ChatGPT or a trip planning app?

What a general assistant is good for

Open-ended research. Questions like which of these four cities suits a group with a EUR 400 budget, or what is the trade-off between Naxos and Paros, are exactly what a conversational model handles well.

Comparison and reasoning. Weighing options against stated constraints, explaining why one route is better than another, and pointing out things you had not considered.

First drafts. Turning a blank page into a structured seven day outline in thirty seconds.

Rewriting. Reworking a plan when the group changes the dates, drops a person, or halves the budget.

What it is not for

Holding the plan. A chat thread is not a document. It scrolls, it cannot be edited in place, there is no single current version, and nobody else can change it.

Sharing with a group. Copying an AI response into a group chat produces a plan that is immediately out of date, that six people then reply to individually, and that nobody can find three days later.

Live information. Availability, prices, opening hours, and whether the ferry runs in October all change and are exactly where general assistants are least reliable unless they are actively searching and citing.

Anything transactional. Booking, paying, splitting costs, and tracking who owes what.

• A chat thread has no current version, only a history
• Nobody else can edit your conversation
• Plans copied into group chat are stale immediately
• Bookings and money need a real record, not a message

What a planning app is for

Persistence. The plan exists in one place, has one current state, and can be opened on the morning of day three without scrolling through anything.

Collaboration. Several people can see and change the same plan, and everyone sees the same version. For a group of six this is the entire point.

Structure. Days, times, locations, and bookings held in a form that can be reordered, filtered, and displayed on a map, rather than as prose.

The transactional layer. Confirmation numbers, who has paid, what is still outstanding, and what everyone owes at the end.

The practical combination

Use the assistant for the thinking phase: shortlisting destinations, weighing trade-offs, understanding a place, and generating a draft structure.

Move the output into the app the moment it stops changing shape. That is usually once the destination and dates are fixed.

Then use the assistant again for specific questions during the trip, and keep the app as the record of what is actually happening.

The mistake is doing the whole thing in chat and then trying to run a six person trip from a scroll of messages.

Where both fail and you need to verify

Opening hours and seasonal closures. Check the venue own site or a maps listing.

Ferry and train schedules, particularly outside high season.

Whether a restaurant takes a group of eight, which is almost never findable without asking directly.

Prices, which move constantly and which both AI output and stale app content get wrong.

The verification pass takes twenty minutes for a week-long trip and it is the highest-value twenty minutes in the whole planning process.

• Opening days, particularly Mondays and Tuesdays for museums
• Seasonal transport, especially island ferries
• Group capacity at restaurants, always ask directly
• Current prices for anything ticketed

A working process

Ask the assistant to compare three destinations against your group constraints. Pick one, or put the shortlist to a group vote.

Ask it for a draft day structure with your real constraints stated. Verify times and prices.

Put the verified draft into whatever the group will actually open on the trip, with the bookings attached.

Keep the assistant open during the trip for the ad hoc questions, where it is genuinely useful and where nothing needs to persist.