Travel apps are fun to prototype because the content is rich — itineraries, maps, packing lists, budgets — and the sample data writes itself. The ideas below cover the whole trip, from planning to the flight home, and each makes a good phone app.
If you are planning a real trip, build the itinerary app and use it.
Mornings, afternoons and evenings.
A trip itinerary app for a five-day city break: a day-by-day timeline with activities, times and locations, a map placeholder drawn in SVG, a "now / next" card and a booking references list.
By trip type, weather and days.
A packing list app: choose trip type, days and expected weather, get a generated list grouped by category, tick items as packed, a "don't forget" section and saved lists for future trips.
Spend by day, in local currency.
A travel budget tracker: a trip budget with daily allowance, log expenses in local currency with automatic conversion at a set rate, a spend-by-day chart and a category breakdown.
Stops, driving times and playlists.
A road trip planner: an ordered list of stops with driving time between them, a total distance summary, a fuel cost estimate, an overnight stays list and a fun "who chooses the music" rotation.
Votes, splits and a shared plan.
A group trip app for six friends: proposed dates with votes, accommodation options with votes and prices, a shared itinerary and a simple expense split summary.
A self-guided tour with stops.
A self-guided walking tour app for a city: numbered stops with a short story each, a map placeholder with a path, distance and time between stops, and audio placeholder buttons.
From passport to boarding gate.
A flight day companion app: a timeline for the day (leave home, check-in, security, gate), a documents checklist, a live countdown to boarding and an arrival plan card.
One memory a day, with mood and photos.
A travel journal app: one entry per day with a title, a mood emoji, photo placeholders and a short story, a trip timeline view and a highlights reel of favourite days.
Quick maths abroad.
A currency helper app: a big converter with a saved rate, common amounts as quick buttons, a tipping guide per country and a "what did I pay in total" running list.
Camping trips, sorted.
A camping trip app: campsites with facilities icons, a booking list, a gear checklist grouped by tent, kitchen and clothing, a fire-safety card and a stargazing forecast placeholder.
Kids-friendly plans and downtime.
A family holiday planner: daily plans with kid-friendly activities, a downtime block each day, a snack and essentials checklist, a "who is in charge of what" list and a memories page.
Twenty phrases with big text.
A travel phrasebook app: twenty essential phrases per category with large text and phonetic pronunciation, a show-to-locals full-screen mode, favourites and a quick numbers screen.