ROUND 36 · MAIN fc4bce3 · iOS & iPadOS 18+
Nothing on this map is guessed.
Just-Go plans metro journeys across 53 Chinese cities. Every field it shows carries the source it came from — bundled with the app, saved on your device, or fetched from the operator just now. The fields it has no source for stay empty.
- Catalog
- 58 cities
- Routed
- 53 networks
- Station packs
- 14 cities
- Position on line
- Dongdan — Tiananmen EastBundled
- Track geometry
- Real alignment, 1.8 km to XidanBundled
- Exits
- A · B · C · DStation pack
- First and last train
- 05:05 · 23:00Station pack
- Next arrivals
- 2 min · 6 minOperator · live
- Operator notice
- Saved copy, 4 hours oldOn this device
- Step-free transfer route
- Not availableNo source
- Indoor walking path
- Not availableNo source
The rule
Missing data should look missing — not plausible.
Just-Go combines bundled network graphs, Apple Maps place search and walking legs, reviewed station packs, and narrowly scoped operator requests. Every layer keeps its own label, so a link never masquerades as offline content and a cached result never masquerades as live.
- Bundled
- 53 city graphs and track geometry. Ships with the app. No request is needed to read the network.
- Station pack
- 14 cities, 2,849 matched records. Only fields that exist are claimed. Coverage is counted field by field.
- Operator · live
- Five reviewed sources, 1,598 station references. Fetched by your device when you ask. Just-Go re-hosts nothing.
- On this device
- Backup-excluded, clearable in Settings. A saved answer shows its age and never poses as live.
- No source
- Left empty on purpose. No invented indoor paths, no guessed transfers, no filler.
Round 36 · six changes
Built for the
journey itself.
PR #21 makes the everyday experience faster, more personal, and clearer about data.
- RoutingMap-first routing
- Plan across 53 metro networks, start from any searched place, and see walking, cycling, driving, and rail legs as distinct parts of one journey.
- Quick TagsUnlimited Quick Tags
- Keep one Home and one Work, then add as many custom tags as you need — for stations or arbitrary map places — and manage them from Settings.
- OfflineOfficial data, cached locally
- Beijing’s last good operator response can work offline from a backup-excluded device cache, visibly labeled with its saved time.
- CacheClear Cache means clear
- One confirmed action removes downloaded city packs, station-information snapshots, URL caches, memory copies, and in-flight downloads — without deleting tags, trips, or settings.
- APIOne station-information contract
- A developer-facing schema, directory, and source registry describe 1,598 stations across five official sources. It is a contract, not a hosted proxy.
- DataUniversal city data
- Every catalog city now has a versioned, integrity-indexed JSON document for developers, while the app bundles only the data it actually uses.
Coverage · 58 cities
58 cities.
Clear boundaries.
Coverage is not uniform, so the site draws it the way the app reports it. Each square below is one catalog city.
- Station pack
- Routed, plus reviewed station records — 2,849 of them.
- Routed only
- A full metro graph you can plan on. No station records yet.
- Catalogued
- In the universal data format, not yet routable in the app.
- Official source recipes
- 5
- Station references
- 1,598
- Reviewed links
- 770
- Invented transfer paths
- 0
Read the details
Every feature.
Every boundary.
Read the product guide, API contract, privacy policy, terms, and complete attribution record.