Send texts with the official H2O Just Add Water custom keyboards! With this app you can replace the standard Apple keyboard with keyboards featuring the H2O mermaids, cool sound effects & music.

Themes include Underwater Explorers, Mermaids on the Beach, and The Moon Pool; each with its own unique look and sounds. Different keys make different sounds, so make sure you explore everything.

Once installed, you can use any of the included keyboards to text, email, or any other time you need to type.

But whatever you type remains private to you - this app does not track what you type. See our privacy policy for details

Note that to use this app, iOS 8 must be installed on your iPhone. Models iPhone 4s and newer can be updated to iOS8.

Developed by the makers of keySonic - for more customized keyboards check out:
* web:
* Facebook:
* Twitter: @keysonicapp

Customer Reviews

3.8 out of 5

6 Ratings

6 Ratings

Cool App


I think it's a good app, there is only three backgrounds but if you love h20 it's worth the 2$, it makes sound aswell when you type

H2O & Mako Mermaids Forever

Once Upon a Time-Disney

Fix the app so that it works right, also add more keyboards based on Mako Mermaids and on outer space, specifically the moon and earth.

crap!!! doesnt work!!


takes forever to load!! and it doesnt want to work!! the obly thing it does is does the loading symbol then says it has a problem!!! dont buy it!! its not worth $2!! if it doesnt get fixed ill delete it and demand a refund!!


Radtastical, Inc.
15.2 MB
Requires iOS 8.1 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2014 Radtastical Inc.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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