Plunge Tracker is a small, deliberately ساده تایمر و logbook برای cold water immersion. Set a target, start the تایمر, get an audible cue when you reach it, و the session is logged با its duration و water temperature. Everything happens on دستگاه شما. There is بدون حساب کاربری to create, no همگام‌سازی service, no analytics, و بدون تبلیغاتvertising. The برنامه never مخاطبین a server. Features * Countdown تایمر با a target you adjust in 15 second steps * An optional 10 second run-up that counts you in, so you are not already losing time while you climb into the water * Audible chimes, synthesised on the fly rather than shipped as recordings * Optional ambient soundscapes to hold شما attention during a plunge * An option to hold the screen on, so the countdown is still there when you look up * Session history showing duration و water temperature * Export شما whole history to CSV, so شما data is never locked in * Celsius or Fahrenheit, switchable at any time * Light و dark تم‌ها, following شما سیستم setting by default * Built-in cold plunge safety guidance Privacy Sessions are stored in the برنامه's own private storage و never leave the device. The برنامه asks برای no permissions at همه - not even internet access. It cannot reach the network, because it was never granted the ability to. The رابط کاربری is read directly out of the برنامه package, so there is nothing to fetch. You may still see one entry listed, DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION. That one is generated automatically by the AndroidX libraries, is scoped to this برنامه's own package, و can only ever be held by code signed با the same key. It grants no access to شما device or شما data. Safety Cold water immersion carries real risks, شامل cold shock response, impaired swimming ability و hypothermia. This برنامه is a تایمر و a notebook. It is not medical advice و it cannot supervise you. Never plunge alone, ease into the practice gradually, و talk to a doctor first if you have a heart condition, high blood pressure, or are pregnant.