Nexa

Kanakku (കണക്ക്, "accounts") turns a Kerala shop's handwritten credit book into a ledger the shopkeeper can trust, without asking them to change how they work. THE PROBLEM Small shops in Kerala sell on credit (pattu) and record it in a paper book. Debts get forgotten, pages get disputed ("I paid you last week!"), and asking a neighbour for money is awkward. Digital ledger apps exist, but they ask the shopkeeper to type every sale into an app while serving customers. So many shops stay on paper. WHAT KANAKKU DOES - Speak while serving: "Rajan munnooru pattu" (Rajan, 300, on credit). - Type in Manglish, Malayalam script or English: "Rajan 350 pattu, Suresh 200 thannu". - Or keep writing in the book and take one photo of the page at closing time. Every row becomes a card, boxed on the photo. Muse Spark proposes the entries. The shopkeeper confirms each one, then Kanakku helps collect the money: overdue alerts ("2 customers are overdue · ₹2,500") and one-tap WhatsApp reminders in Malayalam and English, sent from the shop's own number. THE AI ASKS BEFORE IT GUESSES - Unclear entries are flagged, never guessed. "Latha 300" doesn't say if it's credit or a payment, so the app asks. - Two customers called Rajan? It asks "Which Rajan?" and won't put a debt on the wrong person. - The page total check: the AI copies the total written on the page but never adds it up. Code adds the rows and compares, so a mismatch reveals a misread row. - The AI never touches money. It only proposes. Balances are always the sum of saved entries in integer paise, nothing is ever deleted (undo adds a reversal), and "set Rajan's balance to 0" has nothing to act on. MEASURED, NOT CLAIMED - 25/25 on a 25-case eval (Manglish, Malayalam script, ambiguous inputs, prompt injection). 100% of ambiguous inputs sent for review, 0% false alarms. - About ₹0.23 ($0.0026) per entry with 1.6 s median response, roughly ₹200–330 a month in AI cost for a busy shop. - A live accuracy panel measures the AI against the shopkeeper's own corrections. - 50 automated tests. FEASIBILITY.md covers costs, limits and the business case. TRY IT https://kanakkumeta.onrender.com, access code: 1979 Tap "Load a demo shop", then try the example chips and the sample page buttons. No book needed.