AI for travel · iPhone & iPad

Your smart
trip companion.

Plan, track expenses, and stay aligned with your group — all in one place. Describe a trip and Butter builds the day-by-day plan, splits the costs, and settles up when you get home.

Free, no in-app purchases English & ภาษาไทย Multi-currency
Butter Agent trip overview screen Butter Agent trips home screen
Butter
Your plan is ready —
3 travelers in sync.
Live FX
₩1,000 → ¥110.4
Updated · Tokyo
AI trip planner Day-by-day itinerary Shared expenses Group settle-up Weather · clocks · FX
What's inside

Everything a group trip needs — nothing it doesn't.

From the first half-baked idea in the group chat to the final receipt at the airport. No spreadsheets, no shared notes app, no "wait, who paid for what?"

Building your plan screen with the Butter mascot
01 — AI trip planner

Describe a trip.
Get a real plan.

Tell Butter where you're going and what you're into. It researches real places across the web, then writes a day-by-day plan in about 20–40 seconds — sources and all.

Searches the web 47 sources found Real places, real hours
Leave the app — it keeps going.
Day-by-day itinerary with flight and activity cards
02 — Day-by-day itinerary

Every day,
beautifully in order.

Flights as boarding-pass cards, hotels, and hour-by-hour activities laid out as a calm timeline — not a spreadsheet. Tap a day, see exactly what's next. Everyone shares the same plan.

Flights & hotels Live "now" marker Shared with the group
Shared expenses screen with category breakdown
03 — Shared expenses

Track spending,
in any currency.

Log who paid and how to split. Butter converts every expense into the group's home currency with live FX, breaks spending down by category, and keeps a running total no one has to chase.

Transport Food Hotel Shopping
Fair splits · live conversion · who paid what.
Settlement screen showing who pays who
04 — Settle up

The fewest
payments possible.

At the end of the trip, Butter nets everything down to the minimum number of transfers — who pays who, exactly how much. Settle in one currency, then record each payment as it's done.

Minimum transfers Settle in one currency Record payments
Trip overview with weather, world clocks and currency converter
05 — Trip overview

The boring-but-vital
stuff, at a glance.

Local weather, a home-vs-destination world clock, and a live currency converter — the context you actually reach for, all on one calm screen the moment you open a trip.

World clocks Weather Currency converter
From idea to airport

Three steps. No spreadsheet.

01

Describe it

Where, roughly when, who's coming, and what kind of trip. Butter drafts a real day-by-day plan in under a minute.

02

Travel together

Add a stop, log an expense, check the weather. Everything stays in sync for the whole group, online or off.

03

Settle up

Back home, Butter nets the costs to the fewest payments. You tap to record each one. Done.

A closer look

See the whole trip.

Available on iPhone & iPad

Travel together.
Leave the spreadsheet home.

Bring your group. Plan, spend, and settle — all in one calm place.

Free · no in-app purchases · English & ภาษาไทย
Butter mascot