The best first app is small, useful to you, and finished. Every idea below fits on one screen or two, needs no accounts or servers, and teaches one concept — lists, timers, forms or simple maths — that every bigger app is built from.
Use the Build button to see a working version in seconds, then remix it: change the colours, add a screen, make the text bigger. Reading generated code you can already click around in is the fastest way to learn how apps are put together.
Split a restaurant bill fairly, with a tip slider.
A tip calculator for splitting a restaurant bill: enter the total, choose a tip percentage with a slider, set how many people, and see each person's share update instantly with big friendly numbers.
The classic starter project, done well.
A simple daily to-do list app: add tasks, tick them off with a satisfying animation, filter by all/active/done, show a progress bar for the day, and a "clear completed" button.
Days, hours and minutes until something you care about.
A countdown app for a special event: pick an event name, emoji and date, and show a big live countdown in days, hours, minutes and seconds with a celebratory screen when it reaches zero.
Length, weight, temperature — instant results.
A unit converter app with tabs for length, weight, temperature and volume; type a number in either box and the other updates instantly, with a history of recent conversions.
Work 25 minutes, rest 5 — repeat.
A Pomodoro focus timer: a big circular timer for 25-minute work sessions and 5-minute breaks, start/pause/reset buttons, a count of sessions completed today and a gentle end-of-session chime screen.
Can't decide? Spin the wheel.
A decision-maker app: add a list of options (e.g. what to eat tonight), spin an animated wheel, and get a random winner with confetti; remembers the last few spins.
Eight glasses a day, one tap at a time.
A water intake tracker: tap a big glass button to log a drink, watch an animated bottle fill toward a daily goal, see a seven-day history as a bar chart and adjust the goal in settings.
Front, back, flip, mark known.
A flashcard study app: create cards with a front and back, flip them with a tap, mark each as known or not, and see a progress ring of how many you have learned in the deck.
Group items by aisle, tick them off in the shop.
A grocery shopping list app: add items with a quantity, group them by aisle (produce, dairy, bakery…), tick items off as you shop, and see how many are left with a big remaining count.
Three small habits, every day.
A minimalist habit checklist: set up to five daily habits with an icon each, tick them off today, see a streak count per habit and a monthly grid showing which days were complete.
Write it down before you forget.
A simple notes app with a list of notes on the left and an editor on the right, autosave, search by title, pin favourites to the top and a word count in the corner.
Pick a base colour, get a matching palette.
A colour palette generator: choose a base colour with a picker, see complementary and analogous palettes generated automatically with hex codes, and copy any swatch with one click.