Selfstock - Your life as a stock index, built from Apple Health
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Selfstock turns your steps, sleep and focus from Apple Health into one personal index that starts at 100 and moves every day. Better than your usual day, it goes up. Worse, it goes down.
See every day on an up/down calendar, get a recap every Monday, halt trading on sick days, and compare returns with friends in private groups. Everyone is measured only against their own baseline.
All health data is calculated on your iPhone. No account, no ads, no tracking.
Replies
Hi Product Hunt 👋 I'm Hyde, an econ master's student in Japan researching AI infrastructure, and this is my first iOS app.
I study markets for a living, and I kept wondering: what if my own life had a price chart? Not a score out of 100 or a streak to protect, just a number that moves up on good days and down on bad ones, compared only with my own usual.
How it works:
📈 Steps, sleep and focus from Apple Health become one index that starts at 100
📅 An up/down calendar and a weekly recap every Monday
⏸️ Trading halts for days you're sick or traveling
👥 Private friend groups that compare returns, so someone who walks 5,000 steps can beat someone who walks 15,000
Privacy was a hard rule from day one. Everything is calculated on your iPhone, there's no account, and the leaderboard only shares your ticker and daily % change through your own iCloud.
It's free, in English and Chinese, and also adapted for iPhone Duo.
I'd love your feedback, especially on how the index feels after a week of use. What would make you open it every day?