90 App Ideas, Each With a Prompt That Builds It

Can't choose?

Websites

Barber shop booking page

Website ideas

A page for a person, a business or a day.

  • Barber shop booking page

    Inside
    • Services with prices
    • Opening hours and a map
    • A booking form that saves requests

    You'll meetFormsLayoutDatabase

  • SaaS landing page

    Inside
    • One clear call to action
    • Pricing tiers with a monthly and yearly toggle
    • An FAQ that expands

    You'll meetLayoutStateForms

  • Wedding website

    Inside
    • Ceremony and party schedule
    • A map to the venue
    • RSVP with guest count and dietary notes

    You'll meetFormsMapsDatabase

  • Restaurant site with a menu

    Inside
    • Menu by course, with allergens
    • Hours that show if the kitchen is open
    • A reservation form

    You'll meetLayoutFormsDatabase

  • Personal portfolio

    Inside
    • A project grid with a page each
    • An about page with a photo
    • A contact form that stores messages

    You'll meetRoutingLayoutForms

  • Event page

    Inside
    • Agenda with times and rooms
    • Speaker cards
    • Signup with a live count of seats left

    You'll meetLayoutFormsDatabase

  • Online resume

    Inside
    • Experience, education, skills
    • A print-ready layout
    • A PDF download

    You'll meetLayoutFile export

  • Nonprofit page with volunteer signup

    Inside
    • A mission section with photos
    • Events with dates and places
    • A volunteer form that saves signups

    You'll meetLayoutFormsDatabase

  • Photography portfolio

    Inside
    • Albums with a photo grid inside
    • A viewer with keyboard and swipe
    • An inquiry form for shoots

    You'll meetRoutingStateForms

  • Coming soon page

    Inside
    • A countdown to launch day
    • An email signup that saves
    • Your logo and one line

    You'll meetTimersFormsDatabase

  • Gym website

    Inside
    • A weekly class timetable
    • Trainer profiles
    • A trial signup that saves

    You'll meetLayoutFormsDatabase

  • Property listing page

    Inside
    • A gallery with a full-screen viewer
    • Price, rooms and size at a glance
    • A map and a viewing request form

    You'll meetLayoutMapsForms

  • Podcast website

    Inside
    • An episode list with notes
    • A player that keeps playing as you browse
    • Subscribe buttons per platform

    You'll meetAudioRoutingLayout

  • Recipe blog

    Inside
    • Recipes by category
    • Search by name or ingredient
    • A print-friendly recipe page

    You'll meetRoutingSearchLayout

Simple app ideas: tools and utilities

One job, done well.

  • Guitar tuner

    Inside
    • A live needle, sharp or flat
    • A button per string
    • A reference tone

    You'll meetAudioState

  • Invoice generator

    Inside
    • Line items with quantity, rate and tax
    • Your details saved for next time
    • A clean PDF

    You'll meetFormsFile exportSaved progress

  • Pomodoro timer

    Inside
    • Work and break lengths you set
    • A sound when a session ends
    • Sessions counted per day

    You'll meetTimersAudioSaved progress

  • Unit converter

    Inside
    • A tab per kind of unit
    • Converts as you type, both ways
    • Live currency rates from a public API

    You'll meetStateAPI calls

  • QR code maker

    Inside
    • A code that updates as you type
    • Foreground and background colors
    • PNG or SVG download

    You'll meetCanvasFile export

  • Word counter

    Inside
    • Counts on every keystroke
    • Reading and speaking time
    • The most used words

    You'll meetStateLayout

  • Bill splitter

    Inside
    • Tip presets
    • Uneven splits when someone had more
    • A link that shows everyone their share

    You'll meetStateFormsRouting

  • Password generator

    Inside
    • Length, symbols, numbers, case
    • A strength meter that explains itself
    • Copy in one tap

    You'll meetStateForms

  • Color palette picker

    Inside
    • Complementary and analogous palettes
    • A contrast check for text
    • Export as CSS variables

    You'll meetStateCanvasFile export

  • Countdown to a date

    Inside
    • Ticks in real time
    • Your title and background
    • A share link

    You'll meetTimersRoutingLayout

  • Markdown notes

    Inside
    • A live preview beside the editor
    • Notes saved between visits
    • Export to HTML

