Ok, these are the spelling apps DS loves:
1. V1- Word Family ($3)
2. V2- Make a Word ($3)
3. Abc1- Spelling Magic 1 (free)
4. ABc2- Spelling Magic 2 (free)
5. Abc3- Spelling Magic 3 (free)
1 and 2 separate out words by word family and cost $3 each. 3, 4, and 5 offer the option of using a digital moveable alphabet and sort words into groups based on theme (animals, outdoors, etc.) Personally, I'd try 1 and 3 first. If she likes those, then get 2, 4, and 5. The paid apps are nicer, IMO, but the freebies get the job done.
For simple math, the Bugs and Numbers/Buttons series is lovely. A great biology app is "The Human Body" in The Explorer's Library series by Tinybop for $3.
