Most health apps ask you to trust that your records are safe in their cloud. Sesqui Health asks something simpler: keep them on your own computer, where they were always meant to be. Here's exactly how that works.
The short version: your complete health record lives in a single file on your own Windows PC. We don't hold a copy. There's no account on our servers with your bloods in it. The only time anything leaves your machine is the moment a scanned document is read — and even then, only that document, only once.
Your records are stored in one database file on your PC. Back it up by copying that file. Move it by moving that file. It's yours in the most literal sense.
We don't run a cloud database of customer health records. There is nothing central to breach, subpoena, sell, or leave running after you cancel.
Reading a scanned PDF needs AI vision, so that single document is sent to the Anthropic API during extraction. The structured result comes back and is saved locally. The document isn't retained as a record on our side.
AI features run on your own Anthropic API key, under Anthropic's data terms — not through us as a middleman. You hold the key; you can see exactly what it's used for.
It's tempting to say “an individual isn't worth a hacker's time.” That's not quite true — individuals are targeted constantly by ransomware that doesn't care whose drive it lands on. So here's the argument that actually holds up:
A single national database holding millions of complete health records is the highest-value target in the country. If it falls, ten million people lose their history at once — and none of them had any say in how it was defended. The concentration is the risk.
A record you hold yourself changes the maths entirely. A breach of your machine costs you your records — serious, but bounded, and defended on your terms with your own backups. It can't cost a nation theirs. You decide where the file lives, whether it's encrypted, who it's shared with, and when it moves. Sovereignty isn't a slogan here — it's the security model.
No. We don't operate a server that stores your records, so there's no place for us to see them. Your database sits on your computer. Support never requires us to hold your data.
Only the scanned document being read, at the moment you choose to extract it — because turning a photo of a pathology report into structured numbers requires AI vision. It runs on your own API key under Anthropic's terms. Your accumulated database of past results is never sent.
Because your record is a single file, backing it up is a copy-paste — to an external drive, or wherever you keep important documents. We recommend keeping the file encrypted and backed up, and the app is designed to make that straightforward.
Nothing happens to your data — it's on your machine, not ours, so it can't be locked away or deleted by us. A licence keeps AI features and updates active; your records remain yours regardless.
Those frameworks govern institutions that custody your data. Sesqui Health deliberately isn't a custodian — you are. It's a personal tool for holding your own records, which is a different model from an institutional health record. We're glad to talk through how it fits your situation.