Rigorous digital spelling program
I currently use MCT and Beast Academy for my 9 year old, and I'd like to add an A-tier, rigorous digital spelling program to our stack.
Based on my research, it looks like LOE is the most rigorous, and I like that it's based on Orton Gillingham methodology. However, I absolutely hate the dated and disorganized UI, and I find the lessons to be dull and slow.
The other online programs I am finding (Spellzone, Nessy, SpellingCity, Home Spelling Words, etc) are either gamified and / or word list based, which is not what I am looking for.
AAS seems good, but they don't offer a digital program. (We need digital because we can't get physical materials shipped to our country.)
Am I missing any other digital options that are based on a specific methodology, not just drills / quizzes?
For reference, my daughter is an advanced reader, neurotypical, and not dyslexic, but spelling does not come naturally to her, and she definitely needs a dedicated spelling program.