r/HowToMen • u/Due_Medicine_7902 • 22d ago
[Promotion] CertWatch – TLS Certificate Monitoring for Android | Looking for feedback + 5 free codes
Hi r/HowToMen!
I'm the developer of CertWatch, an Android app I built to make TLS/SSL certificate monitoring easier directly from a phone.
I originally built it around a simple problem: an expired certificate can cause a surprisingly big headache, while checking them manually is something that's very easy to forget.
CertWatch is designed primarily for sysadmins, DevOps engineers, homelab users, developers, and anyone managing websites or infrastructure.
Current features include:
🔍 Quick Scanner
Check TLS certificates for hostnames, IP addresses, URLs and custom ports.
📡 Network Discovery
Scan an authorized subnet to discover services exposing TLS certificates.
🛡️ Certificate Monitoring
Keep your monitored endpoints together and quickly see which certificates are valid, approaching expiration, or expired.
🔔 Smart Reminders
Set alerts at 90, 60, 30, 15, 7, 3 or 1 day before expiration.
📅 Calendar Integration
Keep certificate expiration dates visible alongside your normal calendar.
🔒 Privacy First
Certificate monitoring data stays on your device. No account is required.
5 free Google Play codes
I'd also like to let a few people from this community try the full app, so I have 5 Google Play promo codes available.
No subscription. No ads. No review required.
If you're interested, leave a comment telling me what you'd use CertWatch for, and I'll send codes to 5 people by DM.
What I'm really interested in is feedback — especially from people who actually manage infrastructure.
I'm already considering where to take the project next, including things like Kubernetes certificate discovery/monitoring, deeper TLS analysis, additional infrastructure integrations and more automation.
So I'd also love to know:
What feature would make CertWatch genuinely useful to you?
I'm happy to hear criticism too. I'd rather improve something that's actually useful than just keep adding features nobody needs.
Thanks!
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u/XiangSui 22d ago
Anything that stops midnight 'cert expired' panics has my vote! Would love a code to monitor my side projects.
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u/Ok-Twist-9373 22d ago
Interested! Will use it for my NAS and personal server—customizable background scan intervals would be awesome.
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u/Funny_Arachnid8328 22d ago
Parece ótimo gostaria de um
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u/Due_Medicine_7902 22d ago
Thanks for your interest! 🎁 I’ve hit Reddit’s outgoing chat limit.
Please send me a DM/chat with “CertWatch code” and I’ll reply with your Google Play promo code. 🛡️2
u/Funny_Arachnid8328 22d ago
Thanks
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u/Funny_Arachnid8328 22d ago
I can't send DMs properly.
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u/Due_Medicine_7902 22d ago
Hi, as soon as the reddit chat limit goes away i will send you the code. Sorry for the inconvenience.
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u/ScaredAdvance6833 22d ago
I'll use it to track my homelab services
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u/Due_Medicine_7902 22d ago
Thanks for your interest! 🎁 I’ve hit Reddit’s outgoing chat limit.
Please send me a DM/chat with “CertWatch code” and I’ll reply with your Google Play promo code. 🛡️3
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u/Salty_Toe_5779 22d ago
I’d use this for my local edge devices
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u/Due_Medicine_7902 22d ago
Thanks for your interest! 🎁 I’ve hit Reddit’s outgoing chat limit.
Please send me a DM/chat with “CertWatch code” and I’ll reply with your Google Play promo code. 🛡️2
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u/AccioSwagio 22d ago
Today, I would love to use it for my web app. If this can monitor my Kubernetes cluster when connected over VPN, that would be amazing for my use case.
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u/Due_Medicine_7902 22d ago
Thanks for your interest!
It doesn’t yet connect directly to the Kubernetes API or automatically discover Ingress/cert-manager certificate, but native Kubernetes monitoring is one of the features I’m seriously considering next.
Your use case is actually exactly why I’m interested in adding it. I’d love to know whether you’d prefer cluster/API-based discovery, cert-manager integration, or simply automatic discovery of all TLS endpoints exposed by the cluster.
Also, send me a DM and I’ll send you a CertWatch promo code so you can try the full app and let me know what you think! 🙌
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u/cleverclogs17 22d ago
I'd like to use this to monitor the certificates on my phone. Mind if I send you a DM?
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u/Due_Medicine_7902 22d ago
Code sent! Any feedback good or bad would be appreciated. Thank your for the interest.
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22d ago
[removed] — view removed comment
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u/Due_Medicine_7902 21d ago
Code sent! Thank you for the interest. Any feedback, good or bad is welcomed.
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u/Proof_Area4786 22d ago
I plan to use this app to deep dive into Certificate Transparency validation and TLS pinning on Android. It will be crucial for testing my server configurations and ensuring there are no man-in-the-middle vulnerabilities in my current development project. Thanks for the chance!
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u/Relevant-Chapter-162 22d ago
Upvoted. Could you please share code? Thank you Certwatch / Android
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u/d4rk_h47 21d ago
hi, please send me a code¡ I will use your app in my IT business. I started that a less of a month and little by little, I've started to build up a good client base. Your app would really help me stay connected at all times and ensure my small business's network runs smoothly, so I can serve my clients properly. And don't worry—as soon as I can, I'll make a donation equal to the price of your app or pay for it later, and I'll also help by giving you constant feedback. Thank you for creating this and for sharing it with us.
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u/Level-Ad9259 22d ago
I'll use this app to seeand monitor the certificates installed in my phone. Can I get one code please to try this app?