1Byte Systems

Software company

Professional software. No catch.

We design and build email, notes, voice transcription, video editing, everyday Android tools and games — each one fast, polished and on your side. No ads, no tracking, and every word in 21 languages.

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Wherever you work and play

Flagships

The products that define us

Four products that show what we do best. Every screen on this page is a real capture of the app.

1B MailEmail for Windows, Linux and Android

All your email. One app that's actually yours.

Gmail, Outlook.com, Yahoo and any IMAP account in one fast inbox, with real conversations, labels that work everywhere and your setup synced between your computers and your phone — end-to-end encrypted. Your mail goes straight from your provider to you. No ads, no tracking.

  • Every account in one fast inbox
  • Labels and folders that work everywhere
  • Your setup synced, end-to-end encrypted
  • Trackers blocked in every email

AvailableWindows · Linux · Android

Discover 1B MailDownloadEvery feature

1B RecorderVoice recorder with on-device transcription

Every word on record. None of it online.

1B Recorder records, transcribes in 21 languages, tells speakers apart and summarizes what was said — all on your phone. The app has no Internet permission at all, so your voice never leaves the device.

  • No Internet permission
  • 21 languages, no minute limits
  • Speakers and summary
  • Wear OS watch

Coming soonAndroid · Wear OS

Discover 1B RecorderEvery feature

1B NoteEncrypted workspace for Windows and Linux

Pages, databases and teams. Encrypted end to end.

1B Note is a Notion-style workspace: pages built from blocks, databases you can see as a table, a calendar or a timeline, and team spaces you invite people into. Every page is encrypted on your own devices before it syncs, so the server that keeps them in step can't read a word of it.

  • Pages built from blocks
  • Five database views
  • Team spaces
  • Real-time editing

AvailableWindows · Linux

Discover 1B NoteDownload

1B CutEdit & Effects · desktop

One program instead of two. Editing and effects, together.

1B Cut joins video editing and visual effects in a single project and a single engine. Double-click a clip and you are inside its effects, with the edit still around you. Bring the AI you choose — your Claude, your ChatGPT or a local model — and keep everything on your computer.

  • Editing + effects in one program
  • The AI you choose
  • Everything on your computer
  • No credits

Coming soonLinux first, then Windows

Discover 1B Cut

Ecosystem

Apps that work together

Each 1B app is good on its own. Together they save you steps — and what they hand each other stays yours.

  • Recordings become pages

    Send a recording to 1B Note: the transcript, summary and tasks arrive as a page, with a link back to the audio.

    Arriving in the next updates

  • Email and notes, both ways

    Save an email in 1B Note as a page — and send any page by email with 1B Mail.

    Arriving in the next updates

  • Your setup on every device

    1B Mail keeps accounts, labels and sidebar in step between your computers and your phone through your 1Byte Account.

    Available now

Recordings and emails move between apps inside your device, with no server in between. Sync travels end-to-end encrypted: we can't read it.

Games

Five games. Five worlds.

A 3D ring puzzle, an original folding puzzle, hanging sculptures to balance, mahjong with bosses and a zombie shooter on our own 3D engine. No ads, no purchases, and they all play offline.

All games

Promises you can check

Every 1B app and game is built on the same four rules, with no exceptions and no fine print. And the numbers back them up.

  • No ads, ever

    No banners, no interstitials, no “watch a video to continue”. Our games have no in-app purchases either.

  • No tracking

    No analytics, no tracking SDKs, no accounts. What you do in our apps is none of our business.

  • Offline-first

    Your files, documents and progress stay on your device. Most of our apps don't even request Internet access.

  • Every screen

    Designed for phones, tablets and foldables, in light and dark — with layouts that adapt when you unfold.

  • 0ads: no banners, no “watch a video to continue”
  • 0trackers, analytics or tracking SDKs
  • 0in-app purchases in our games
  • 9 of 14Android apps and games don't even have permission to use the Internet
  • 21languages, in every app and on this website

Everything we make

Every app, program and game in one place — where it runs and where it stands today.

Android apps

Windows & Linux

Games

Try them before everyone else

All our apps are in closed testing on Google Play. Testers get every update first — and their feedback shapes what we build next.

  1. 1

    Write to us

    Email us the Google account you use on Google Play and tell us which apps you want to try.

  2. 2

    We add you

    We add you to the tester list — usually within a day.

  3. 3

    Join and install

    Open the test link on your Android device, tap “Become a tester”, then install from Google Play.

Request an invite How testing works

Need something built?

Besides our own products, we build custom Android and web apps and set up AI agent workflows for businesses.

About us