"Someone should make an app for that" — this page is that list. These are small, specific gaps people mention again and again: things that feel obvious but nobody has done well because they are too niche for a big company and too fiddly for a weekend. Which makes them perfect for a prototype.
If one of these already exists in your country, the prototype is still a great way to test a better version.
What to cook from what's about to expire.
A leftovers app: log food with expiry dates, get a daily "use it up" list ranked by urgency, simple recipe suggestions for combinations, and a chart of food waste avoided this month.
Borrow a drill from three doors down.
A street tool-lending app: neighbours list tools they will lend with photos placeholders, request to borrow with dates, a borrowed/lent dashboard and gentle return reminders.
What you gave, what they loved.
A gift-tracking app: people with their sizes, likes and dislikes, a history of gifts given with a reaction rating, upcoming occasions and an ideas list per person.
Where did I park, and when does the meter end?
A parking helper app: one big "I parked here" button that records level, spot and a note, a meter countdown with alerts, a photo placeholder and a history of past spots.
Every warranty date in one place.
A warranty tracker: add purchases with store, date, warranty length and receipt photo placeholder, see what is still covered, expiring soon alerts and a claim checklist per item.
Fair rotation, no arguments.
A chores rotation app for a shared house: chores with frequency, an automatically rotating weekly assignment grid, done buttons, a fairness score per person and a swap request feature.
Multiple people, multiple pills, one view.
A medication schedule app for a family carer: profiles for two people, medications with times and doses, a today timeline with big "given" buttons, missed-dose alerts and a printable weekly chart.
Menus filtered by your allergens.
An allergy-safe dining app: set your allergens, browse restaurants and menus with dishes marked safe, unsure or avoid, a card to show staff in their language, and saved safe places.
Trade cuttings and get care reminders.
A houseplant app: your plants with watering and feeding schedules, reminders, a "cuttings to swap" board with local listings and a plant health check quiz.
Make time for things you love.
A hobby time-budget app: set weekly hours for hobbies, log sessions, see a fun balance chart between hobbies and chores, and a nudge screen when a hobby is being neglected.
Reunite lost items after a festival.
A lost-and-found app for events: report lost or found items with category and description, a matching screen that suggests likely pairs, a collection point map placeholder and status updates.
One photo a day, huge buttons, no feed.
A family photo app designed for grandparents with very large text and buttons: one new photo a day from family with a big caption, a heart button, voice-note placeholder replies and a simple calendar of past photos.