15 ideas
Your own Strava
A run and ride tracking app: record or upload GPS activities, map, pace and elevation for each activity, follow friends and give kudos and more.
1–2 weeksYour own MyFitnessPal
A calorie and nutrition tracker: log meals from a food database, barcode scanning, daily calorie and macro goals and more.
WeekendYour own Cal AI
An AI calorie counter that works from photos: snap a photo of a meal, aI estimates calories and macros, edit the estimate before saving and more.
WeekendYour own Headspace
A guided meditation app: library of guided sessions, audio player with a timer, daily streaks and more.
WeekendYour own Calm
A sleep and meditation app: sleep stories and soundscapes, guided meditations, breathing exercise animation and more.
WeekendYour own Hevy
A gym workout logger: log sets, reps and weight, routines you can reuse, rest timer and more.
WeekendYour own Flo
A period and cycle tracker: log periods and symptoms, cycle predictions, calendar view and more.
WeekendYour own Peloton
Live and on-demand workout classes: class library by type and length, video player with a metrics overlay, live classes on a schedule and more.
1–2 weeksYour own Trainerize
An app for personal trainers and clients: trainer builds workout plans, client logs workouts, nutrition tracking and more.
1–2 weeksYour own WHOOP
A recovery and strain tracker: import data from a wearable, recovery score, strain score and more.
1–2 weeksYour own Yuka
A food and cosmetics scanner: scan barcodes, health score, ingredient breakdown and more.
WeekendYour own Strong
A strength training log: workout templates, log sets fast, plate calculator and more.
WeekendYour own Finch
A self-care pet app: a pet that grows as you do self-care, daily goals, mood check-ins and more.
WeekendYour own Runna
Personalised running plans: plan for a race and date, workouts by pace zones, sync with Strava or a watch and more.
1–2 weeksYour own Fitbod
An AI workout planner: generate workouts by goal and equipment, muscle recovery map, log sets and more.
1–2 weeks
More things to build
Upscalers, background removers, converters and generators. Image tools pull huge search volume and most of the work can run in the browser.
Compressors, croppers, GIF makers, subtitle generators and intro makers that people search for every month.
Voice generators, transcription, trimmers and noise removal. Pair a simple editor with a speech API and you have a product.
Hashtag, caption, title and bio generators, plus schedulers and thread tools. Small AI tools with steady search demand from creators.
Checkers, validators and generators for site owners: sitemaps, robots.txt, meta tags, SSL, speed and broken links.
Resume builders, AI writers and other everyday tools that people search for by name.
Profit, tax, churn, ROI and creator rate calculators. The easiest wins on this page: no backend, one formula, and searchers who are ready to act.
Your own take on ChatGPT, Perplexity, Midjourney, Otter and more, each with a prompt that wires up the API calls for you.
Feeds, follows, stories and communities: prompts for your own Instagram, Reddit, Threads or Letterboxd for a niche.
Chat, email and calls, from a Slack for your community to a Discord-style server app.
Swipe stacks, matches and chat for a niche dating app, with safety features built in from the start.
To-do lists, notes, wikis, kanban boards and project trackers. Most are a weekend to a week with Claude Code.
Form builders, help desks, e-signature, website builders and design tools. Plenty of people pay for each of these every month.
CRMs, email marketing, social schedulers and lead tools: the software that businesses pay per seat for.
Budgeting, invoicing, expense tracking, trading journals and more. Where money moves, the prompts point you to a licensed provider.
Job boards, applicant tracking, shift scheduling and HR records for small teams.
Two-sided marketplaces and online stores, from a niche Etsy to a local Airbnb, with payments through Stripe Connect.
Scheduling, appointments, reservations and point of sale for local businesses: some of the easiest software to sell.
Flashcards, quizzes, courses and homework help, with Claude generating the lesson content.
Streaming, players, live video and media databases, with a video or audio API doing the heavy lifting.
Link-in-bio pages, newsletters, digital product stores, memberships and video editors for creators.
Maps, trail finders, flight trackers and booking tools built on open map data and travel APIs.
Scanners, file storage, password managers, blockers and other everyday tools.
Original browser games in the genres of the classics: puzzle, arcade, platformer, runner and party games. Your own name, art and levels, with familiar mechanics.
Give Claude more to work with while it builds: skills, MCP servers and subagents. Once it ships, use the overnight prompts to find users for it.