Questions, answered.

Yes — the core calculators are free forever with no ads. Some advanced pro features may be offered as optional subscriptions in the future, but the everyday essentials will always remain free.

No. All core calculators are offline-first and work perfectly in airplane mode. Only optional features — cloud sync and online AI — require a connection, and both are off by default.

We collect almost nothing. Core usage never leaves your device. Optional account sync, crash reporting and AI features are explained in detail in our Privacy Policy — and you can opt out of everything.

Android apps are live today, and the whole ecosystem is designed cross-platform. A web version is in development, with desktop apps planned. All versions share the same design language.

BYOK means 'Bring Your Own Key' — you add your own AI API key and use AI features through your own provider and account. Your key stays in your device's secure keystore, and we never see your conversations.

Yes. Optional local AI models can be downloaded once and then run fully on-device — no internet, no cloud, complete privacy. Local models are smaller but cover most everyday explanations.

No. We believe the best calculators are calm and clean. There are no third-party ads and no ad SDKs in any of our apps.

If you sign in with Google and enable sync, your history and settings sync across your devices through Supabase with encryption in transit. Sync is opt-in, off by default, and deletable anytime.

Soon! The Creator Platform lets anyone build calculators with a visual editor — no code required — and publish them to the Creator Marketplace. Watch this site for launch announcements.

Use the Support page to send a bug report or feature request directly to us. Bug reports with reproduction steps are fixed fastest. You can also open an issue on our GitHub.