Hydration Hostage is described as 'Locks screen until you’re seen drinking water via local camera, offering multiple modes and streak tracking, working completely offline for privacy' and is a water drinking reminder in the sport & health category. There are more than 25 alternatives to Hydration Hostage for a variety of platforms, including Android, iPhone, Apple Watch, iPad and Android Tablet apps. The best Hydration Hostage alternative is HydroTracker, which is both free and Open Source. Other great apps like Hydration Hostage are Hidroly, Neer, Waterit and Waterllama.