FAQ

Is it accurate enough for real work?

The calculations follow the metal's neutral axis and include saw kerf and profile, and every formula is covered by automated tests. Values for things that depend on your hands – fit of square rings, doming, setting dimensions – are marked as guide values. Make a test piece in copper the first time.

How does the on-screen ring sizer work?

Lay the ring on the screen and adjust the circle to the inner edge. For best accuracy, calibrate once with any bank card (they all have the same size).

Which ring size systems are supported?

Swedish (inner diameter in mm), EU (circumference in mm), UK letters with halves and US sizes.

Where do the metal prices come from?

Spot prices are fetched from a public price service and converted to your currency. You can always enter your own price instead – spot price is not what you pay for sheet and wire.

Does it work offline?

Yes. Everything works without a connection; prices use the last fetched value.

Do I need an account?

No. There is no login, and your data stays on your phone.

What happens to my data if I change phones?

Make a backup in Settings and restore it on the new phone. It contains projects, photos, stock and settings.

Which languages?

English and Swedish, with German, French, Spanish, Italian, Norwegian, Danish and Finnish.

Is there an Android version?

Yes, it is on Google Play, with the same features as on iPhone. It needs Android 8.0 or later.