Launch Ready cyber security Checklist for mobile app: Ready for app review in bootstrapped SaaS?.

What "ready" means for a bootstrapped SaaS mobile app

For a mobile app, "ready for app review" does not mean "it works on my phone." It means the app can survive Apple or Google review, pass basic security scrutiny, and not create support chaos the day users install it.

For a bootstrapped SaaS, I would define ready as: no exposed secrets, no broken login paths, no insecure API access, no missing privacy disclosures, no flaky deployment, and no domain or email setup that causes trust issues. If your app can handle 100 test signups, send verification email reliably, keep p95 API latency under 500ms, and show no critical auth bypasses, you are in the right zone.

This checklist is for founders who built fast with Lovable, Bolt, Cursor, React Native, Flutter, or similar tools and now need the product to be safe enough for review and launch. If any of the items below fail, your app is not just "not polished"; it is at risk of rejection, downtime, data exposure, or avoidable support load.

Quick Scorecard

| Check | Pass criteria | Why it matters | What breaks if it fails | | --- | --- | --- | --- | | Auth flow | Login, signup, reset password all work on clean devices | Reviewers test real paths, not demo paths | Rejection, failed onboarding | | Secrets | Zero secrets in client code or repo history | Exposed keys get abused fast | Data leaks, billing abuse | | API access | All sensitive endpoints require auth and authorization | Mobile apps are easy to reverse engineer | Account takeover, data exposure | | TLS and domain | HTTPS only, valid SSL, correct redirects | Reviewers expect secure transport | Trust loss, failed callbacks | | Email deliverability | SPF, DKIM, DMARC all pass | Verification and receipts must land in inboxes | Broken signup and recovery | | Monitoring | Uptime alerts and error tracking active | You need to know before users do | Silent downtime | | Storage rules | Private data is not publicly readable | Misconfigured storage is common in AI-built apps | Leaked customer data | | Rate limits | Abuse controls on login and API endpoints | Mobile apps attract brute force and scraping | Cost spikes and account abuse | | Privacy compliance basics | Privacy policy and data usage disclosures match behavior | App review flags mismatches quickly | Rejection or legal risk | | Release process | Production deploy is repeatable with rollback path | Bootstrapped teams cannot afford fragile releases | Broken updates and long outages |

The Checks I Would Run First

1. I would verify that authentication cannot be bypassed

• Signal: A logged-out user can still fetch user records, billing data, or private content.
• Tool or method: Manual API testing with Postman or curl plus a quick review of route guards and backend middleware.
• Fix path: Lock every sensitive route behind server-side auth checks. Do not trust the mobile client to protect anything.

2. I would search for exposed secrets in the app bundle and repo

• Signal: API keys, Firebase config mistakes, Stripe secrets, private tokens, or service account JSON appear in frontend code or git history.
• Tool or method: Repo scan plus secret scanning tools like GitHub secret scanning or trufflehog.
• Fix path: Rotate any exposed key immediately. Move sensitive values to server-side environment variables and rebuild the app.

3. I would test email delivery from end to end

• Signal: Signup verification emails land in spam or never arrive.
• Tool or method: Check SPF/DKIM/DMARC status with MXToolbox plus live test sends to Gmail and Outlook.
• Fix path: Set SPF to authorize your sender, enable DKIM signing, publish a DMARC policy, then re-test delivery.

4. I would inspect storage permissions for public access

• Signal: User uploads or profile images are accessible without authentication when guessed by URL.
• Tool or method: Direct URL tests against storage buckets or CDN objects.
• Fix path: Make private files private by default. Use signed URLs for protected assets and separate public from private storage.

5. I would confirm HTTPS-only traffic with clean redirects

• Signal: HTTP still serves content directly or redirects are inconsistent across apex domain and subdomains.
• Tool or method: Browser devtools plus curl checks against `http://`, `https://`, `www`, and app subdomains.
• Fix path: Force 301 redirects to canonical HTTPS URLs through Cloudflare or your host. Install valid SSL everywhere.

6. I would check monitoring before launch

• Signal: No uptime alerts exist and you only notice failures from user complaints.
• Tool or method: Verify uptime monitor pings plus error tracking like Sentry on key screens and API routes.
• Fix path: Add health checks for web and API endpoints. Route alerts to email or Slack so failures are visible within minutes.

