Centimo is an AI finance assistant that lives in WhatsApp. Just text your expenses, send a voice note, or snap a receipt, Centimo categorizes everything automatically and keeps your finances up to date. Ask anything: "how much did I spend on food this week?" Get an instant answer. Split group expenses, track who owes you, manage subscriptions, and export to Excel,all without leaving the chat. Free to start. Works in English and Spanish. No app to download, no account to set up. Just WhatsApp.
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Maker
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I've always found expense tracking annoying. Not because I didn't care about my finances — but because every app required too much friction. You had to open it, find the right category, type everything in. By the time you got home, you'd already forgotten half of what you spent.
I kept thinking: the fastest way to log something is to just say it. And everyone already has WhatsApp open all day.
So I built Centimo — an AI assistant that lives in your WhatsApp. You text it like you'd text a friend. "Coffee $3.50." "Split dinner $120 four ways." "How much did I spend this month?" It just works.
The twist: I built the entire thing solo, using AI as my co-developer. Every line of backend, every UI screen, every conversation flow — designed and shipped by one person with Claude as a coding partner. It's the most ambitious thing I've ever built, and I shipped it faster than I thought possible.
Centimo is free to start. I'd love for you to try it and tell me what you think.
👉 Just send "Hi" to +1 (786) 460-4884 on WhatsApp.