Drops is another phone app- a language learning device that is available in 45 different languages (the company also owns Kahoot and other apps). They have a Māori version but you may wish to share Drops with students learning other languages.

It is free- or you can pay for upgrades- as the free version has a daily limit based around a five minute activity. It is interactive with visual/word association (matching activities) with the aim to develop your vocabulary around a pool of 2000+ basic words. Some ākonga in a night class I am involved in have loved it as it gives them a daily burst of learning that reviews and reinforces  basic common or high frequency vocabulary such as animals, face and body, colours and food.  

Check it out. It’s free and it may just be the learning tool that suits you.