AI assistants most often recommend Grammarly for grammar checkers in 🇩🇪 Germany (Deutsch), naming it in 100% of the buyer questions we tested, followed by LanguageTool and Reverso Spell Checker. We asked an AI model the questions buyers ask about grammar checkers and tallied which brands it named most — "share of voice" in AI answers, who AI recommends when no human is watching.
| # | Brand | AI share of voice |
|---|---|---|
| 1 | Grammarly | 6/6 (100%) |
| 2 | LanguageTool | 6/6 (100%) |
| 3 | Reverso Spell Checker | 5/6 (83%) |
| 4 | Reverso Grammatik | 1/6 (17%) |
Method: 6 representative buyer questions via a large language model, 🇩🇪 Germany (Deutsch). Updated 10/8/2026. A proxy for how AI assistants describe this category.
Is your brand missing — or want to climb the AI rankings?
Check your brand's AI visibility free →