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Karobar: the build diary

Billing and shop software requested by a restaurant owner in Melbourne, tested first with Pakistani shops, and now growing into an international SaaS product for Australia and Europe.

About this project

Karobar, part 2: from invoices to a shop that can really run on it

October 2026 on Karobar: receipt printing, the Android app, free WhatsApp bills, email from the shop’s own Gmail, returns, an online shop and a public demo that resets every night.

Problem solved: shop bills that keep working when the internet drops

How Karobar keeps billing through internet cuts: a local copy of the shop, an outbox for new bills, sync that fetches only what changed, and why applying the same record twice has to be harmless.

Karobar, part 1: a brief from Melbourne, and a first test in Pakistan

September 2026 on Karobar: how a Melbourne client’s request became shop software with plans, trials and a super admin from the first month, and why it was tested in Pakistan first.