CHONGCHONG-i
LOCK SCREEN · STEP PET

Walk to grow
your pixel pet

ChongChong-i is a 90s-handheld-style pixel pet that lives on your lock screen and home screen. Every step is a coin, and you can feed it, pet it and clean its room right from the widget — no need to open the app.

App Store COMING SOON ▶ Google Play COMING SOON

iPhone (widget buttons on iOS 17+) · Android · English / 한국어

Lock screen widgets, a 2x2 Mini Room and a 4x2 Console widget with Feed, Pet and Clean buttons
The ChongChong-i lineup: Classic, Mochi, Sprout, Dragon, Alien and Couch Potato

FEATURES

The more you walk, the more it grows

1 step = 1 coin. Set a daily goal from 3,000 to 15,000 steps, watch your pet evolve the way you walk, and breed one-of-a-kind pets with friends.

Lock screen and home screen widgets

01Care for it from your widgets

No need to open the app. Your pet greets you every time you pick up your phone.

  • Lock screen: a monochrome LCD pet with today's steps and status hearts
  • 2x2 Mini Room: the view outside changes from morning to night
  • 4x2 Console: [Feed] [Pet] [Clean] buttons right on your widget
Evolution Dex and 16 color palettes

02Evolves the way you walk

Egg → Baby → Fit, Crammer or Couch Potato. Walk steadily and it gets fit, cram your steps into one day and it becomes a crammer, skip walking… and meet the Couch Potato.

  • 16 color palettes and hidden species (dragons and aliens)
  • 6 signature motions and unique care traits per pet
  • Collect them all to complete your Dex
Couch-Potato Diagnosis receipt

03Skip walking? Get diagnosed.

Raise a Couch Potato and the "doctor" issues a brutally honest diagnosis based on your weekly steps. Save it as an image and share it with friends.

Breeding by QR and a pedigree certificate

04Breed with friends by QR

Swap your pet's genome QR (or code) with a friend — no server needed. Eggs hatch only after you walk them.

  • A new egg mixes species, color, personality and care traits
  • The more both pets walk, the higher the odds of hidden mutants and rare palettes
  • Family Tree, pedigree certificates, Graduation Album and breeder ranks
Pixel shop rooms and console frames

05Steps are coins. Decorate!

Meadow, Y2K Grid, Summer Beach and Space Station rooms plus collectible console frames — and seasonal rooms that open only for cherry blossom, Halloween, Christmas and New Year.

Nursery and cheer synergy

06Your pets never disappear

Raise a new egg and your current pet rests in the nursery, with time frozen while it rests.

  • Up to 24 nursery slots
  • More resting pets, more step coins (up to +20%)
  • 3 different species cut hatching steps by 10%

100% ON-DEVICE

No servers. Your steps stay on your phone.

ChongChong-i has no sign-up, no login and no servers.

Stored on deviceSteps and battery data are never uploaded anywhere.
Built-in pedometer onlyNo HealthKit or Health Connect access.
No accountInstall, name your pet and you're ready.
Save codesSwitching phones? Move everything with one code.

Read the privacy policy →

HOW TO START

Getting started

Install & name itAn egg arrives. Give it a name you love.
Allow step accessAllow Motion & Fitness so your steps turn into coins.
Add the widgetsPut your pet on the lock screen and home screen and you're set! How to add widgets