Terms

Last updated 13 October 2026.

What this is

An educational tool that applies published research about infant vision and hearing to a camera frame or a sound. It is provided as is, for information.

Not a medical device

This is not a vision or hearing test, a screening tool, or an assessment of any kind. It describes what research says about babies in general and never evaluates your baby. If anything worries you, speak to your paediatrician or a paediatric eye doctor.

Purchases

Everything in the app is free. The one-time purchase removes the ads, permanently, on the store account that bought it, and anyone who bought an age stage before everything became free keeps the app without ads as well. Refunds are handled by the store you bought it from, under that store’s policy.

Unlock codes

On Android, a valid unlock code removes the ads, permanently and free. It is honoured for as long as the app exists, and a code already redeemed is never revoked by a later change to what is sold. The iPhone and iPad app does not take codes: there, the ads are removed only by the App Store purchase.

Liability

To the extent the law allows, this app is provided without warranty. It cannot and does not tell you anything about your own baby’s sight or hearing.

If this document changes, the date above changes with it, in the same release.