I built Tanda to scratch my own itch. I m an expat, I carry a few cards and cash, and I never stuck with a budgeting app because every one died on the same step: manually entering expenses, or linking a bank I didn t want to connect. I also just wanted to say an expense out loud the way I wish Siri could.So it works by voice. You hold the mic and say what you spent, in English or Arabic, even a full day in one sentence ( 60 on Uber, 120 on food, 200 on groceries ). It comes back as separate categorized expenses (amount, currency, category, merchant) you confirm with one tap.Things that came out of actually using it:Multi-currency: every expense auto-converts to one base currency you pick, and it locks the rate to the date of the expense, not today s rate. The part I needed most as an expat. One place for everything: multiple accounts and cash, logged by voice, no bank linking. Shared Vaults: my partner and I log into a shared pool and both see the running total. Instant read: the home screen is one simple view of where money went, no dashboards to dig through. An assistant that answers money questions directly ( how much did I spend on food this month ) instead of making you build a report.The part I d want scrutinized is the voice pipeline, which runs on a privacy ladder. Standard sends audio to my server, which calls Groq Whisper to transcribe and Llama 3.3 70B to parse into structured fields. On-device mode (the free default) transcribes on the phone with a local Whisper model, so the audio never leaves the device and only the text is sent to the cloud to parse. Full Privacy keeps parsing on-device too, with no sync. Recorded audio is never stored or synced in any mode. SQLite is the source of truth on-device, Supabase with RLS is the sync target.Stack: React Native and Expo, on-device Whisper plus the native iOS speech recognizer, a thin Bun and Hono API that only proxies the AI calls and checks auth.iOS only for now, free with 10 voice entries a day. Pro is $4.99/mo for unlimited plus the assistant. No signup or email to try it.I d value feedback on parsing accuracy and where it breaks, the multi-currency handling, and whether the on-device tradeoff (slower, model download) is worth it. Happy to go deep on any of it.