Tempo

Tempo is an app first: a healthspan score built from your labs, wearables, food and habits, and a plan that turns one goal into daily actions. What puts it here is the iMessage side, which its own llms.txt calls a health companion in iMessage: you send a photo of a meal, it estimates it, saves it and keeps the day's targets in view, and it texts you when a pattern moves, a week of fewer steps against shorter sleep, with one action to take. It is filed under coaching with Bo, the other health agent here, and the difference between them is what each connects to: Bo reads your calendar and inbox as well as your wearables; Tempo reads your body and nothing else.

The way in is a link on its /hello page that opens Messages to a published number with the first message typed. That link is written with an ampersand where the question mark belongs, the same fault Jarvie and Flip publish, so on an iPhone it opens Messages addressed to nobody; the number and the message are recorded here as they appear and the link is not.

Its privacy policy is short and is about the app: wearable data with permission, revocable in device settings, no precise location, no sale of personal information, deletion on request. It says nothing about training, names no model provider, and says nothing about the iMessage thread at all. Its llms.txt says your data stays on your device, which is a statement about the app rather than about a photo sent to a phone number.