Expense Robot

Expense Robot (@expense_robot) describes itself in one line: calculate your expenses easily, record all, and "we do not collect any personal information". Beyond that promise, what can be confirmed is its command menu, as listed by the BotoStore catalogue: /permonth shows expenses per day for the last month, /percat shows monthly spending by category, /top10 lists the ten largest expenses of the month, and /help explains the rest.

That is the whole feature set on record: no budgets, shared tracking, reminders or export are mentioned. The bot has no website, no named developer and no privacy policy beyond the sentence in its description, so the no-data promise cannot be checked. It suits someone who wants the smallest possible logger and is comfortable with that uncertainty.