Do we need a piano to try the first lessons?
You can begin Little Keys on the screen keyboard. It gives a child a way to hear and find notes before your family decides whether to use a physical instrument.
What a screen keyboard is good for
The screen lets a child notice higher and lower sounds, find groups of keys, follow a short pattern, and make a simple musical idea. These are useful first experiences. The three free starter lessons are available without a piano or parent account.
Keep the device steady and the sound at a comfortable level. If tapping a small screen feels awkward, try a larger screen or take turns pointing and playing.
What needs real keys
A touch screen cannot show how a child balances their hands, uses key weight, or controls a physical piano. Those skills need a real instrument and, where appropriate, observation by a grown-up or teacher. Little Keys does not treat a screen tap as proof of physical technique.
If your child keeps asking to play, a usable keyboard or piano gives them more room to explore. Check that keys work, sound is clear, the seat fits, and the instrument can be placed somewhere your child can return to it.
Choose for your family, not for day one
There is no need to buy an instrument before trying the free lessons. If you later want formal piano teaching, ask the teacher what instrument their course requires. Some courses expect an 88-key weighted instrument; the Little Keys starter does not.
Further reading: The Royal Conservatory: instrument expectations for one group course.