A solo app build shows why Claude, Codex, and token budget matter
A product designer with 20 years of experience built Kepp, a save-for-later app, alone. Existing tools felt too heavy, too strict about organization, or hard to trust because saved items were still difficult to find later.
The goal was a simple app with no folders and no system to maintain: save something, find it, and move on. Even without being an engineer, the work covered the frontend, backend, , App Store and submissions, analytics, legal documents, privacy setup, payments, and the .
Claude and Codex handled roughly two-thirds of the build. The experience also showed that managing a is a real skill when building alone.
Key points
- Kepp is a simple app for saving things and finding them again later.
- The main were bloated features, rigid organization, and weak trust in existing tools.
- A non-engineer handled the product, app build, launch setup, payments, privacy, and alone.
- Claude and Codex were used for about two-thirds of the build.
- management became an important practical skill for solo building.