    You'll meetStateSaved progressFile export

  • Image resizer

    Inside
    • Drag in an image
    • Width presets and a quality slider
    • Download the result

    You'll meetCanvasFile exportState

  • Loan calculator

    Inside
    • Monthly payment as you type
    • Interest against principal over time
    • A chart of the balance

    You'll meetStateCharts

  • Meeting time planner

    Inside
    • Add cities or time zones
    • A row per zone, aligned
    • Working hours shaded

    You'll meetStateLayout

  • Random team picker

    Inside
    • Paste or type names
    • Pick the number of groups
    • A spin before the reveal

    You'll meetStateLayout

Fun app ideas: games

Scores, saved progress, bragging rights.

  • Trivia quiz with a leaderboard

    Inside
    • A timer per question
    • Faster answers score more
    • A leaderboard of top scores

    You'll meetStateTimersDatabase

  • Snake

    Inside
    • Arrow keys, or swipes on a phone
    • Speed rises as the snake grows
    • A saved high score

    You'll meetCanvasTimersSaved progress

  • Memory card matching

    Inside
    • Small, medium and large boards
    • Moves and a timer
    • A best time per board

    You'll meetStateTimersSaved progress

  • Daily word game

    Inside
    • The same word for everyone each day
    • Colored tiles for right letter, right place
    • A spoiler-free result grid

    You'll meetStateSaved progressLayout

  • Typing speed test

    Inside
    • Random passages
    • Live speed and accuracy
    • A chart of your last runs

    You'll meetStateTimersCharts

  • Clicker game

    Inside
    • A big button and a growing number
    • Upgrades that earn while you are away
    • Progress saved between visits

    You'll meetStateTimersSaved progress

  • Tic-tac-toe vs the computer

    Inside
    • A computer opponent, three levels
    • A win, loss and draw tally
    • Two players on one screen

    You'll meetStateLayout

  • Sliding number puzzle

    Inside
    • Arrow keys and swipes
    • Smooth tile animation
    • A best score and undo

    You'll meetStateSaved progressLayout

  • Hangman

    Inside
    • Categories: animals, movies, countries
    • An on-screen keyboard for phones
    • A drawing that grows line by line

    You'll meetStateCanvas

  • Flag quiz

    Inside
    • Flags from a public countries API
    • A streak and a best streak
    • A continent filter

    You'll meetAPI callsStateSaved progress

  • Minesweeper

    Inside
    • Three board sizes
    • Flags on right click or long press
    • A best time per size

    You'll meetStateTimersSaved progress

  • Reaction time game

    Inside
    • Wait for green, then tap
    • Your time per round
    • Your average and your best

    You'll meetTimersStateSaved progress

  • Sudoku

    Inside
    • A new puzzle per difficulty
    • Pencil notes in a cell
    • Mistakes counted, hints available

    You'll meetStateSaved progressLayout

  • Whack a mole

    Inside
    • A grid of holes
    • Speed that rises with the score
    • A high score

    You'll meetTimersStateSaved progress

  • Mental math sprint

    Inside
    • Add, subtract, multiply, divide
    • A one minute round
    • A best score per operation

    You'll meetTimersStateSaved progress

Micro SaaS and business app ideas

Bookings, orders, quotes, waitlists.

  • Coffee shop order-ahead

    Inside
    • A menu with sizes and add-ons
    • A pickup time and a name
    • An orders page for the counter

    You'll meetDatabaseFormsState

  • Yoga studio bookings

    Inside
    • A weekly schedule with teachers
    • A cap on spots per class
    • Sign-in so members see their bookings

    You'll meetDatabaseSign-inForms

  • Waitlist with referrals

    Inside
    • Signup with a position in line
    • A referral link that moves you up
    • A simple admin view

    You'll meetFormsDatabaseRouting

  • Bakery preorders

    Inside
    • A menu that changes each week
    • Orders that close on a cutoff day
    • A bake list that totals every item

    You'll meetDatabaseFormsState

  • Boutique hotel site

    Inside
    • A page per room with a gallery
    • A booking request with dates and guests
    • A map and nearby places

