Infans Infans is a privacy-first baby tracking app with Nostr-based encrypted data storage and parent-to-parent sync. Features: Feeding tracking — bottle (ml/fl oz), breast (L/R/both + duration), solids Sleep tracking — start time + duration Weight & height — kg/lb/oz with optional height (cm/in) Diaper tracking — wet/dirty/both Bath tracking Milestones — first smile, first word, etc. Growth charts — WHO weight-for-age percentile bands (P3/P50/P97) for boys/girls Activity trend charts — daily/weekly/monthly/yearly for all metrics 7-day trend bar charts — feeding and sleep trends on the Summary tab Encrypted backup — all data encrypted with NIP-44 and stored on Nostr relays as kind 30078 events Parent sync — share data with co-parent via NIP-44 encrypted kind 30078 partner-sync events Notes — leave async notes for the other parent (synced inside the same encrypted payload) Offline-first — Room database is the local source of truth; Nostr syncs in the background No telemetry, no analytics, no tracking. Your data stays yours — encrypted on Nostr relays you choose.