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Hacker News
6/10

TransitStory Reels

An app that turns a city day into a shareable 3D animated replay of every train, bus, and ferry you took, with stats (CO2 saved, time stuck in traffic vs. transit) and a one-tap social export.

Target user

City residents and travel content creators who like sharing their urban adventures

Features
  • Auto-detected trip timeline reconstructed from your phone's motion and nearby transit signals
  • 3D animated playback of your day overlaid on a stylized city map, with stats and route names
  • Personal stats: transit vs. driving time saved, CO2, money saved, and a streak counter for transit days
  • Vertical-friendly export for TikTok, Reels, and Shorts with auto-captioned route callouts
Why now

The London 3D visualizer proves the format is striking; the gap is packaging it as a personal, shareable story rather than a generic live map.

Signals · overall 6/10
Demand
5/10

Transitly already has a public waitlist for personal transit journey mapping, and the HN 3D London trains post hit 74 points, but neither has proven mass-market pull yet — interest exists but unvalidated at scale.Show HN: Follow London Trains in 3DTransitly - Your Transit Journey, Mapped.

Whitespace
6/10

Transitly is a direct 'personal transit journey' competitor (still pre-launch with waitlist) and Trainlog already lets users create/share routes via OSM; the 3D animated reel + one-tap social export angle is differentiated but the moat is narrow given how close Transitly is.Transitly - Your Transit Journey, Mapped.Trainlog

Monetization
5/10

Transitly advertises a 'PRO' AI tier (freemium model) and Transit Stats CTA is a paid App Store app, showing users will pay for transit stats; however, social-reel-format apps typically monetize weakly unless tied to creators/sponsorship.Transitly - Your Transit Journey, Mapped.Transit Stats - CTA Analytics - App Store

Longevity
7/10

Public transit infrastructure is permanent and carbon/transit awareness is a growing secular trend; daily-activity storytelling (Strava model) has multi-year staying power once network effects build.Our favourite carbon-tracking apps, tools, and plugins (2025 edition)

Feasibility
7/10

TfL/National Rail/GTFS APIs are openly available, deck.gl proves 3D rendering on transit data works in a browser, and competitors (Transitly, Transit Stats) already implement auto ride detection + analytics — the full stack is proven.Show HN: Follow London Trains in 3DTransit Stats - CTA Analytics

Show HN: Follow London Trains in 3D · 74 points · 29 commentsHacker News · 2026-07-08 (16d ago)