TurtleWiz: Fidget Illusion

This is one of those apps you understand with your hand, not your eyes.

Hold your iPhone and move it just a little.

A metal ball hits the wall — tap.
You feel the impact in your hand and hear the collision.

Turn the ratchet dial — click, click, click.
Pop a bubble — snap.

This isn't just an animation on a screen.

Your iPhone's motion sensors, real-time physics, haptics, and sound work together to create a tiny physical illusion — the strange feeling that something might actually be moving inside your phone.

Don't just look at it.
Hold it.

FOUR PHYSICAL ILLUSIONS

• Spin the Metal Ball
Move your iPhone in a small circle and watch the ball respond to the actual motion of your device. Every collision with the wall produces metallic sound and haptic feedback.

• Move the Heavy Ball
Move a large metal ball up and down inside its chamber. When it hits the ends, you don't just see the impact — you feel it.

• Turn the Ratchet Dial
Rotate the dial directly with your finger. Each tiny ratchet step answers with a click and a matching haptic response.

• Pop the Bubbles
Tap through 20 bubbles one by one. Each pop combines a sharp sound with its own haptic sensation. Finish them all and a fresh set appears automatically.

HAPTICS YOU CAN ADJUST

Choose from three haptic levels: Low, Medium, or High.

The metal balls, dial, and bubbles each have their own sound and tactile character.

Your accumulated interactions are stored locally on your device.

SIMPLE BY DESIGN

• No ads
• No account required
• No third-party analytics SDK
• Motion data stays on your device
• Try all features for the first 3 days
• Unlock full access with a one-time purchase
• No subscription

Hold your iPhone securely. Small movements are enough — there's no need to swing or throw your device.

Screenshots can't really explain this one.

You have to hold it.