What you're actually handing over
An expense tracker doesn't just hold numbers. Your transactions reveal where you live, where you eat, your health, your habits, and your income. That's some of the most sensitive data you own — so 'it's just a budgeting app' is exactly the wrong way to think about the trade.
Five questions to ask before you trust one
1) Where is my data processed — on my device, or on their servers? 2) Does the AI read my transactions in the cloud? 3) Is my data ever used for ads or sold? 4) Can I export everything and delete my account for real? 5) Does it need my bank login, or does it work from messages I already receive?
If a tracker needs your bank username and password, that single answer should give you pause. Reading the SMS and slips your bank already sends you is a far smaller thing to trust.
Why on-device wins
Pocketbird was built around a simple rule: your money data stays on your iPhone. Bank SMS is read by on-device AI and never uploaded. The Ask Pocketbird chat and Smart paste run with Apple's on-device intelligence, so your questions never reach a server. Your ledger is encrypted and syncs only across your own devices — and under Thailand's PDPA you can export or delete all of it, anytime.
Try Pocketbird
Pocketbird is a private budgeting app for iPhone — paste a bank message and it is read on-device, see what's safe to spend today, and the core is free.