Heart Box

Edit 11/01/2019: With the release of the 1.10.33.0 update all the skins related achievements have been fixed. If you have already completed the requirements the achievements don't pop up right away, I had to apply a skin for them to unlock.

Currently unobtainable. The developer is aware and will try to fix it with an update.

You can buy skins with in-game currency that you earn with daily bonuses or resolving puzzles.
You can also buy a pack with all the skins with real life money.
To access the shop you need to be in a level and then click the shopping cart in the top-left part of the screen.

PINK SKINS

FACE --- 3,800
Cat --- 200
Minecraft girl --- 600
Blue eyes girl --- 500
Purple eyes --- 1,000
Bluebird --- 1,500

BOX --- 3,200
Green with dots --- 200
Red hexagons --- 300
Cat --- 400
Pig --- 500
Purple stripes --- 800
Bluebird --- 1,000

HAT --- 870
Flowers --- 100
Tiara --- 120
Stars --- 150
Chef --- 150
Feathers --- 150
Flower pot --- 200

BOTTOM --- 870
Pink dress --- 100
Blue and white stripes --- 120
Tire --- 150
Yellow and orange --- 150
Scarf --- 150
Unicorn --- 200

GLASSES --- 1,050
Daisies --- 100
Shutter --- 150
Hearts --- 150
Lips --- 150
Stars --- 250
Carnaval --- 250

EFFECTS --- 1,100
Daisy --- 150
Clover --- 150
Heart --- 100
Lip --- 200
Candy --- 200
Cupcake --- 300

TOTAL PINK SKINS --- 10,890 or 1,59 € (or local equivalent)

TOTAL BLUE SKINS --- 7,940 or 1,59 € (or local equivalent)
TOTAL YELLOW SKINS --- 14,900 or 3,09 € (or local equivalent)

TOTAL EVERY SKIN (EXCEPT FIOLET) --- 33,730 or 6,27 € (or local equivalent)