Grammarly popularized the "fix my writing everywhere" idea, and it's still a solid, mature product. Spellro takes a narrower, more transparent approach: free correction powered by your own Groq API key, plus a built-in shortcut expander Grammarly doesn't offer. Here's how they actually compare.
| Feature | Spellro | Grammarly |
|---|---|---|
| Price | Free (bring your own Groq key) | Free tier, plus $12–$25/mo Premium |
| Grammar & spelling correction | Yes | Yes |
| Works on any text field | Yes | Yes |
| Built-in shortcut / text expander | Yes | No |
| Bulk shortcut import/export (Excel) | Yes | Not applicable |
| Tone rewriting & style suggestions | Basic (via custom notes) | Yes, extensive |
| Plagiarism checker | No | Premium only |
| Requires account / sign-in | No | Yes |
| Where your text is processed | Directly to Groq's API, your own key | Grammarly's own servers |
| "Time saved" tracking | Yes, built in | No |
Where Spellro wins
- Cost. No subscription — you use your own free Groq API key rather than paying a monthly fee for core corrections.
- Shortcuts. Grammarly has no equivalent to Spellro's text expander, so you'd need a separate tool (like TextExpander or aText) alongside Grammarly if you want both.
- Transparency. Spellro's privacy model is simple to state precisely: your text goes to Groq using your key, never to a Spellro server, because there isn't one. See the full privacy policy.
Where Grammarly wins
- Depth of style feedback. Grammarly's tone detector, clarity scoring, and vocabulary suggestions are more elaborate than what a single correction prompt can offer.
- Maturity and integrations. Grammarly has desktop apps, a Word/Outlook add-in, and years of refinement across platforms beyond the browser.
- Plagiarism detection. Useful for students and academic writing — Spellro doesn't attempt this.
Bottom line
If you want a free, no-subscription grammar fixer that also replaces a separate text-expander app, Spellro covers both in one lightweight extension. If you need deep tone/style coaching or plagiarism checks and don't mind paying for them, Grammarly's Premium tier goes further. Nothing stops you from running both side by side, either.
Curious how Spellro stacks up against other tools too? See our roundup of Grammarly alternatives for a broader field.