Who buys this
People planning a trip with three other friends who have wildly different budgets and interests and no shared document.
Where to start in Lovable
Paste this into Lovable as the opening prompt. It sets up one screen and one job, which is easier to grow from.
Build a group trip planner. One person creates a trip with destination and dates, invites others by link, and each invitee fills in their budget range and up to five interests from a fixed list like food, hiking, museums, nightlife. The app generates a day-by-day itinerary that tries to satisfy the overlap in interests and stays inside the lowest budget in the group, then lets everyone vote thumbs up or down on each activity so the plan updates.
What you will need to wire up
- Lovable AI Gateway
- Lovable Cloud (Postgres, realtime votes)
- Магический линк для приглашений
- Places API для проверки адресов
Build order
- Get the invite link flow working before touching the itinerary logic. A trip with only one person who filled in preferences produces a boring, single-interest plan and nobody sees the value. The whole product depends on getting at least two people's answers into the same trip, so build the invite and join flow first and test it with a real link on a phone.
- Anchor every suggestion to a real, checkable place. A model asked cold for a day plan in a city it was not grounded in will invent restaurant names that do not exist. Pull a shortlist of real venues from a places API first, filtered by the group's budget tier, and only let the model arrange and sequence from that shortlist.
- Regenerate only the days that got downvoted. If a thumbs down on one activity rewrites the entire week, the group loses the parts they already liked and stops trusting the votes. Scope regeneration to the single day or slot that was rejected and keep everything else fixed.
- Take a cut through booking affiliate links, not a subscription. Most groups plan one trip every few months, so a recurring subscription fights the natural usage pattern. Route the hotel and activity links through affiliate programs and let the free planning tool earn on the bookings it actually influences.
Where this usually breaks
- Budget ranges that do not overlap at all across the group leave the itinerary generator with no valid plan to produce. Detect the conflict before generating and surface it to the group as a decision they need to make, rather than silently picking the average.
- Opening hours and seasonal closures change after the itinerary is generated and the plan quietly points people at a museum that is shut on Mondays. Cross-check the final schedule against live hours data right before the trip starts, not only at generation time.
How it makes money
- Booking affiliate commission. Matches the infrequent trip cadence and does not require the group to commit to a paid plan upfront.
- One-time fee to unlock the full itinerary PDF. Cheap enough that a group splits it without friction, and it lands right when the plan is finished and everyone is excited.
Build this on Lovable
The prompt above is ready to paste. Open Lovable, drop it in and get a first working version in minutes. Free plan, no card, 5 credits a day.
Try Lovable+10 free creditsAffiliate link. The commission is ours, the price for you is the same.