Hi Product Hunt! 👋

I’m Vimlan, a director of a heavy-fabrication contractor in Malaysia. For years, I watched the same problem repeat across projects: the site moves fast, important updates disappear inside Telegram and WhatsApp groups, and every evening someone rebuilds the daily report by scrolling through chat. Meanwhile, the Gantt chart quietly stops matching reality.

Rangka is my answer—built from inside the industry:

1. Supervisors report through Telegram, with no new field app to learn
2. Messages, photos and voice notes become an organised, evidence-linked site record
3. AI prepares the daily report, but a project manager must review and approve it
4. The project schedule is simple enough for the team to keep current
5. Schedule updates remain connected to the field evidence behind them—important when building extension-of-time and delay records

The principle is simple: AI prepares. The PM approves.

Rangka is built for contractors and priced per active project, not per seat, because site headcount changes from week to week.

We’ve also released a completely free Gantt maker and construction schedule template library. Neither requires an account, and I’d genuinely appreciate your feedback on them too.

Ask me anything about construction technology, building for non-desk teams, or why I chose Telegram instead of creating another dedicated field app.

Thanks for checking out Rangka!

Rangka

Turn site messages and voice notes into valuable records.

Turn site messages and voice notes into valuable records.