Wobbi: a 3D playroom for curious little minds

Apps for small children often arrive with the habits of apps for adults: sign-ins, streaks, ads, and purchases a toddler can tap by accident. Wobbi takes the opposite position. It is a toy playhouse in the browser, free and ad-free, where each room opens a world and children learn by touching, building, listening, and exploring. No reading is needed.

The product problem

Designing for a one-year-old and an eight-year-old at the same time is the hard part. Wobbi had to:

• give babies big, forgiving targets and instant cause and effect;
• guide toddlers with names spoken aloud and simple listen-and-copy games;
• give older kids goals, real facts, and creations they can save;
• leave out everything that turns play into a compulsion;
• keep grown-up controls out of small hands.

The first screen is the toy

Wobbi opens on a 3D dollhouse in a little garden world: an attic under the stars, rooms with blocks and a xylophone, a dinosaur in the room below, and islands of books and fruit on either side. Beneath it, one question, "Who's playing?", with three large buttons: Baby, ages one to two; Toddler, two to four; and Kids, four to eight. The choice shapes the play that follows.

Worlds, stories, and games

Twelve worlds sit behind the doors, each with an age range:

• pop-up books about dinosaurs, space, animals and their babies, and where fruit grows;
• a wooden toybox with real physics for stacking and toppling;
• a music garden of singing flowers and drum mushrooms, and a color laboratory for mixing paint;
• a pretend-play town, a fairy tale theatre with character voices, and gentle games like Hop Hop Hills, Feed the Friends, and Peekaboo Garden.

It grows with your child

Each age band changes how the same worlds behave. For babies, every tap does something delightful. For toddlers, play is guided and names are spoken aloud. For kids, there are puzzles, routines, songs to record, and creations to save.

Safe by design

The safety section is short and specific:

• No sign-in for children. Open it and play, with progress saved on the device.
• No ads, no tracking. No analytics, no in-app purchases, no loot boxes, and no streaks.
• Parents stay in charge. Settings and optional family sync live behind a grown-ups gate.
• Made from code. Every toy, creature, and sound is generated, calm and consistent.

A page for parents and a plain FAQ answer the questions grown-ups ask: is it free, does my child need an account, what data is collected, and can my child play without reading.

What the work reinforced

1. For small children, the interface is the content. Big targets and immediate feedback are the lesson.
2. Leaving things out is a design decision. No ads and no streaks shaped every screen.
3. Gate the grown-up controls. Children explore freely when settings are out of reach.

Continuing work

Wobbi is free to play now, and this story will be updated as new worlds arrive. If you are building for children, write down what you will never add before you plan what you will.