Handwriting/Stylus
Letter School ($13.99)
I like this one because the fonts a close to our NZ font and you can easily choose which letter you want to focus on and it scaffolds correct letter formation.
https://play.google.com/store/apps/details?id=com.letterschool
Writing Wizard ($6.99)
Offers similar to Letter School and has tracking and words. You can add your own vocabulary list and record pronunciation so would be great for adding Te Reo Māori.
https://play.google.com/store/apps/details?id=com.lescapadou.tracing&hl=en
123s ABC
Recommended:The app allows students to practice drawing uppercase and lower case letters by tracing the template on the screen.
https://play.google.com/store/apps/details?id=com.teachersparadise.fingertracing001
Swype (free)
This very cool keyboard allows you to swipe over the keys rather than tap on them. Fast and innovative. You would need to know the layout of the QWERTY keyboard
https://play.google.com/store/apps/details?id=com.nuance.swype.dtc
Write (free)
Handwritten note taking and editing.
https://play.google.com/store/apps/details?id=com.styluslabs.write