Periplus¶

Your whole trip, offline, in your pocket.

A trip planner you install to your phone, then fork to make the trip your own.

Works offline
Installs like an app
One file, no backend

What is Periplus?

A mariner's log, rebuilt for signal dead zones¶

A periplus was the log of ports along a voyage. This one is a web app: open it once on signal and the whole itinerary keeps working where the coverage drops.

Built for the road

Everything you need, with no bars¶

Works offline¶

Open it once and the whole trip is cached. Airplane mode, mountain passes, dead zones: it still loads.

Installs like an app¶

Add it to your Home Screen on iOS or Android: its own icon, full screen, no browser bar.

Tap to navigate¶

Every spot has a Directions link that opens Google or Apple Maps, whichever you picked.

Add to calendar¶

Every event opens in Google Calendar or saves to Apple Calendar, made on your phone.

Fork it

Make the trip yours, no code¶

Edit in the browser¶

Tap Edit and change any text; add, reorder or remove spots, weeks and checklists.

Export it¶

Export copies the whole trip as JSON, on your device.

Drop it in your fork¶

Paste it over the TRIP block in your fork, commit, and your trip deploys.

How to customize it

See it live¶

The demo is a real 8-week research residency in North Carolina: food, hikes, beaches and a week-by-week plan.

Open the planner