Dad Bank 🏦
Keep your pocket money in the family bank and watch it grow. The longer you leave it, the faster it grows, because your interest earns interest too.
For grown-ups: this is a pretend bank. No real money moves; you keep the cash and the app keeps the record. You choose the interest rate. It starts at 2% a week: generous on purpose so growth is easy to see (a real bank pays about 2–3% a year, which is worth explaining one day). Very high rates make small sums balloon unrealistically, so 1–3% a week or 5–10% a month works best. It's saved in this browser. To use it on more than one phone, turn on Family sync: you get a secret family link, no account or password. The bank is locked (encrypted) on your device with the family code before it's stored online, so the server can't read names or amounts; anyone you give the link to can. The PIN only stops small fingers; it isn't real security.