It looks like you're trying to sound out the word in a playful or phonetic way ("yooafuhl").
If you're asking whether "yooafuhl" is a useful feature — it isn't a real term. However, if you meant that or phonetic spelling is a useful feature in dictionaries or language apps, then yes: showing a word's pronunciation (like "ˈjuːs.fəl" → "yoo-sfuhl") helps learners say it correctly. yooafuhl