LDR Sync & Communication PWA
First Light
<50ms Real-Time Sync
A private command center for long-distance couples: live timezone/status sync, time-locked morning messages, and one-tap pings, delivered as an installable PWA with native push and no app store required.
[ architecture.snippet / first-light ]
> profiles(timezone, status)
> connections(streak_count)
> capsules(unlocks_at: 6am local)
> realtime.subscribe(connections)
[ GALLERY ]
[ TRANSLATION LAYER ]
// FOR_FOUNDERS
The Business Story
The Challenge
Long-distance couples and friends don't need another generic chat app. They need something that actually closes the distance: knowing what time it is for the other person, feeling connected without constant messaging, and having a small daily ritual that makes the relationship feel present.
My Approach
I built a dedicated command center for two people: a live dashboard showing both people's local time, weather, and status at a glance, a one-tap "thinking of you" ping that shows up instantly on the other person's phone, and a time-locked morning message that only unlocks at 6am their time, turning "good morning" into a daily habit instead of a text you forget to send.
The Result
The app delivers native-feeling push notifications on iOS without needing an App Store listing, keeps both people's screens in sync in under 50 milliseconds, and is built to spread organically: each user can create a new "Space" for every relationship in their life, not just one.
// FOR_ENGINEERS
The Tech Specs
Stack
Engineering highlights
- >Shipped native-feeling iOS push notifications via the Web Push API, with no Apple Developer fees and no App Store review.
- >Standardized all timestamps to UTC and handled timezone math client-side with Intl.DateTimeFormat, keeping the server thin.
- >Subscribed the client directly to Postgres row changes via Supabase Realtime, achieving <50ms status/ping updates without polling.