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KeyAI vs Grammarly Keyboard
KeyAI and Grammarly Keyboard both promise to make writing on iPhone faster, but they take very different approaches. Here is the side-by-side breakdown of what each one actually does.
| Feature | KeyAI | Grammarly Keyboard |
|---|---|---|
| Works inside your keyboard | ✓ | ✓ |
| Number of AI tools | 10+ | ~2 |
| Tone change | ✓ | — |
| Translate 55+ languages | 55+ | 1 |
| Paraphrase | ✓ | — |
| Ask AI any question | ✓ | — |
| AI-generated replies | ✓ | — |
| Sends text only on tap | ✓ | — |
| Auto-hides on password fields | ✓ | ✓ |
| Supports 60+ keyboard layouts | 60+ | 30+ |
| Cost | $4.99/wk · $39.99/yr | Free + Premium $5.83/mo |
| Free trial | 3 days | 7 days |
Our verdict
Grammarly is excellent at one job — grammar. KeyAI does grammar plus 9 more AI tools, all from inside your keyboard, in 55+ languages. If you only ever fix typos, Grammarly is fine. If you want the full AI assistant inside every app, KeyAI is the upgrade.
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