Zello Vermilion unofficial build

An UNBANNABLE production · Zello Vermilion · Build 159

Zello Vermilion.

Zello's discovery tools died and a decade of channels scattered. Vermilion is the unofficial fix: Discover, Trending, 33 voices with privacy modes, a soundboard and audio companion for your next transmission, and the fastest talk button ever built for Zello. Stock Zello 7.12.1 under the hood. Fully open and free — no PIN, no license, no paywall. The app the community actually wanted, on top.

Support & community
Support email: zello@goatmail.uk
Telegram group: t.me/+h6kzFXl-3hs4Nzhh
Channel owners: need a channel removed from Trending or Discover? Email us and we'll take it down.
Support the build · Bitcoin
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Working now Build 159 Trending live Open & free
Animated eye used inside the triangular push-to-talk control
Zello logo Vermilion · unofficial build
01 · What it is

The Zello the community remembers.

Vermilion installs beside the stock app on the same phone. Same accounts, same channels, same service — with the tools Zello removed, rebuilt on top.

Straight talk: Vermilion is an unofficial build. It's not made by Zello, not approved by Zello, and it's not part of Zello's terms. It changes the consumer client only — it does not touch Zello Work or Zello's paid services. Beyond that, welcome back.
02 · The essentials

What's inside.

Everything ships unlocked — no PIN, no license, no paywall. The operator guide covers every tool in detail. Here's the short version.

Discover & Trending

The community catalog, back from the dead.

1,000+ channels with search, filters and bulk join — plus Check names to test a spelling before you add it, and a live Trending list built from recent activity. Counts only: no senders, no content, no audio data ever leaves your phone for it. The same lists are online at the Explore page.

Soundboard

A library of sounds, ready for your next transmission.

Import MP3, PCM WAV, Ogg Vorbis or Ogg Opus. Six built-in tones, named pads, favorites, and prepared queues up to sixteen clips. Arm, pause, seek, stop — the queue follows real transmission and leaves your live mic running when it ends.

Audio companion

Your recording, alongside your voice.

The dedicated AUDIO button plays a saved recording mixed with your live microphone, on independent levels. It follows real transmission — waiting pauses the clip, reacquisition resumes with rewind. Hear the result in History.

Background PTT

Keep your music going.

Ordinary PTT and playback no longer pause your music or video apps. An armed session survives Home and the lock screen, and the Active PTT notification shows Transmitting, Connecting or Waiting — with a Stop action. Phone calls still interrupt.

Voices

33 voices on the talk button.

Privacy modes reshape your voice's signature — on-device and free. Robots, characters, radio and tape textures, plus Velvet Smooth. Ten extra effects, per-voice tuning, up to 20 saved variations, and Voice Marquee to shuffle them live.

ZTool

The fastest mic grab ever built for Zello.

It listens for Zello's own floor-open signal and hits talk in under a millisecond. Tested 7-0 against the old ZTool in contested reopenings.

Live Log

Open tools, clearer state.

Live Log, searchable tools, Sessions & Evidence, and Status & Settings — four clear destinations for what the app saw. Everything opens directly. No PIN, no license.

Theme picker

Accent, darkness, your own art.

Your background, your button, your colors. Animated GIFs welcome. No rebuild, ever.

Small tools

FAKE · Picture burst · INVITE ALL · Save audio · Multicast

A gallery pic that says "from camera." A picture that repeats on a bounded schedule. One tap, every eligible contact. Keep that one transmission. Record once and fan out.

03 · What's new

The open-tools line.

The rolling record starts at Build 135, when the PIN and license requirements came off and the tools opened directly. Everything since, newest first — the full log lives on the Changes page.

Build 159 — Screen protection

Screen protection starts automatically after two minutes of input inactivity — or instantly from the three-dot menu. Adjustable dimming, band strength and movement speed under Theme → Screen protection; a held touch prevents activation. Foreground only, and designed to reduce static bright exposure.

Build 158 — Animation efficiency

Leaner ZTool animation and animated Talk artwork — fewer repeated lookups and redundant redraws per frame. Movement, actions, timing and your chosen animation stay the same.

Build 157 — Support & credits

Rolling build identity in Support: Build 157 · 7.12.1 beneath Vermilion. Built By Dan, with tester credits for B L A D E, SUDO, Mr. Grey, Sleepy, JerzyTrash and JayBee. Third-party acknowledgments join the original notices, and the Lab help entry opens the technical operator guide.

Build 156 — Menus & Support

The automatic Quick Start popup is removed. The main menu uses Developer again; Options adds the Online trending list and the Technical operator guide; Support gets a cleaner layout.

Build 155 — Background efficiency

Discover pauses recurring list filtering while another screen is open or Lab is in the background; visible Discover updates resume automatically.

Build 154 — Soundboard & recordings

MP3, PCM WAV, Ogg Vorbis and Ogg Opus imports; six built-in tones, named pads and favorites; prepared queues up to sixteen clips; recording metadata and History exports.

Build 151 — Media & background PTT

Continuous external playback during ordinary PTT; armed sessions survive Home and the lock screen; an Active PTT notification with a Stop action.

Build 150 — Audio companion

A dedicated AUDIO button beside VOICE; saved Ogg Opus playback mixed with the live mic; Arm, Pause, Stop and seek controls; History replay.

Build 149 — Velvet Smooth

A formant-aware voice with 40 ms buffering joins the chooser — the library now holds 33 voices, with every earlier preset kept.

Build 148 — Voice Marquee

Shuffle selected voices while tone and effects move between settings; hold a sound, or stop to restore your starting settings.

Build 147 — Voice tuning

Tone, Dynamics and Character pages for each voice — pitch offsets, EQ, compressor timing, de-essing and drive — plus up to 20 saved variations.

Build 145 — Voices & effects

32 bundled voices and ten extra effects, with a local Original/Processed preview and processing measurements.

Build 143 — Check names

Paste candidate spellings to look up availability and channel type without adding, joining or connecting anything.

Build 136 — Live Log

Four clear destinations: Live Log, searchable Tools, Sessions & Evidence, and Status & Settings, with session search and bookmarks.

Build 135 — Open access

The PIN and license requirements came off; the tools open directly. Everything in Vermilion is now free for everyone.

04 · Go deeper

Everything, in plain language.

The technical operator guide, the live channel lists, and the record of every release.

Operator guide

The technical reference.

All 32 sections for Build 159 on the 7.12.1 Lab line: controls, prerequisites, procedures, evidence and troubleshooting. Search sections locally, browse on mobile, or print a copy.

Explore online

Trending, in any browser.

The web Explore page mirrors the app's Trending and Discover lists with one-tap join links — see what's hot before you even install.

Changelog

Every release, in plain text.

What changed in each build, newest first. No jargon, no fluff.

Download

Rolling releases.

Every build lives in one folder, newest on top. Install over your current version — same package, same signer, your settings survive.

Current build 159 — SHA-256 0dfa6287d1a25fe52ef17da91b0778da022adddc54d76c6f1b504858bbe78d94. Verify before you install; if the checksum doesn't match, delete the file.