Kios – An iOS e-reader app with kobo, kosync and OPDS support
Self-hosted ebook sync on iOS with Kobo and KOReader protocol support.

Curated protocol library with falsifiable hypotheses beats generic habit trackers.
Biohackers and quantified-self enthusiasts
Exist · Bearable · Gyroscope
I am looking for enthusiastic people who want to see longevity and bio-hacker community grow.
At the moment the app is completely free to use. There is no sign up or anything like that. I need your feedback to build something beautiful.
Self-hosted ebook sync on iOS with Kobo and KOReader protocol support.
Five-gate validation framework prevents skill knowledge drift, but experiments limited to one domain.
Correlates mood against Screen Time and HealthKit data automatically on device.
Apple Health AI advisor with BYOK—no subscription, your key, your data.
Aggregates Stripe and PostHog on iOS, though read-only dashboards lack actionability.
Free native workout diary with iCloud sync, but Strava and Hevy already dominate.