
Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.

Streaks
Habitify
Productive.io
Done?
Everyday
Habitica
Strides
Build good habits and quit bad ones in one clean tracker.

Which is more popular?
Based on our record, Cert Decoder seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | certdecoder.com | nowago.app |
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| Company | — | Startup from Spain · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.
NowAgo is a clean habit and quit tracker for iPhone, iPad, and Mac. Create custom trackers for anything you want to build, reduce, or stop: workouts, reading, sleep routines, smoking, scrolling, alcohol, caffeine, study time, creative work, or any personal habit you want to make visible. NowAgo...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Cert Decoder and NowAgo.app.
Cert Decoder's answer
I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.
NowAgo.app's answer:
NowAgo started from the idea that progress is easier to continue when you can actually see it. Many habits are invisible day to day, and many slips feel bigger than they are. NowAgo was built to make routines, streaks, resets, and milestones easier to track without guilt or overcomplication.
Cert Decoder's answer
certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server
NowAgo.app's answer:
Native Apple stack: Swift, SwiftUI, SwiftData, CloudKit/iCloud sync, Widgets, Charts, and StoreKit. NowAgo is built for iPhone, iPad, and Mac.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
NowAgo.app's answer:
NowAgo is for Apple users who want to build better routines, quit unwanted habits, and make progress visible. It is useful for people tracking health habits, productivity routines, personal goals, lifestyle changes, or anything they want to repeat less or more often.
Cert Decoder's answer
Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.
NowAgo.app's answer:
NowAgo is simple, visual, and flexible. It works for building habits like workouts, reading, or studying, but also for quitting or reducing habits like smoking, scrolling, alcohol, or caffeine. It is made for people who want a calm tracker across iPhone, iPad, and Mac without turning self-improvement into a complicated system.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
NowAgo.app's answer:
NowAgo.app's answer:
NowAgo combines habit building and habit quitting in one clean Apple-native tracker. Instead of only rewarding perfect streaks, it helps users see progress, milestones, reset history, and patterns over time, so both good routines and unwanted habits are easier to understand and manage.
Share your experience with using Cert Decoder and NowAgo.app. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago
Tracking NowAgo.app since Jun 2026.