Case study

Kos Manager: running a boarding house from one app

Our own product. An iOS and Android app that replaces the chats, spreadsheets and paper contracts kos owners used to juggle.

  • 1,250+downloads
  • iOS & Androidone shared database
  • 3website languages
  • PDF & Excelreport export

The problem

What owners were dealing with

  • Bills and receipts buried in chat threads

  • Rooms and meters tracked in separate spreadsheets

  • Paper contracts that go missing

What we built

One app for the whole kos

  • Digital contracts

    Signed on the tenant's phone, saved as an official PDF.

  • Tenant self check-in

    One link; the tenant fills in their own details.

  • Bill reminders

    Due and late bills flagged, reminders over WhatsApp or LINE.

  • Costs & meters

    Spending and electricity or water readings per room.

  • Journal-backed reports

    Profit, arrears and occupancy, export to PDF or Excel.

  • Multi-property

    Several houses in one account, owner and caretaker on the same data.

Inside the app

Real screens from the live app

Signature feature

From check-in link to signed contract

  1. Owner sends a check-in link

  2. Tenant fills in details and signs

  3. Contract is stored as a PDF

We also built kosmanager.id, the product's website in Indonesian, English and Chinese, with guides and templates that bring owners in from Google.

Sangat membantu ku dalam mengelola kos, apalagi aku di tempat yg beda sama lokasi kos ku

It helps me a lot in running my boarding house, especially since I live somewhere other than where the place is.

Daniel Sheva · Google Play review

Start a project

Have an app idea like this?

A short description is enough. We'll come back with a plan, timeline and quote.

Prefer to talk directly?

Request a free consultation

What are you trying to achieve, and by when?