Cool new addition to the latest update to Phraseology by Greg Pierce:

This update adds a cool new “Show Spelling Issues” option in syntax highlighter. When used, possible spelling errors (based on the same spell checking used by auto-correct) will be highlighted in red. Tapping on one triggers the suggestion menu for replacements. The spelling issue highlighting cannot be used at the same time as part of speech highlighting, so will disable other highlights when turned on.

With version 2.0, Phraseology (which was already a great app) turned into a powerful solution for writers who want to enhance their writing workflow on iOS. Today’s update brings a minor but important addition: when I write in Editorial, I keep spelling turned off because I want to reduce distractions as much as possible. Phraseology is meant for highlighting words, so adding native spell checking to the app makes sense.

Phraseology is $2.99 on the App Store.