ColorRing
Coloring book for relaxation
A coloring game that helps you relax with calm, enjoyable color therapy.
Apps for creativity, mind and body
Martin Grey makes apps for coloring, puzzles, fitness and habits, and ad-free games for kids.
Our apps
MG Fitness
Home workouts
Workouts and programs you can do at home, matched to your level, on iPhone and Apple Watch.
MG Puzzle
Jigsaw puzzles from any photo
Thousands of jigsaw puzzles for kids and adults, or make your own from a photo. Plays offline.
MyTact
Habit tracker
Build good habits, drop bad ones and keep track of your progress, with a community for support.
Coming soon
For kids
No ads · No data collection · Works offline
MGKidsPuzzle
Puzzles for ages 3–7
Puzzles for toddlers and preschoolers that train attention, memory and imagination.
MGKidsMemory
Matching pairs
Find the matching cards: fruits, animals, toys and more. A playful memory workout.
MGKidsShadow
Find the shadow
Match each picture to its shadow and learn shapes, colors and the world around.
MGKidsSpy
Hidden objects
Look closely and find the hidden objects in bright scenes. Trains focus and logic.
MGKidsWords
Word search for kids
Find the words hidden in the letter grid, with topics and levels for different ages.
Contact
Support
Questions about an app, a purchase or your data? Write to us and we will answer.
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