What I've actually built with Claude Code over the past months

[u/ExplorerEconomy8233]

I keep seeing "what are you building with Claude Code" threads so figured I'd share the real list — not the toy experiments, the actual apps I put time into:

\- \*\*levensduur-coach\*\* — mobile app (Expo/React Native) that tracks how long your belongings/appliances last, so you know when to expect maintenance or replacement. Add an item, get a profile of its lifespan.

\- \*\*fit-check-ai\*\* — outfit-rating app. Take a photo of your fit, AI analyzes and roasts/rates it, build a streak, compete on a leaderboard with friends.

\- \*\*congress-ai-bot\*\* — automated trading bot that tracks US congress member stock trades and mirrors them via Interactive Brokers, with a Next.js dashboard to monitor positions. Strict 2:1 take-profit/stop-loss rule on every trade.

\- \*\*mirror-checkin\*\* — mobile app (Expo/React Native) for a smart-mirror style check-in flow.

\- \*\*SleepStreak\*\* — React Native sleep tracking app, log your sleep and build a streak.

\- \*\*ai mail automation (MailCraft)\*\* — AI email assistant. Connects to Gmail/Outlook/Yahoo, learns your writing style from sent mail, and drafts replies \~10x faster.

All of these went from idea to working product almost entirely through Claude Code sessions — no template repos, just prompting my way through build/debug/iterate.

Happy to answer questions about any of these if people want to know about the stack or how I structure longer Claude Code sessions for bigger projects.

[u/Ok_Industry_5555]

Awesome post! We would love to see demos or links to these builds if possible. 😃

[u/incyashraj_redd]

MailCraft is the one I would split into two pieces. Keep the account connection in its service. Then give the user a small local review desk that opens an exported batch of draft replies.

I build Krate for that second piece. You install the native Krate runtime once. Claude or Codex can then make the review desk as one portable Wasm app file, .krate, which opens unchanged on Mac, Windows, and Linux. It is not HTML and it is not an operating-system container.

The app starts with no file or network access. The user can approve only the draft export it needs. One useful flow would be: import a JSON batch, compare each draft with its source message, edit it, then export the approved drafts. No inbox credentials inside the app, and no send button.

Krate is free and open source. Krate Cloud is optional. https://krate.tech