It has a recipe important, calorie counter, nutrient tracker, and water tracking for making sure you stay happy and healthy. It also connects with other fitness apps, creating a close-to-complete picture of your health. WhatsApp and Allo are companies with an incentive to gather data on its users , but Signal has no business model and exists just through donations and grants. If the government comes knocking for your information, Signal has absolutely nothing to give them, which is exactly the kind of chat protection you want.