ChompDuo

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There’s a monster in your phone

Why we expect it: A playful, well-described monster concept with clear value, free to try, and a fun hook for curious users.

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In short

ChompDuo is a games app that turns a phone into a monster with a face on its cover screen and a mouth inside when opened. It offers six monster styles, with the Cartoon style free and the rest unlocked by a one-time purchase. Its standout feature is that the jaws follow the hinge, so folding the device closes the teeth.

Summary by Debuts, based on the App Store listing.

About

There’s a monster in your phone.

Close it, and a pair of silly eyes stares back at you from the cover screen. Tap them and they jump.

Open it, and the inside display becomes a mouth. The jaws follow the hinge: fold the Duo a little and the teeth come together, snap it shut and it CHOMPS, with a crunch and a thump you can feel. Tap the mouth to bite, or drag to squeeze it shut.

Pick your monster: • Cartoon: big purple grin and googly eyes • Softie: buck teeth and rosy cheeks • Organic: slimy fangs and a swamp-green hide • Mimic: a treasure chest with teeth, gold coins and a tentacle inside • Classic: a very human smile • Pumpkin: a carved jack-o'-lantern grin, lit from inside, seeds and all

Every monster has its own eyes, its own teeth, its own sounds and its own inside. Tilt the phone and the face moves with you.

No iPhone Duo? It works on any iPhone with iOS 27: tap the eyes twice and the mouth opens.

Cartoon is free. A one-time purchase unlocks the other five monsters. No ads, no subscription, no account.

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