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 Grammar 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 Grammar Checker | 3/6 (50%) |
| 4 | Reverso Spell Checker | 2/6 (33%) |
| 5 | Reverso Grammatik | 1/6 (17%) |
| 6 | Duden Korrektor | 1/6 (17%) |
Method: 6 representative buyer questions via a large language model, 🇩🇪 Germany (Deutsch). Updated 6/17/2026. A proxy for how AI assistants describe this category.
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