Features

Every detail tuned for simplicity and privacy.

Zerolog isn't just a pretty UI — every screen and interaction is built around "collect less, do the right thing."

01 · Features

Internet-free Messaging — Bluetooth & Local Network

When there's no signal, Bluetooth Low Energy and the local network take over; the device next to you stays in reach. Chat and games keep going with no internet. Whichever channel is used, no message is stored on our servers.

  • Bluetooth Low Energy (BLE) — close range
  • Wi-Fi / local network (mDNS) discovery
  • Internet and close range always run in parallel
  • Works in airplane mode with Bluetooth on
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02 · Features

On the Internet: End-to-End Encrypted Messaging

On Wi-Fi or mobile data, Zerolog opens an end-to-end encrypted (E2EE) channel in parallel. Keys are generated on your device, never leave for a server. Message content can be decrypted only on the two devices — no one, including us, can read it.

  • End-to-end encryption — even we can't read it
  • Keys generated on device, never shared
  • Message content not stored on a server
  • The same ephemeral (TTL) rules apply remotely
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03 · Features

Ephemeral (Self-Destructing) Messages

Each chat gets a lifetime: burn on read, seconds, minutes, hours, or wipe-on-session-end. When the timer runs out, the message is gone from both devices. No undo — because there was no save.

  • Per-chat lifetime (TTL)
  • Burn-on-read or wipe on session end
  • Full wipe on app close
  • Content never on disk — RAM only
Overview →
04 · Features

Peer-to-Peer Voice Calls

Zerolog offers encrypted peer-to-peer voice calls. Audio flows directly between the two devices and rings with a native call UI on the lock screen. Call history is not kept.

  • Peer-to-peer (P2P) audio — no server in the middle
  • iOS CallKit / Android native call UI
  • Call content is not recorded
  • Requires an internet connection
Overview →
05 · Features

Pairing with Mutual Approval

Every new pair requires the recipient's approval. The request shows up on their screen — accept or decline. Silent messaging is impossible.

  • Pair request is shown explicitly
  • Channel doesn't open until accepted
  • Pair via QR, PIN, or nearby discovery
  • Verify the channel with a safety code
Overview →
06 · Features

Block and Report

Block anyone who bothers you in one tap; when you block, the chat is wiped from both devices. Report abuse with categories and track its status.

  • One-tap block — chat wiped instantly
  • Blocked list with unblock
  • Spam, harassment, abuse, fake account, other categories
  • Report status tracking (Open, Reviewing, Actioned)
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07 · Features

Username and Minimal Profile

You pick a unique username (@username) and a display name. The phone number is used only at first launch for OTP verification; it isn't stored long-term and isn't shown on your profile.

  • Unique @username — profanity filter, 5 changes/month
  • Display name (real-name format); @username shown beneath it
  • Phone for one-time verification only, never shared
  • Avatar auto-generated or picked from gallery
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08 · Features

Media and File Sharing

Send photos, videos, stickers, and files. Over the internet, content is end-to-end encrypted and follows the same ephemeral rules. You can control forwarding/export per chat.

  • Photos and videos (compressed before sending)
  • Lottie-based animated stickers
  • File sharing (over internet, encrypted)
  • Per-chat forwarding and export control
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09 · Features

Panic Wipe

One tap closes every active chat, clears every in-memory message, cancels every timer. For when seconds matter.

  • Closes all sessions instantly
  • Clears all in-memory messages
  • Cancels all timers
  • Auto-wipe on app close
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10 · Features

13 Local Multiplayer Games

13 games over the same pair: Tic Tac Toe, Rock Paper Scissors, Backgammon, Chess, Penalty Kicks, Basketball Hoops, Okey, Battleship, Snake Duel, Reaction Tap Duel, Connect Four, Memory Match, Tetris Duel.

  • All on the same link, no internet
  • Most have a vs-AI solo mode
  • Smooth, native (Flame) game engine
  • Instant matchmaking
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11 · Features

Permissions, Only What's Necessary

Zerolog asks for only what it truly needs: Bluetooth, local network, notifications, optional camera (QR), and the microphone for voice calls. Location, calendar, and contacts are never requested.

  • Bluetooth — nearby pairing and transport
  • Local network — nearby discovery (mDNS)
  • Notifications — pair requests and calls
  • Camera (QR) and microphone (calls) only when needed
Overview →