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#privacy

Engineering notes, product decisions and lessons from running our own apps. One or two posts a month, no marketing.

Privacy & Security10 Oct 20263 min read

App Store privacy labels explained: what "Data Not Linked to You" really means

Data used to track you, linked to you, not linked to you, not collected: what the App Store labels and Google Play Data safety actually say — and how our own apps compare.

AI3 min read

LLM support bots that don't embarrass you: a practical checklist

A support bot that invents a refund policy is worse than no bot. Six rules we follow: answer from your own docs, set hard limits, always offer a human, protect user data, test like code and speak the user’s language.

Engineering3 min read

VLESS, Xray, sing-box and Hysteria 2: what powers modern VPN apps

Privacy & Security2 min read

Calls without a phone number: how ID Caller keeps conversations private

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