Proof of Concept Vol 1 | Explore, Build, Engage Now

Build roadmap

From concept
to live product.

Every major milestone from the first line of code to today's first live encounter detection — documented here for the record.

✓

✓ Shipped

Database architecture & proximity engine

33+ Supabase/Postgres tables, full Row-Level Security on every table, PostGIS spatial extension enabled. Core encounter detection using ST_DWithin with 75m radius, 15-minute time windows, and ON CONFLICT deduplication. SECURITY DEFINER function entry point.

PostGIS ST_DWithin RLS 33+ tables

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✓ Shipped

Encounter engine — scoring, dwell time & dedup

Materialized encounter_scores table with compute_encounter_score() using formula: min((encounter_count × 2) + recent_bonus, 100). Dwell time filter gates encounters on minimum presence via first_seen_at. 15-minute composite dedup window preventing spam via unique constraint + ON CONFLICT DO NOTHING.

Encounter scoring Dwell filter 15-min dedup Live

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✓ Shipped

Orbit mode — resonance score & streak tracking

Tracks repeated proximity across days. Resonance Score uses log-scale frequency + recency boost + day-streak bonus. Status progression: Emerging → Growing → Strong. Confirmed live: leo showing "Growing · Crossed 3×" and JetSetter1 showing "Emerging · Crossed 2×".

Resonance score Streak bonus Verified live

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✓ Shipped

Frequency mode — interest & intent matching

Frequency Score: shared interests (40pts) + intent match (15pts) + industry match (15pts) + prompt overlap (30pts). Live radar view showing JetSetter1 at 40% match and leo at 32% match with full score breakdowns visible in the UI.

100pt scoring Radar view Scores live

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✓ Shipped

Real-time subscriptions & notification engine

12 live Supabase Realtime subscriptions. Push notifications via VAPID web push. Orbit notifications firing live: "leo has been near you 3 times recently" visible across 24 notification items. Admin dashboard showing live user presence map, encounter feed, and engine triggers.

12 subscriptions VAPID push Firing live

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✓ Shipped

Full product UI — all screens complete

Feed, Paths, Matched Paths, Frequency radar, Heatmap, Notifications, Achievements (badges + leaderboard), Admin dashboard, How it works, Signal panel, Orbit view, Airport Mode, Settings. Passport subscription at $9.99–$14.99/mo with blurred "who liked you" unlock gate.

PWA Capacitor Stripe billing All screens live

🎯

◉ Now — Vol. 2 target

Seed network expansion: 10 real users

Currently running with 3 live users generating real proximity data in Summerville, SC. Next objective: onboard 10 carefully selected seed users across 2 test zones to generate multi-user encounter clusters, validate orbit formation with non-test-account data, and build waitlist social proof ahead of airport beta.

3 → 10 users 2 test zones Orbit validation

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NEXT — Vol. 3

Airport beta — ATL Terminal B

Single-airport beta with seeded user base. Airport Mode already built and activating automatically. Target: 50–100 users through waitlist + organic. Validate encounter density at scale, capture press-ready moment, and build case for JetBlue Ventures distribution conversation.

ATL Terminal B 50–100 users Press hook

Live screenshots — April 18, 2026

Every screen,
working today.

These are unedited screenshots from the live production app, taken during the first real multi-user session.

Main Feed — Airport Mode Dashboard

Crossing Heatmap Geo · Live

Frequency Radar — Score breakdown live Frequency mode

Crossed Paths — Orbit signals Orbit mode

Notifications — 24 orbit alerts Realtime

Matches — Passport gate Monetization

Admin Dashboard — Live presence map Admin

Live pings + encounter log Engine data

Achievements + Travel Badges Gamification

How Tangnt Works — in-app guide Onboarding

Full Dashboard — Mode switcher, signals panel, orbit, "I Saw You" Full UI

Technical validation

The engine
is real.

Not a prototype. Not a mockup. The proximity detection, orbit tracking, and scoring algorithms running in these screenshots are the same code shipping to users.

📍

PostGIS proximity engine

Server-side ST_DWithin spatial query. 75m radius. 15-minute windows. Coordinate jittering for privacy. Runs on every location ping with sub-100ms latency in testing.

ST_DWithin(a.location, b.location, 0.00075)

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Encounter scoring formula

Materialized encounter_scores table. Score formula: min((encounter_count × 2) + recent_bonus, 100). Recomputes on trigger. Feeds orbit status and notification thresholds.

min((count * 2) + recent_bonus, 100)

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Security architecture

SECURITY DEFINER entry point for all encounter writes. Composite unique constraint blocks duplicate inserts. ON CONFLICT DO NOTHING in record_encounter(). RLS on all 33+ tables.

ON CONFLICT DO NOTHING

🪐

Orbit resonance score

Log-scale frequency weighting + recency boost + day-streak multiplier. Status thresholds: Emerging (2+ crossings), Growing (4+), Strong (7+). Cross-day deduplication via date_trunc bucketing.

log(freq) * recency_boost + streak

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Realtime infrastructure

12 active Supabase Realtime subscriptions. VAPID web push notifications. Admin dashboard with live active-user map, encounter feed, and manual engine trigger buttons for each scoring job.

12 realtime channels · VAPID push

💳

Monetization live

Passport subscription at $9.99/mo (base) and $14.99/mo (full). Stripe + webhooks integrated. "Who liked you" blur gate visible in screenshots. Upgrade CTA in sidebar. Revenue layer ready before beta launch.

Stripe · $9.99 / $14.99 per month

It works. We built it.

From conceptto live product.

Every screen,working today.

Seed networkexpansion map.

The engineis real.

Vol. 1 closes here. Vol. 2 starts now.

It works.
We built it.

From concept
to live product.

Every screen,
working today.

Seed network
expansion map.

The engine
is real.

Vol. 1 closes here.
Vol. 2 starts now.