First run: what to expect
Install Spenlio, grant SMS access when asked, and let it scan your inbox once. The first scan reads your full message history on the device — months of transactions appear grouped by day, with accounts and cards detected automatically. After that, new messages are picked up as they arrive.
Why Spenlio asks to read SMS
Reading bank and card messages on the device is the entire product — that's where your transactions come from. Reading never uploads your messages, and senders that are phone numbers (people) are left alone. The full detail is in the SMS Permission Policy.
Nothing showed up?
Check that your banks actually send transactional SMS to this phone and that Spenlio has SMS permission in Android Settings → Apps → Spenlio → Permissions. If messages exist but weren't recognized, they're from a format Spenlio hasn't learned yet — you can optionally turn on sharing so it learns.