## Example security headers at the edge
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Content-Security-Policy: default-src 'self'
X-Content-Type-Options: nosniff

Red Flags That Need a Senior Engineer

1. You have direct client-side access to sensitive APIs

• If the mobile app talks straight to privileged endpoints without server-side authorization checks, that is a production risk.

2. You do not know where secrets are stored

• If you cannot say whether keys live in the repo, build system, hosting panel, or device config files, you have a leak waiting to happen.

3. Your auth flow was stitched together by AI code without review

• AI-generated login logic often misses token expiry handling, refresh logic, logout invalidation, and replay protection.

4. Your DNS and email setup are half done

• Missing SPF/DKIM/DMARC breaks trust signals fast. Bad DNS also causes deployment outages that look random to founders but are really configuration failures.

5. You already saw one strange incident

• One unauthorized request success, one leaked admin link, one broken password reset email is enough reason to stop DIYing security fixes.

DIY Fixes You Can Do Today

1. Rotate every key you can find

• Start with Stripe-like billing keys, email provider keys, analytics write keys, cloud credentials.
• If a key was ever committed to git or pasted into a chat tool unprotected by design controls assumed here as unsafe for production use), treat it as compromised.

2. Remove secrets from the mobile client

• The app should never contain private server credentials.
• Anything needed by the client must be public by design only if exposure is acceptable.

3. Turn on MFA everywhere you can

• Protect domain registrar accounts,

Cloudflare, hosting, email, GitHub, Apple Developer, Google Play Console.

• One stolen inbox can become one stolen product.

4. Add basic rate limits

• Limit login attempts,

password resets, OTP requests, signups, webhook retries.

• This reduces brute force attempts and support noise immediately.

5. Test the full review journey on a fresh device

• Use an unlogged-in phone,

new email address, new network if possible.

• Walk through install,

signup, verification, logout, password reset, delete account if applicable.

Where Cyprian Takes Over

If you want this fixed fast instead of piecemeal DIY workarounds , Launch Ready is the sprint I use when a founder needs the app safe enough for review in 48 hours.

Here is how I map failures to deliverables:

| Failure found | Launch Ready deliverable | | --- | --- | | DNS confusion / broken redirects / subdomain issues | Domain setup , DNS cleanup , redirects , subdomain routing | | Insecure transport / weak edge protection | Cloudflare setup , SSL , caching , DDoS protection | | Email not delivering / spam issues | SPF , DKIM , DMARC configuration | | Fragile deploys / wrong environment values / leaked secrets risk | Production deployment , environment variables , secrets handling | | No visibility into outages / errors | Uptime monitoring setup , handover checklist | | Review blockers caused by unstable release process | Deployment hardening plus launch handoff |

My goal in that window is not cosmetic polish; it is removing launch blockers that create failed review cycles , broken onboarding , exposed customer data , downtime , support load , and wasted ad spend.

A typical 48 hour flow looks like this:

• Hour 0-6:

audit DNS , auth , secrets , deployment , email setup , monitoring gaps

• Hour 6-24:

fix domain routing , configure Cloudflare , lock down environment variables , rotate exposed secrets

• Hour 24-36:

verify SSL , caching , DDoS protection , SPF/DKIM/DMARC

• Hour 36-48:

production deploy , smoke tests , handover checklist , rollback notes

If your issue list includes auth bypasses , secret leaks , bad DNS , missing monitoring , or broken email delivery , I would not recommend another round of guesswork. I would fix the launch path first so your app can actually survive review and early users.

References

• roadmap.sh code review best practices: https://roadmap.sh/code-review-best-practices
• roadmap.sh api security best practices: https://roadmap.sh/api-security-best-practices
• roadmap.sh cyber security roadmap: https://roadmap.sh/cyber-security
• Apple App Store Review Guidelines: https://developer.apple.com/app-store/review/guidelines/
• Google Play policy center: https://support.google.com/googleplay/android-developer/topic/9858052

---

Take the next step

If this is a problem in your product right now, here is what to do next:

• [Use the free Cyprian tools](/tools) - estimate cost, score app risk, check launch readiness, or pick the right service sprint.

• [Book a discovery call](/contact) - I will tell you honestly whether you need a sprint or if you can DIY the next step.

*Written by Cyprian Tinashe Aarons - senior full-stack and AI engineer helping founders rescue, launch, automate, and scale AI-built products.*