kitio.aiRespondable vs Hiwriter
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Hiwriter is completely free, while Respondable is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Reply likelihood prediction
- Tone and politeness feedback
- Real-time writing advice
- Built into Boomerang for Gmail
- Email draft generation
- Thread-aware replies
- Tone and style selector
- Built-in translation
- Regenerate variations
| Feature | Respondable | Hiwriter |
|---|---|---|
| Best for | Real-time email coach in Gmail that predicts reply chances | Gmail add-on that drafts emails and replies with GPT |
| Category | Writing | Writing |
| Pricing model | Freemium | Free |
| Starting price | See pricing page | Free |
| Free plan | Yes | Yes, fully free |
| Made by | Baydin | Rebump |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Hiwriter is completely free, while Respondable is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Respondable
- Feedback while you type
- Explains why a score changed
- Comes with Boomerang's other Gmail tools
- Works only with Gmail
- Gives advice rather than rewriting text
- Requires installing the Boomerang extension
Hiwriter
- Works inside Gmail on mobile too
- Translates drafts before sending
- Free to install
- Only works with Gmail
- Runs on the older GPT-3.5 model
- Improve feature still marked as coming soon
Which one should you choose?
Choose Respondable if you want:
- Feedback while you type
- Explains why a score changed
- Comes with Boomerang's other Gmail tools
Watch out: works only with gmail.
Choose Hiwriter if you want:
- Works inside Gmail on mobile too
- Translates drafts before sending
- Free to install
Watch out: only works with gmail.
Respondable vs Hiwriter FAQ
What is the difference between Respondable and Hiwriter?
Respondable: Real-time email coach in Gmail that predicts reply chances. Hiwriter: Gmail add-on that drafts emails and replies with GPT. Both are writing tools.
Is Respondable or Hiwriter cheaper?
Hiwriter is completely free, while Respondable is freemium.
Do Respondable and Hiwriter have free plans?
Respondable: Yes. Hiwriter: Yes, fully free.
Who makes Respondable?
Respondable is made by Baydin, based in United States.
Who makes Hiwriter?
Hiwriter is made by Rebump.
Which should I choose, Respondable or Hiwriter?
Choose Respondable if you value feedback while you type and explains why a score changed. Choose Hiwriter if you value works inside gmail on mobile too and translates drafts before sending.