KobiAssist · Mobile apps for small businesses

Here so you don't wear yourself out.

We build simple, clear mobile apps that meet small businesses' most basic needs — to save you time and money, and to get paper and pen out of your life.

Get to Know Us

Our app: Kara Kaplı Defter

Kara Kaplı Defter

New Entry tap — opens from below

Records · 12 entries

Sand filter change — Pelin HotelDUE 12/08/26 · today +12,500.00COLLECTION · TL

Chlorine + pH balancer — HavuzmarketDUE 05/08/26 · yesterday −3,780.50PAYMENT · TL

Pump repair advance — Mavi Su ComplexDUE 20/08/26 · 02/08 +8,400.00COLLECTION · TL

Skimmer gasket + O-ringDUE 28/07/26 · overdue −1,250.00PAYMENT · TL

Collections Accounts Tools

Kara Kaplı Defter · Collections1:1 UI

01 · About us

KobiAssist sets out to meet small businesses' most basic needs simply and clearly — to save you time and money, to keep paper, pen and the computer as far from your life as possible — by building mobile apps and by taking on the custom requests your work calls for.

Our first labour of love toward that end is "Kara Kaplı Defter" — stay tuned for what comes next...

02 · Our app

Your black ledger, now in your pocket.

Collections & payments and customer accounts, calculation tools built for your trade, PDF reports and WhatsApp sharing — the trusty ledger from under the counter, now in your pocket. 45 days free.

App Store Google Play

What's next?

There's a new app on
our workbench.

Ideas breed ideas — we started somewhere, and there's more to come. For now, one hint: you won't wear yourself out. Stay tuned: @kobiassist

Coming soon

Kara Kaplı Defter ████ ████ ██████ ██

Here so you don't wear yourself out.

Your black ledger, now in your pocket.

There's a new app onour workbench.

There's a new app on
our workbench.