Sauna Dozen Timer

Bring the authentic "12-minute timer" experience to your wrist. In Japanese sauna culture, a specialized 12-minute analog clock (a "Dozen Timer") is the standard for tracking sessions. This app replicates that classic experience while adding practical smartwatch features. [Key Features] * 3 Display Modes: Toggle between "Simple Analog", "Detailed Analog", and "Digital" by pressing the upper-right button. * Vital Data at a Glance: The "Detailed Analog" and "Digital" modes simultaneously display Elapsed Time, Current Time, and Heart Rate. In Detailed Analog mode, data positions automatically shift to avoid being hidden by the clock hands. * Smooth Sweep Movement: Features an 8Hz (125ms) update rate to mimic the smooth, sweeping motion of physical sauna timers. * Vibration Alerts: Notifies you with a vibration once your target time is reached. * Sauna-Optimized UI: Timing starts immediately upon app launch. [Specialized "Sauna-Like" Operations] * "No-Look" Target Adjustment: Instantly adjust or extend your target time even after it has elapsed. Each press of the up/down buttons adds/subtracts time, allowing for sensory operation without visual confirmation in a steamy environment. * Instant Restart (Water Bath Ready): Long-press the UP button anytime to reset and immediately start a "1-minute" countdown. While further adjustments can be made with the up/down buttons, this single action is all you need to prepare for the cold water bath, even in those hurried moments. [Disclaimer] Using a smartwatch in a sauna may void the manufacturer's warranty. The developer assumes no responsibility for any hardware damage, battery degradation, data loss, or other issues resulting from the use of this app. While this app was developed with the thermal resistance of the MIL-SPEC Garmin Instinct series (excluding Crossover) in mind, this does not guarantee safety or functionality. Using this app on non-Instinct devices carries a significantly higher risk of severe hardware failure and screen layout issues. By downloading this app, you agree to use it entirely at your own risk.

■ Version 2.2 Update Details - Added the "Export QR Code" function to the "View Sauna Logs" menu in the settings. - Released a dedicated Android application (APK format) for scanning the exported QR codes, as well as viewing and saving the log data. It can be downloaded from the URL below. * Note: The companion Android application supports Japanese only. https://x.gd/sdtimer ■ Version 2.1 Update Details 1. New Features - Added "ALTER Layout Mode" This mode can be enabled in both Standard Mode and Advance Mode. 2. Visibility Improvements - Enabling ALTER Layout Mode changes the layout of each display mode to make the text and heart rate numbers display much larger than usual. ■ Version 2.0 Update Details 1. New Features - Added "Countdown Digital" Mode A new watch face mode that counts down the remaining time from the target setting. - Added "Temperature Memos" Feature A memory function to store up to 10 independent records each for Sauna temperature (40°C to 150°C, integer) and Water Bath temperature (0.0°C to 40.0°C, to one decimal place). 2. Settings Menu Access Improvements The Settings menu can now be accessed in two ways: - Press the DOWN key when the target timer is set to "0 Min". - Select "Settings" from the exit confirmation menu displayed by pressing the BACK key. 3. Settings Menu Details - Operation Mode In addition to the traditional "Standard Mode", a new "Advance Mode" has been added for smooth set tracking. * Advance Mode Specifications: - Switches sequentially through 3 states (Sauna, Water Bath, and Rest) by pressing the Enter key. - Unlike Standard Mode, only one selected watch face style is applied during Advance Mode. - Display Settings - Standard Mode: Allows you to individually enable or disable the 4 watch face styles (Simple Analog / Normal Analog / Countup Digital / Countdown Digital). - Advance Mode: Automatically selects the currently active watch face style and fixes it as the single layout. - Timer Settings - Allows you to change and save the default target time that is automatically set upon a timer reset (holding the UP key). - In Advance Mode, you can individually configure the default target times for Sauna, Water Bath, and Rest. - View Sauna Logs - Allows you to review up to 50 past records, displaying the start time, target time, and heart rate transition (showing Start to Completion) for each session. - Logs recorded during Advance Mode seamlessly include the specific session type (Sauna, Water Bath, or Rest). - Individual log deletion and a "Delete ALL" option are available directly from the log view screen. 4. Others - Minor feature improvements and bug fixes.