Jules vs Devin for mobile apps
Comparing Jules and Devin for building mobile apps. See which tool is better and get expert code review for your AI-built project. From $19.
Mobile App challenges we solve
Common mobile app issues in apps built with Jules or Devin.
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.
Which is better for mobile app?
Jules
Best for development teams using GitHub who want an async AI agent to handle routine issue resolution and implementation tasks in the background.
Jules code reviewDevin
Best for teams with complex, open-ended engineering challenges that benefit from a real-time autonomous agent capable of research and multi-step problem solving.
Devin code reviewStart with a self-serve audit
Get a professional review of your mobile app app, regardless of whether you built it with Jules or Devin.
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
Which is better for mobile apps: Jules or Devin?
Both can build mobile apps, but they have different strengths. Jules best for development teams using github who want an async ai agent to handle routine issue resolution and implementation tasks in the background., while Devin best for teams with complex, open-ended engineering challenges that benefit from a real-time autonomous agent capable of research and multi-step problem solving.. Our code review covers apps built with either tool.
Can you review a mobile app built with Jules or Devin?
Yes. We review mobile apps built with any AI coding tool. Our audit covers the specific mobile app challenges like app store and play store approval and offline functionality and network handling.
What issues should I watch for in mobile apps from AI tools?
Common mobile app issues include app store and play store approval, offline functionality and network handling, device fragmentation and screen sizes. These apply regardless of whether you used Jules or Devin. Our code audit catches all of them.
How do I get my AI-built mobile app production-ready?
Start with our code audit ($19) — it covers mobile app-specific issues regardless of which AI tool you used. We check security, architecture, and deployment readiness, then provide a fixed quote for any fixes needed.
Related resources
Jules vs Devin for Other Use Cases
Building a mobile app with Jules or Devin?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.