kitio.aiMartin vs Zentor
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Zentor has the lower starting price: about $15 a month, against $35 for Martin.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Inbox management
- Calendar scheduling
- Phone calls
- Reminders and to-dos
- Background tasks
- Scheduled recurring tasks
- Approval before sending
- Gmail, Notion and Slack access
- Drafts in your voice
- Persistent work memory
| Feature | Martin | Zentor |
|---|---|---|
| Best for | AI personal assistant for email, calendar, calls and reminders | AI assistant that runs recurring work inside Gmail, Notion and Slack |
| Category | Productivity | Productivity |
| Pricing model | Free trial | Free trial |
| Starting price | $35/mo | $14.99/mo |
| Free plan | No, 7-day trial | No, 3-day trial |
| Made by | Martin | Zentor |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Zentor has the lower starting price: about $15 a month, against $35 for Martin.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Pro
$14.99/mo
- 1,500 credits each month
- For a few tasks a week
Power
$49.99/mo
- 6,000 credits each month
- 20% more credits per dollar
Max
$149.99/mo
- 20,000 credits each month
- 33% more credits per dollar
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
Martin
- Many ways to reach it
- Handles calls and email
- Proactive briefings
- No free plan
- Background tasks need Pro
Zentor
- Works across many everyday apps
- Asks before anything goes out
- Low entry price
- Trial lasts only 3 days
- No permanent free plan
- Heavy users need the $149.99 tier
Which one should you choose?
Choose Martin if you want:
- Many ways to reach it
- Handles calls and email
- Proactive briefings
Watch out: no free plan.
Choose Zentor if you want:
- Works across many everyday apps
- Asks before anything goes out
- Low entry price
Watch out: trial lasts only 3 days.
Martin vs Zentor FAQ
What is the difference between Martin and Zentor?
Martin: AI personal assistant for email, calendar, calls and reminders. Zentor: AI assistant that runs recurring work inside Gmail, Notion and Slack. Both are productivity tools.
Is Martin or Zentor cheaper?
Zentor has the lower starting price: about $15 a month, against $35 for Martin.
Do Martin and Zentor have free plans?
Martin: No, 7-day trial. Zentor: No, 3-day trial.
Who makes Martin?
Martin is made by Martin, based in United States.
Who makes Zentor?
Zentor is made by Zentor.
Which should I choose, Martin or Zentor?
Choose Martin if you value many ways to reach it and handles calls and email. Choose Zentor if you value works across many everyday apps and asks before anything goes out.