    You'll meetRoutingFormsMaps

  • Tutoring site

    Inside
    • Subjects with a rate and a level
    • A request form with preferred times
    • Requests you can mark as booked

    You'll meetFormsDatabaseLayout

  • Cleaning quote calculator

    Inside
    • A quote that updates as you pick
    • A discount for weekly
    • A request form that saves the quote

    You'll meetStateFormsDatabase

  • Testimonial collector

    Inside
    • A review form with stars
    • Approve or hide, behind sign-in
    • A public wall of the approved

    You'll meetDatabaseSign-inForms

  • Dog walking bookings

    Inside
    • A dog profile with notes and a photo
    • Walks with a length and a time
    • A weekly calendar

    You'll meetDatabaseSign-inForms

  • Product catalog

    Inside
    • Products with photos and prices
    • Filter and search
    • An inquiry form per product

    You'll meetDatabaseSearchForms

  • Appointment scheduler

    Inside
    • Your hours, your slot length
    • Clients see only free slots
    • A confirmation email

    You'll meetDatabaseFormsEmail

  • Car wash bookings

    Inside
    • Packages with prices
    • Time slots per day
    • Bookings listed for the day

    You'll meetFormsDatabaseState

  • Freelancer packages page

    Inside
    • Packages with what is included
    • A past work gallery
    • A quote request that saves

    You'll meetLayoutFormsDatabase

  • Small shop inventory

    Inside
    • Products with stock counts
    • A low stock warning
    • A restock list to print

    You'll meetDatabaseStateNotifications

Web app ideas: trackers and dashboards

Log it, chart it, watch the line.

  • Habit tracker

    Inside
    • A grid of habits by day
    • Streaks that reset when you miss
    • A weekly chart

    You'll meetStateChartsSaved progress

  • Expense tracker

    Inside
    • Quick entry: amount, category, note
    • A monthly chart by category
    • A budget with a warning

    You'll meetFormsChartsDatabase

  • Live scoreboard

    Inside
    • Scores from a sports API
    • Standings with points and form
    • A favorite team pinned on top

    You'll meetAPI callsStateLayout

  • Workout log

    Inside
    • Exercises, sets, reps, weight
    • A chart per exercise
    • Sign-in so it follows you

    You'll meetDatabaseSign-inCharts

  • Reading log

    Inside
    • Books with a cover and a rating
    • A yearly goal and progress bar
    • Covers from a public books API

    You'll meetDatabaseAPI callsForms

  • Team task board

    Inside
    • To do, doing, done
    • Overdue tasks highlighted
    • Sign-in per teammate

    You'll meetDatabaseSign-inDrag and drop

  • Job application tracker

    Inside
    • A board from applied to offer
    • Notes and the job link
    • Follow-up reminders

    You'll meetDatabaseDrag and dropNotifications

  • Subscription tracker

    Inside
    • Price, cycle, renewal date
    • Monthly and yearly totals
    • A warning before a renewal

    You'll meetDatabaseChartsNotifications

  • Plant watering list

    Inside
    • A plant with a photo and an interval
    • A today list
    • A watering history

    You'll meetDatabaseStateNotifications

  • Mood journal

    Inside
    • A one-tap mood scale
    • A calendar colored by mood
    • A streak of days logged

    You'll meetDatabaseChartsSaved progress

  • Water tracker

    Inside
    • One tap per glass
    • A daily goal that fills up
    • A weekly chart

    You'll meetStateChartsSaved progress

  • Study planner

    Inside
    • Subjects and exam dates
    • Sessions on a calendar
    • What is next, at the top

    You'll meetDatabaseStateLayout

  • Savings goal tracker

    Inside
    • A target and deposits
    • A progress bar
    • An estimated finish date

    You'll meetFormsChartsSaved progress

  • Sleep log

    Inside
    • Bedtime and wake time
    • A rating each morning
    • A monthly trend chart

    You'll meetFormsChartsDatabase

  • Household chores board

    Inside
    • People and chores
    • A weekly rotation
    • Points per person

    You'll meetDatabaseDrag and dropState

AI app ideas

An assistant inside, with a job to do.

