The Spelling Bee!
The Spelling Bee! is a spelling game suitable for all ages, it has spelling lists ranging from first grade through to high school level. It has 3 different modes to allow for a greater variety, these include:
Time Trial: spell as many words correctly in 60 seconds as possible
Zen Master: spell until you finish a spelling list (or quit the game)
Sudden Death: spell until you get a word wrong
There are over 2500 words loaded into The Spelling Bee!, so you can get straight into improving your spelling.
Special thanks to Ecem Afacan from the Noun Project for use of his "bee" icon.