Fine.dev + Mobile App

Built a mobile app with Fine.dev?
We'll make it production-ready.

Mobile apps live on someone's phone — the most personal device they own. Users expect instant load times, smooth animations, offline support, and zero crashes. AI tools can scaffold a mobile UI fast, but the gap between a working prototype and an app that survives App Store review, handles spotty network connections, and doesn't drain the battery is where most AI-built mobile apps fail.

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Mobile App challenges in Fine.dev apps

Building a mobile app with Fine.dev is a great start — but these challenges need attention before launch.

App Store and Play Store approval

Apple and Google have strict review guidelines covering permissions, privacy policies, content ratings, and technical requirements. AI-generated apps frequently get rejected for missing privacy disclosures, requesting unnecessary permissions, or failing to handle edge cases that reviewers specifically test for.

Offline functionality and network handling

Mobile users lose connectivity constantly — in elevators, on subways, in rural areas. AI tools build apps that assume a constant internet connection. Without offline caching, request queuing, and graceful degradation, your app shows blank screens or crashes when the network drops.

Device fragmentation and screen sizes

Your app needs to work on hundreds of different devices — from small Android phones to large tablets, with notches, punch-holes, and different aspect ratios. AI-generated layouts often break on devices other than the one used during development.

Performance and battery drain

Mobile users notice when an app drains their battery or feels sluggish. Unoptimized rendering, excessive API polling, background processes that never stop, and memory leaks are common in AI-generated mobile code. These issues cause uninstalls faster than missing features.

Push notifications

Setting up push notifications requires server-side infrastructure, device token management, platform-specific configuration (APNs for iOS, FCM for Android), and proper permission handling. AI tools generate a basic notification call but skip the entire delivery pipeline.

Secure local storage

Mobile apps store auth tokens, user preferences, and cached data on-device. AI tools often use insecure storage methods (plain shared preferences or AsyncStorage) instead of encrypted keystores. Anyone with physical access to the device could extract sensitive data.

What we check in your Fine.dev mobile app

App Store compliance — privacy policy, permissions, content guidelines
Network handling — offline mode, retry logic, connection state management
Device compatibility — layout on different screen sizes and OS versions
Performance — rendering speed, memory usage, battery impact
Secure storage — encrypted keystore for tokens and sensitive data
Push notification pipeline — server config, token management, delivery
Authentication — biometric login, secure session persistence
Deep linking — proper URL scheme handling and universal links
Crash reporting — error tracking and analytics integration
Build configuration — release signing, obfuscation, environment management

Common Fine.dev issues we fix

Beyond mobile app-specific issues, these are Fine.dev patterns we commonly fix.

highBugs

Spec interpretation may differ significantly from intent

Fine.dev builds exactly what the specification says, not what you meant. Ambiguous specs lead to technically correct implementations that miss the actual product requirement.

highSecurity

Cross-file changes may miss security implications

When Fine.dev generates features spanning multiple files, security-sensitive changes — new endpoints, auth checks, data access patterns — are spread across the PR without a consolidated security review surface.

mediumTesting

Generated tests may not cover real-world edge cases

Fine.dev writes tests for the happy path and obvious failure cases from the spec. Edge cases not explicitly mentioned — concurrent requests, null inputs, rate limits — are frequently untested.

mediumBugs

Cross-file changes introduce inconsistencies

Large implementations touching many files accumulate subtle inconsistencies — type assumptions that don't hold across modules, different error handling patterns in different files.

Start with a self-serve audit

Get a professional review of your Fine.dev mobile app at a fixed price.

External Security Scan

Black-box review of your public-facing app. No code access needed.

$19
  • OWASP Top 10 vulnerability check
  • SSL/TLS configuration analysis
  • Security header assessment
  • Expert review within 24h
Get Started

Code Audit

In-depth review of your source code for security, quality, and best practices.

$19
  • Security vulnerability analysis
  • Code quality review
  • Dependency audit
  • Architecture review
  • Expert + AI code analysis
Get Started
Best Value

Complete Bundle

Both scans in one package with cross-referenced findings.

$29$38
  • Everything in both products
  • Cross-referenced findings
  • Unified action plan
Get Started

100% credited toward any paid service. Start with an audit, then let us fix what we find.

Frequently asked questions

Can I build a mobile app with Fine.dev?

Fine.dev is a great starting point for a mobile app. It handles the initial scaffolding well, but mobile apps have specific requirements — app store and play store approval and offline functionality and network handling — that need professional attention before launch.

What issues does Fine.dev leave in mobile apps?

Common issues include: spec interpretation may differ significantly from intent, cross-file changes may miss security implications, generated tests may not cover real-world edge cases. For a mobile app specifically, these issues are compounded by the need for app store and play store approval.

How do I make my Fine.dev mobile app production-ready?

Start with our code audit ($19) to get a clear picture of what needs fixing. For most Fine.dev-built mobile apps, the critical path is: security review, then fixing core flow reliability, then deployment. We provide a fixed quote after the audit.

How much does it cost to fix a Fine.dev-built mobile app?

Our code audit is $19 and gives you a complete report of issues. Fixes start at $199 with our Fix & Ship plan. For larger mobile app projects, we provide a custom fixed quote after the audit — no hourly billing.

Get your Fine.dev mobile app production-ready

Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.

Tell Us About Your App