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Bytelantic, Inc. / New York City

Digital products for everyday problems.

We're an independent product company based in New York City. We look for the small things that quietly waste people's time or put them at risk, then build the tools that fix them.

See what we've builtGet in touch

What we do

We build the software we wish existed.

Bytelantic is an independent product company. We're not an agency, and we don't take client work. We pick problems that are small enough to solve properly and annoying enough to be worth solving, then we design, build, and run the result ourselves.

Products

The Saferlayer wordmark and padlock logo

Saferlayer

Live

Saferlayer

Sooner or later, someone asks you for a photo of your passport or driver's license. Saferlayer stamps that copy with a watermark built to resist removal, so it can't be quietly reused to open an account in your name.

Hard to remove, even with AI
Today’s AI tools erase an ordinary watermark without leaving a trace. Saferlayer layers several techniques together to make that far harder.
Nothing leaves your device
Every file is processed inside your own browser. There’s no upload, no server, and no copy of your document for anyone to lose.
Hide what nobody needs
Cover the fields a recipient has no reason to see, like your document number or date of birth, before you send anything.
Keeps working offline
Install it once and it runs with no connection at all, which is also the simplest proof that your files aren’t going anywhere.
  • Free to use. Pro adds PDF support and batch processing.
Open Saferlayer
The Singlenote logo, a crumpled ball of paper with a face

Singlenote

Coming soon

Singlenote

Most people end up texting themselves just to find a confirmation number an hour later. Singlenote gives you exactly one note, one tap away, with nothing to navigate and nothing to search.

Exactly one note
No accounts, no folders, no list to scroll past. Tap the icon and the thing you keep needing to check is already on screen.
Opens without a connection
It works on a plane, in a parking garage, and on festival Wi-Fi that has given up. Your note is never waiting on a network.
Never touches a server
Your note lives on your device and nowhere else. There is no account to breach and no cloud copy to leak.
Built for one-handed moments
Keep the screen awake while your hands are busy, and lock the note so a stray touch can’t change a word of it.
  • Free. Coming soon to iOS and Android.
Visit singlenote.app

Contact

Questions? Found a bug?

Email us and one of the people who built it will answer. There's no support queue and no ticket number.

[email protected]All the ways to reach us