# Sym Junk

> Set up your rebreather from the surface

Canonical page: [https://chrome-stats.com/d/com.divejunk.symjunk](https://chrome-stats.com/d/com.divejunk.symjunk)

## Overview

- **ID:** `com.divejunk.symjunk`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Qusax
- **Category:** SPORTS
- **Downloads:** 29
- **Version:** 1.5.2
- **Last updated:** 2026-09-03
- **First published:** 2026-07-30
- **Publisher country:** NL
- **Size:** 49 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.divejunk.symjunk)
- **Website:** [https://www.divejunk.com](https://www.divejunk.com/)
- **Privacy policy:** [https://divejunk.com/symjunk/privacy](https://divejunk.com/symjunk/privacy)

## Description

SymJunk is a fast, offline-first companion for configuring your CCR dive<br>computer and rebreather head over Bluetooth — so you set everything up calmly on<br>the surface instead of squinting at tiny buttons on the unit.<br><br>CONFIGURE EVERYTHING, OFFLINE<br>• Edit screens, gases, gradient factors, setpoints, deco and more — all on your<br>  phone, no connection needed.<br>• Save presets per category and pick them with one tap.<br>• Three colour themes; metric or imperial.<br><br>ONE-TAP FLEET SYNC<br>• Mark your handset, HUD and CCR head, then push your settings to all of them in<br>  a single sync — with a clear before/after overview of exactly what changed.<br>• The clock and time zone are set correctly on every device.<br><br>DIVE LOGS &amp; MAP<br>• Download your dives and view depth, temperature, pO₂ and tank-pressure<br>  profiles.<br>• See your dives on a map. Add your own dive-site name and location to any dive<br>  — with type-ahead so your favourite sites autofill.<br>• Dive-site totals, ranked by number of dives.<br><br>OFFLINE MAPS<br>• Download a dive area for offline use, so the map works with no signal.<br><br>REBREATHER TOOLS<br>• Live CCR-head monitor: cells, setpoint, tank pressures, battery health and<br>  more.<br>• Vacuum/positive test with an adjustable timer and live loop Δp.<br>• Calibration guide that follows the head live.<br>• Step-by-step assembly and calibration checklists.<br><br>WAYPOINT PLANNING<br>• Plan waypoints on a map and upload them to your computer.<br><br>PRIVACY BY DESIGN<br>• No account, no ads, no tracking. Your data stays on your phone. The only<br>  internet use is map tiles and place-name search.<br><br>SymJunk is an independent hobby app and is NOT affiliated with, or endorsed by,<br>Halcyon or Oxygen Scientific. All brand and product names belong to their<br>respective owners. This is experimental software and not a dive-safety device —<br>always verify every setting on the dive computer itself and rely on your training<br>and certified equipment.<br><br>Free to use, with an optional one-time Pro upgrade for fleet sync, waypoint<br>upload and the live head monitor.

## Rankings

- #2,497,775 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.BLUETOOTH_CONNECT`
- `android.permission.BLUETOOTH_SCAN`
- `android.permission.CAMERA`
- `android.permission.INTERNET`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.divejunk.symjunk.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.divejunk.symjunk)