Hydrate Arc is a free, offline-first hydration tracker for the non-Music Garmin Forerunner 165. Log water quickly on your wrist, review today's drinks, and see hydration patterns over weeks, months, and years. Features: • one-tap 150, 250, 330, and 500 ml presets; • a configurable START-button quick-add amount; • exact Undo and deletion of individual current-day entries; • Today, Week, Month, and Year views; • up to 400 daily totals retained locally on the watch; • configurable optional reminder notifications; • a Glance plus protected hydration and quick-add complications for Hydrate Arc Face; • touchscreen and hardware-button navigation; • a one-shot Reset Hydration Data action in Connect IQ settings. Hydration records stay in this Connect IQ app's local watch storage. Hydrate Arc has no account, cloud service, advertising, analytics, payment system, or project-operated server. It does not read or synchronize Garmin's native Hydration data. Daily goals are chosen by the user and are not medical recommendations. Reminder visibility, sound, and vibration follow Garmin device settings and firmware behavior. Hydrate Arc does not promise a custom vibration pattern. For the companion hydration watch face, install Hydrate Arc Face as a separate free Connect IQ product.

Initial release with fast logging, exact Undo and Today deletion, five tracker pages, local history, configurable reminders, Glance support, data reset, and Hydrate Arc Face integration.