Baby Lenny
Raise a virtual baby and teach him to talk.
Lenny is a baby who can't say a word yet — and you're the parent. Teach him 6 new words every day by showing him things, making gestures and saying words. He reacts, repeats, remembers, and soon he is talking back to you.
For iPhone · Free to download · No ads
A baby who learns from you
Everything Lenny can say, you taught him.
Six new words every day
Each day brings "Today's Words": 6 new words for Lenny to learn. There are 8 days and 48 words of lessons today, with more coming.
Show, gesture, say
Teach a word by showing Lenny objects — a cookie, an apple, a puppy, a ball, a ring — by gestures like a smile, a wave or a kiss, and by saying words on the word keyboard.
He reacts like a real baby
Lenny answers with facial expressions, his voice and gestures. He repeats the word you taught him, and he remembers it.
Talk to Lenny
After a day's words, build sentences from everything he has learned so far — and Lenny answers you in his own words.
Moods and feelings
Lenny can be happy, sad, insulted or comforted. What you say to him changes how he feels, and how he answers.
Keep your Lenny
Create an optional Lenny ID with Sign in with Apple to save your progress and move Lenny to another device.
See Lenny in action
How it works
- 1
Open Today's Words
Every day Lenny is ready for 6 new words. Pick up where you left off and start teaching.
- 2
Teach each word
Show him an object, make a gesture, say the word. Lenny watches, reacts and repeats it back to you.
- 3
Talk to Lenny
When the day's words are done, build sentences from the words he knows and see what he has to say.
Private by design
The AI runs on your device
Lenny's replies come from a small AI model that runs entirely on your iPhone. There is no cloud AI, and nothing you type is sent to an AI service.
No ads, no microphone, no camera
Baby Lenny shows no ads and never uses your microphone or camera. You can play without creating an account.
Baby Lenny is free to download. Optional in-app purchases — Grow up Lenny, tips packs and a cookie for Lenny — are processed by Apple, and you get 2 free tips every day.
Read the Privacy Policy