Grammarly Business
iA Writer
| Feature | Grammarly Business | iA Writer |
|---|---|---|
| Pricing | From $15/mo | From $49.99/mo |
| Free Plan | ✗ No | ✗ No |
| Rating | 4.5 / 5 | 4.5 / 5 |
| Best For | enterprise, marketing-teams, content-creators, agencies | writers, bloggers, minimalists, focused-writers |
| Founded | 2009 | 2010 |
| Grammar Check | ✓ | ✗ |
| Tone Detection | ✓ | ✗ |
| Style Guides | ✓ | ✗ |
| Analytics | ✓ | ✗ |
| Plagiarism Detection | ✓ | ✗ |
| Brand Tones | ✓ | ✗ |
| Focus Mode | ✗ | ✓ |
| Markdown | ✗ | ✓ |
| Syntax Highlighting | ✗ | ✓ |
| Content Blocks | ✗ | ✓ |
| Publishing | ✗ | ✓ |
| Style Check | ✗ | ✓ |
✓ Grammarly Business Pros
- Real-time writing suggestions
- Team style guides
- Analytics dashboard
- Works across apps
✗ Grammarly Business Cons
- Expensive for large teams
- Occasional false positives
- Limited offline support
✓ iA Writer Pros
- Beautiful minimalism
- Focus mode
- Cross-platform
- One-time purchase
✗ iA Writer Cons
- Very minimal features
- No collaboration
- Limited formatting
The Verdict
Grammarly Business is built for enterprise and marketing teams, with a focus on grammar-check and tone-detection. iA Writer targets writers and bloggers and leads with focus-mode and markdown.
On pricing, Grammarly Business is the clear winner for budget-conscious users — starting at $15/mo compared to $49.99/mo for iA Writer. That $34.99/mo difference adds up quickly for growing teams.
Neither tool offers a free plan, so factor the subscription cost into your decision from the start.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.