everSpan.ai

A novel new way to capture points-in-time - Events in Life, History or Business that matter. Not quite a timeline or a calendar - something new. Time travel and instantly reveal *relationships*

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Inspiration

Every calendar shows when something happens, but our brains ask “how does this event relate to everything else?”
While cataloguing life-events (from baby photos to domain‐renewal receipts) we discovered that seeing dates relatively—“Mom was 27 years old when I was born and dad was 32” or “Board meeting is –8 weeks and 3 days ** from launch”—is profoundly more insightful than flipping month grids.
That insight became **everSpan.ai: a living timeline where any row can become “now”, the entire table re-expresses itself, and planning backward is as easy as remembering forward.

Use cases:

  • Personal Timeline - Journal of important life events. When the past stops being fuzzy, the future becomes clearer.
  • Historical Research
  • Investments, Legal, Business - How many critical long term deadlines are out there? How many hit all at once next year? See at a glance. How old is that fund? When was that IPO?

What it does

  • Anchor-Swap: one click turns any event into the viewpoint; every other row updates in natural language .
  • Dual Sticky Bars: “Now” and the current anchor lock top/bottom while you scroll centuries (“time-cylinder”).
  • Rapid Entry: type in 2h design review or 8w before send invites; parses and inserts instantly.
  • Reverse-Plan Mode: time-travel to a future milestone (wedding, hackathon deadline) and create back-cast tasks (-8w, -2d)—perfect lightweight project planning.
  • Supabase Multi-User Backend: Postgres + Row-Level-Security; events are per-row, ready for circles & sharing.

How we built it

Layer Stack & Notes
Frontend Bolt.new r → React + Tailwind; custom hooks for sticky headers & anchor math.
Date Logic Luxon for diffs, chrono-node for NLP parsing; offset_from_anchor column for reverse-plan bookkeeping.
Backend Bolt.new integrated Supabase Auth + Postgres; events table with Row Level Security for a secure foundation for sensitive data and future sharing infrastructure
Deployment Bolt auto-deploy to Netlify ; Supabase hosted DB + Storage.

Challenges we ran into

  • Sticky-Row choreography: keeping two independent sticky bars (now & anchor) stable in a virtual scroll container.
  • Anchor math across time-zones: storing UTC, rendering local, recalculating diffs O(1) on every swap.

Accomplishments that we're proud of

  • Live and usable in < 48 hrs Needs refinements but secure and useful now..

What we learned

  • Supabase RLS gives startup-grade multi-tenant security “for free.”
  • Time-travel data entry unlocks a crossover between journaling and lightweight project management.

What's next for Everspan.ai

Phase Road-map Highlights
v1.1 Circle sharing, sentiment tags, photos and attachment uploads (Supabase Storage).
v2 – AI Layer “30 key events in the history of theRoman Empire” instant import • Freeform entry "2 weeks after I started college"
v3 – Privacy Zero knowledge client side decryption for for and notes/files;
v4 – Revenue Freemium for all→ Premium features: storage, sharing timelines securely .

Everspan.ai is just starting—today it’s a timeline that thinks like you do; tomorrow it’s the temporal knowledge graph that never lets you miss what matters.

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