
Snapchat
Instagram
BeReal
TikTok
WhatsApp
X (Twitter)
NVSTly
Native iOS AI-powered teen social & time-sensitive messaging app. Timer starts on send — not when they open it. Secret Drops, Backroom, Smart Camera to handle messages & switching all media types & AI Remix for prompt-based photo & video remix.

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

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 | locksy.app | certdecoder.com |
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| Platforms | — | |
| Company | Startup from the United States · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Locksy is a native iOS, AI-powered teen social and messaging platform redefining how Gen Z connects, communicates, and creates. Built around a proprietary dual-sided countdown mechanic — the only app in the market where the timer starts the moment content is sent, not when the recipient opens it...
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.
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
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Locksy and Cert Decoder.
Locksy's answer
Locksy was built on a single observation: the foundational mechanic of every major social app — the timer starting when someone opens a message — creates the illusion of urgency without the reality of it. Locksy's founders set out to fix the actual mechanic. By starting the countdown the moment content is sent, running simultaneously for both sides regardless of when the recipient opens the app, Locksy turns every message into a genuinely live, shared event. Built natively in Swift by a powerhouse team headquartered in the heart of Silicon Valley, Locksy launched exclusively in the United States and has since shipped Secret Drops, Backroom ephemeral rooms, the Locksy Smart Camera, and Locksy AI Remix — the first native AI creative layer built directly into a social app's core Drop flow.
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.
Locksy's answer
Locksy is built natively in Swift using Xcode, running exclusively on iOS and leveraging Apple's native frameworks throughout. The platform is engineered for speed — every component of the experience, including Locksy AI Remix, is designed to operate fast enough to keep pace with a live countdown mechanic. Locksy AI Remix supports both photo and video clip transformation through a free-text prompt interface, with no preset filters or templates required. Voice prompt input is also supported, allowing users to describe their transformation by speaking rather than typing.
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
Locksy's answer
Locksy's primary audience is Gen Z teens aged 13 to 18 in the United States. The platform is specifically designed for the generation that has grown up on social media and is actively moving away from public feeds, permanent content, and performative posting toward private, intimate, real-time communication with close friends. Locksy's school discovery system allows users to find and connect with their real-world circle by school, grade, and class, reinforcing its focus on genuine peer connection rather than follower counts or public audiences.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Locksy's answer
Most social apps are built for permanence — feeds, archives, and content that lives forever. Locksy is built for moments. Unlike Snapchat, Instagram, or BeReal, Locksy's timer starts the second content is sent rather than when it is opened, making every message a live, urgent, shared experience rather than a passive notification. Friends don't need the app to receive a Secret Drop. Backroom spaces are themselves ephemeral — the room vanishes, not just the content. And Locksy AI Remix transforms any photo or video clip with a free-text prompt natively inside the Drop flow, with no preset filters or templates. Locksy is free always, available exclusively in the United States, and built natively on iOS.
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.
Locksy's answer
Locksy's primary users are teenagers aged 13 to 18 across the United States, with particular traction among high school students who use the platform to communicate within their existing real-world social circles. The school discovery system allows students to connect by school, grade, and class, meaning Locksy's user base is naturally organized around real institutions rather than algorithmic networks. As a consumer social platform, Locksy does not publish individual user or institutional data.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Locksy's answer
Locksy is the only app where the countdown starts the moment content is sent — not when the recipient opens it. This dual-sided, send-triggered countdown mechanic runs simultaneously for both sender and recipient, creating a live shared event that vanishes forever if not unlocked in time. No other social or messaging app has shipped this mechanic. Combined with a single-tap multimedia switching Smart Camera, private ephemeral Backroom rooms, a dynamic school discovery system, and Locksy AI Remix — a native prompt-based photo and video transformation layer built directly into the Drop flow — Locksy represents a fundamentally different architecture for teen social communication.
Share your experience with using Locksy and Cert Decoder. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


One of the few apps that actually feels thoughtfully designed instead of feature-packed.
Locksy solves a problem every teen feels but nobody had fixed — the moment you send something, the clock should already be ticking for both of you, not just when they decide to open it. That single mechanic changes...
We have no reviews of Cert Decoder yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Tracking Locksy since Jul 2026.
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
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