kitio.aiHowie vs Sixty AI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Howie starts at See pricing page and Sixty AI starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Email-based scheduling
- Availability checks
- Preference learning
- Rescheduling
- Calendar event creation
- Meeting briefings
- Agenda snapshots
- Inbox filtering
- Schedule change alerts
- Milestone reminders
| Feature | Howie | Sixty AI |
|---|---|---|
| Best for | AI scheduling assistant you CC on email to book meetings | AI assistant that preps briefings and tames your inbox |
| Category | Productivity | Productivity |
| Pricing model | Free trial | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | No, trial available | Yes |
| Made by | Howie | Sixty |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Howie starts at See pricing page and Sixty AI starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Howie
- No scheduling links needed
- Handles back-and-forth replies
- Learns your preferences
- Only works through email
- Paid service for most users
Sixty AI
- Briefings pull in past interactions
- Alerts only when your day is affected
- Covers email, calendar and contacts
- Pricing is not shown on the site
- Few integrations are listed
- Homepage is light on technical detail
Which one should you choose?
Choose Howie if you want:
- No scheduling links needed
- Handles back-and-forth replies
- Learns your preferences
Watch out: only works through email.
Choose Sixty AI if you want:
- Briefings pull in past interactions
- Alerts only when your day is affected
- Covers email, calendar and contacts
Watch out: pricing is not shown on the site.
Howie vs Sixty AI FAQ
What is the difference between Howie and Sixty AI?
Howie: AI scheduling assistant you CC on email to book meetings. Sixty AI: AI assistant that preps briefings and tames your inbox. Both are productivity tools.
Is Howie or Sixty AI cheaper?
Howie starts at See pricing page and Sixty AI starts at See pricing page. Check both pricing pages for current plans.
Do Howie and Sixty AI have free plans?
Howie: No, trial available. Sixty AI: Yes.
Who makes Howie?
Howie is made by Howie, based in United States.
Who makes Sixty AI?
Sixty AI is made by Sixty, based in United States.
Which should I choose, Howie or Sixty AI?
Choose Howie if you value no scheduling links needed and handles back-and-forth replies. Choose Sixty AI if you value briefings pull in past interactions and alerts only when your day is affected.