Support

Last Updated: 10 September 2026

Contact

Email avelan.sverige@gmail.com. We answer within two working days.

Common questions

How accurate is the prediction?

The method (Khamis-Roche, Pediatrics 1994) places about 90 % of children within roughly 5 cm of their adult height when the inputs are correct. The app always shows a range for that reason, and it narrows as you log more heights.

The number changed after I logged a height.

That is by design: every new height re-anchors your place on the growth chart.

How do I cancel Tallwise Plus?

iOS Settings → your name → Subscriptions → Tallwise. Cancelling stops the next renewal; the current period stays active.

How do I delete my data?

More → Delete all my data, or delete the app. Nothing is stored anywhere else.