Building a saas app with Kotlin? Let us review it.
Expert code review for saas apps built with Kotlin. We fix Kotlin-specific security gaps, optimize performance, and handle deployment. From $19.
Common Kotlin issues we find
Real problems from Kotlin codebases we've reviewed.
Coroutine scope mismanagement
Launching coroutines with GlobalScope or unstructured scopes that outlive their intended lifecycle, causing memory leaks and zombie operations.
Null safety bypasses with !!
Using the non-null assertion operator (!!) to force past null checks instead of safe calls (?.) or elvis operator (?:), causing NullPointerExceptions.
Missing lifecycle awareness
Android components that don't respect Activity/Fragment lifecycle, continuing operations after destruction and causing crashes or memory leaks.
Insecure SharedPreferences
Storing authentication tokens and sensitive data in plain SharedPreferences instead of EncryptedSharedPreferences or Android Keystore.
SaaS App challenges to solve
Key saas app concerns that AI-generated code often misses.
Subscription billing complexity
AI tools generate basic Stripe checkout but miss webhook handling, failed payment recovery, plan upgrades/downgrades, proration, and subscription lifecycle management. Your billing needs to be bulletproof — incorrect charges destroy trust instantly.
Multi-tenant data isolation
Every user's data must be completely isolated. AI-generated code often stores data without proper user scoping, meaning one customer could potentially see another's data. This is a deal-breaker for any business customer.
Authentication and authorization
SaaS needs more than login/signup. You need team management, role-based access control, API key management, SSO for enterprise customers, and secure session handling. AI tools handle basic auth but rarely implement authorization properly.
Uptime and reliability
Paying customers expect your app to work. You need error tracking, monitoring, graceful degradation, database backups, and an incident response plan. AI-generated apps crash ungracefully and have no observability.
What we check
Key areas we review for Kotlin saas app projects.
Stripe integration — webhooks, subscription lifecycle, failed payment handling
Data isolation — can one user access another's data?
Authentication flows — signup, login, password reset, session management
Authorization — role-based access, team permissions
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Start with a self-serve audit
Get a professional review of your Kotlin saas app project at a fixed price.
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
Can you review a saas app built with Kotlin?
Yes. We regularly audit Kotlin saas app projects and understand the specific patterns and pitfalls of this combination. Our review covers security, performance, and deployment readiness.
What issues do you find in Kotlin saas apps?
Common issues include coroutine scope mismanagement and null safety bypasses with !! on the Kotlin side, combined with saas app-specific concerns like subscription billing complexity and multi-tenant data isolation. We check for all of these and more.
How do I make my Kotlin saas app production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For Kotlin saas app projects, the typical path is: fix security gaps, address saas app-specific requirements, optimize Kotlin performance, then configure deployment. We provide a fixed quote after the audit.
How long does it take to audit a Kotlin saas app?
Our code audit delivers a full report within 24 hours. For Kotlin saas app projects, we check security, architecture, performance, and deployment readiness across all Kotlin-specific patterns. Fixes are scoped separately with a fixed quote.
Related resources
Kotlin by Use Case
Need help with your Kotlin saas app?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.