Privacy

KOSTE has no accounts and no sign-up. You can use every calculator without telling us who you are.

What we store

• Your calculator inputs stay in your browser. We do not save them to a database.
• Your language choice is stored locally on your device so the site remembers it.

AI explanations

When you tap “Make this make sense” or ask KOSTE a question, the calculated result and your question are sent to our AI provider to generate an explanation. Don't include personal or sensitive information in your questions.

Analytics

We may collect aggregate, anonymous usage statistics (such as page views) to understand whether KOSTE is useful. This is not linked to you personally.

Contact

Questions about privacy? Reach us on social — we don't use email for support. Message us on Instagram @koste_za or TikTok @koste_za. Please don't send personal or financial details in a message.