Bathtimer

Bathtimer is a mobile application that manages shower time using a segmented timer. The program sets time limits for each stage of the showering process. The methodology is based on audible alerts that indicate the transition between phases. The main objective is to reduce excessive water consumption and optimize personal routine.

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• Stage-based timer. The function divides the shower session into discrete intervals. Each interval corresponds to a specific action, such as wetting, soaping, or rinsing. The user defines the duration of each stage according to their needs. The predefined sequence structures the entire process.
• Customizable sound alerts. The system emits an audible signal at the end of each stage. The signal notifies the need to move to the next action. The sound library includes distinct tones for clear identification. The volume of the alerts is adjusted independently from the device's media volume.
• Shower profile configuration. Allows creating and storing multiple shower routines. Each profile contains a unique sequence of stages and their durations. Quick profile selection adapts the timer to different types of showers, such as a quick wash or hair conditioning. Profiles can be edited or deleted at any time.
• Visual timing interface. Displays a graphical representation of the shower's progress. A progress bar indicates the time elapsed and remaining for the current stage. The screen shows the name of the current stage and the next one. The design uses colors for immediate status recognition.
• Usage and consumption statistics. Records the total duration of each shower session. Estimates the approximate volume of water used based on the standard showerhead flow rate. Historical data is displayed in weekly and monthly charts. Tracking allows observing the evolution in consumption reduction.
• Preparation mode. Includes a countdown before the shower starts. The mode allows a defined time for undressing or adjusting the water temperature. The preparation phase prevents the main timer from starting prematurely. The preparation duration is user-configurable.
• Vibration settings. Complements sound alerts with device vibration. This feature is usable in noisy environments or for users with hearing impairments. Vibration intensity can be calibrated. Vibration activation is optional and works simultaneously with sound.
• Screen lock during session. Prevents accidental interruption of the timing. The interface locks automatically when the shower starts, showing only essential information. A long press or a code unlocks the screen to make adjustments. This feature prevents unwanted pauses due to contact with water or steam.
• Wearable integration. The application connects with smartwatches to display notifications. Alerts and progress are replicated on the wearable device's screen. This feature allows leaving the mobile phone in a safe place outside the bathing area. Compatibility is verified with Wear OS and Apple Watch systems.
• Languages and localization. The user interface is translated into several languages, including English. Localization adapts time formats and units of measurement according to the region. Language switching is done from the settings menu. Translation covers all application texts and menu items.
• Cloud synchronization. Saves settings and data history on a secure server. Synchronization allows restoring information when installing the application on a new device. Data is transferred via an encrypted connection. This feature requires an optional user account.
• Offline mode. All main functions operate without needing internet access. The timer works with the precision of the device's internal clock. Data is stored locally and synchronized when a network is detected. This mode guarantees functionality in any location.

The Bathtimer application was conceived in 2020 as a personal project to solve a shower time management problem. Initial development was halted due to technical limitations. Programming resumed in early 2024, culminating in a functional version. The creator is an individual developer who was experimenting with lengthy shower durations. The application was written using the Flutter framework, allowing it to run on iOS and Android systems from a single codebase. The underlying programming language is Dart. The first public version was released in 2024.

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