Why financial data is more personal than you think

A year of bank statements is closer to a diary than a spreadsheet. Once you see what transactions reveal, giving them to an ad-supported app looks very different.

Location, routines, health conditions, political donations, religion, relationships, addictions. Categorised spending exposes the shape of a life more accurately than any survey.

Advertisers for targeting, insurers for pricing, data brokers for resale, employers in some jurisdictions, and — if there's a breach — anyone who wants it.

A single transaction is trivia. Twelve months of them, combined with basic demographics, becomes an accurate personal profile that outlives any single choice you made.

Use a local-first, paid finance app. Read privacy policies for retention and resale. Revoke Open Banking consents you don't use. Small choices compound.

Isn't my bank already selling this data? Regulated banks in the EU have tight limits. Finance apps built on ad models often have far weaker constraints.

Does deleting the app delete the data? For local-first apps like KRONO, yes — the data lived on your device. Cloud-based apps usually retain copies for years.

Should I stop using digital finance tools? No — just choose ones whose business model doesn't require your data. That's the whole point of paid, local-first apps.