All guides
Use Checker where writing happens
Every guide on iPhone writing, grammar correction, AI keyboards, and privacy — in one place.
AI Keyboard for iPhone ↗
Learn what an AI keyboard for iPhone is, how iOS keyboard extensions work, why Full Access…
Apple Autocorrect vs Checker ↗
Why Apple's autocorrect catches typos but not grammar, how spelling and grammar checking d…
How to Fix Grammar on iPhone ↗
Apple Keyboard, Grammarly, ChatGPT, AI keyboards, and browser tools compared for fixing gr…
Checker vs Grammarly ↗
A direct comparison between Checker, a lightweight iOS AI grammar keyboard, and Grammarly,…
Grammar Check vs Spell Check ↗
Grammar checkers and spell checkers solve different problems. Here's exactly what each one…
Keyboard Privacy Explained ↗
How iOS keyboard privacy actually works: what Full Access does and doesn't allow, whether …
How AI Grammar Correction Works ↗
A plain explanation of how AI grammar correction actually works: language models, context …