  • Support chatbot

    Inside
    • An FAQ you edit in the app
    • Answers only from that FAQ
    • Unanswered questions saved with an email

    You'll meetAI promptsDatabaseForms

  • Recipe from the fridge

    Inside
    • An ingredient list
    • A recipe with steps and servings
    • Saved favorites

    You'll meetAI promptsStateSaved progress

  • Flashcards from notes

    Inside
    • Cards from pasted notes
    • A quiz that repeats what you missed
    • Decks per subject

    You'll meetAI promptsDatabaseState

  • Cover letter writer

    Inside
    • Paste a resume and a posting
    • A draft in the tone you pick
    • Edit, copy or download

    You'll meetAI promptsFormsFile export

  • Trip planner

    Inside
    • Mornings, afternoons, evenings
    • Swap any stop
    • A map and a share link

    You'll meetAI promptsMapsRouting

  • Bedtime story generator

    Inside
    • The child's name in the story
    • Themes: space, dragons, the sea
    • A library of past stories

    You'll meetAI promptsFormsSaved progress

  • Meeting notes summarizer

    Inside
    • Summary, decisions, action items
    • Owners pulled out of the text
    • Searchable history

    You'll meetAI promptsDatabaseSearch

  • Language practice partner

    Inside
    • A chat that stays in your target language
    • Corrections beside your message
    • A vocabulary list from the chat

    You'll meetAI promptsStateDatabase

  • Product description writer

    Inside
    • Name, features, tone in
    • Three variants to choose from
    • Saved copy per product

    You'll meetAI promptsFormsDatabase

  • Quiz from any text

    Inside
    • Four options and an explanation each
    • A share link anyone can take
    • Scores per question

    You'll meetAI promptsRoutingDatabase

  • Email reply drafter

    Inside
    • Paste the email
    • Pick a tone: warm, brief, formal
    • Edit and copy the reply

    You'll meetAI promptsFormsState

  • Explain it three ways

    Inside
    • One topic, three explanations
    • A follow up question box
    • Saved explanations

    You'll meetAI promptsLayoutSaved progress

  • Business name generator

    Inside
    • Describe the business
    • Pick a style: playful, classic, short
    • Names with taglines, saved favorites

    You'll meetAI promptsFormsSaved progress

  • Workout plan generator

    Inside
    • Goal, days and equipment
    • A plan with sets and reps
    • Swap any exercise

    You'll meetAI promptsFormsDatabase

  • Interview practice

    Inside
    • Questions for the role
    • Feedback on each answer
    • A score and what to improve

    You'll meetAI promptsStateDatabase

How to choose a good app idea

  1. 1

    Fix something of yours

    The bill you split badly. The plant you forgot. The class that needs a quiz.

  2. 2

    Keep it small

    One screen, one job, one live URL. A finished small app beats a big one that stalls.

  3. 3

    Ship, then add one thing

    Show the first version to someone. Let them pick the next feature.

Questions

What are some good app ideas for beginners?

Anything with one screen and one job: a link-in-bio page, a pomodoro timer, tic-tac-toe, a QR code maker, a plant watering list. You finish it, publish it, and can read every file it took.

What apps don't exist yet?

Almost none. Every idea here exists somewhere, and the gap is never the idea, it is the version made for your people: a booking page for one barber, a quiz for one class. Take an idea and narrow it to someone you know.

How do I know if my app idea is good?

Build the smallest version, show it to a few people who have the problem, and see if they come back. A real prototype tells you more than a month of planning.

Do I have to code any of it?

No. Send any prompt and Coddy Build makes the app, with a live preview and a plain-English summary of each change. Open a concept card when a term is new, or ask about anything. The code is there whenever you want it.

What is the easiest app to build?

A page that shows something and saves one thing: a countdown, a link-in-bio page, a water tracker. No sign-in, no assistant, one screen. Send its prompt, publish, and you have a live URL before you have read the code.

Do these work on a phone?

Every app here is a web app, so it opens in any phone browser at its own URL and can be added to the home screen. There is nothing to submit to an app store.

Can I make money from one of these?

The business ideas take bookings, orders, quotes and signups for a real customer, which is where most small software businesses start. Publish to a live URL, connect your own domain on a paid plan, and add what the first users ask for.

Found one?

Free to start, no credit card. How Coddy Build works or see what others built.

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