aware containers and proper constraint handling inside custom widget code.
Can I export FlutterFlow code and own it?
Yes. FlutterFlow allows full Dart/Flutter code export on paid plans. However, the exported code is often tightly coupled to FlutterFlow's internal libraries. We refactor exported code into clean, maintainable Flutter or rebuild critical modules in React Native for maximum portability.
How do I handle complex state management in FlutterFlow?
FlutterFlow's built-in state works for simple cases, but complex flows (multi-step forms, real-time collaboration, offline sync) require custom state architecture. We implement Provider, Riverpod, or BLoC patterns inside custom actions to keep your app responsive and predictable.
My FlutterFlow app is slow with lots of Firestore reads. How do I fix it?
Unoptimized queries and missing indexes cause excessive Firestore reads, which also drive up your billing. We implement query pagination, composite indexes, local caching with Hive, and strategic denormalization to cut read costs by 60-80%.
Can I integrate Supabase instead of Firebase?
Absolutely. We've migrated multiple FlutterFlow apps from Firebase to Supabase for better pricing, PostgreSQL power, and Row-Level Security. We handle the full API integration, auth migration, and data transfer.
Is my user data secure in FlutterFlow?
It depends on your Firebase configuration. We audit your Firestore rules, Cloud Functions, and authentication flows to ensure users can only access their own data. For healthcare (HIPAA) or fintech apps, we implement a 'Split Stack' where sensitive data routes through a compliant backend like Xano.
Can you build a marketplace app on FlutterFlow?
Yes. We've built multi-sided marketplace apps on FlutterFlow using advanced Firestore data modeling, Stripe Connect for split payments, and real-time messaging. The key is in the database architecture and payment flow design.
Free guides that fix 90% of FlutterFlow issues.
Deep-dive guides from our certified FlutterFlow engineering team.
Adalo vs FlutterFlow 2026
Honest comparison: features, pricing, performance, and code ownership.
🗄️Supabase Integration Errors
Fix RLS policies, auth migration, real-time listeners, and connection pooling.
⚙️Custom Functions Fix
Async errors, null safety, missing imports, and return type mismatches.
🔐Firebase Auth Fix Guide
Google/Apple sign-in iOS, token refresh, email verification loops.
🔔Push Notifications & Deep Links
FCM setup, APNs, deep link crashes, and cold start handling.
💳Stripe & Apple Pay Setup
Cloud Functions, webhooks, subscriptions, and App Store compliance.
🧠State Management Patterns
App State vs Page State, multi-step forms, real-time updates.
🚀Performance & Cost Optimization
Lazy loading, Firestore cost cutting, app size reduction.