🟢 One session — A few hours, sittable in one gonext.js
Pasting a cron expression into Google for the hundredth time
“I see `*/15 3 * * 1-5` in a config and have no idea when it runs without looking it up. Same with obscure config snippets — I just want it in English.”— Hacker News ↗
The gap
Single-purpose cron decoders exist but are ad-choked and isolated. A clean explainer that also shows the next 5 run times (and handles a couple of other cryptic formats) is a fast, pleasant utility you'd actually bookmark.
For
Developers and ops folks reading unfamiliar configs
Paste-ready build prompt
Build a cron explainer in Next.js. User pastes a cron expression; render a plain-English description plus the next 5 fire times in their timezone. No AI needed — parse it directly (e.g. cron-parser). First 3 steps: (1) input + validation with helpful errors, (2) human-readable translation of each field, (3) next-5-runs list using the user's timezone. Keep the UI clean and instant; make it shareable via URL query param.