This is an AppSumo issue. Can you please share your AppSumo account email address with us at [email protected] so we can ask them to investigate the problem?
We found out that AppSumo had disabled the add-on after our campaign ended which is why the option wasn't appearing for you. We've since asked them to turn it back on and they've confirmed it should be live now.
You can follow the steps listed here to complete the purchase: https://zcal.co/upgrade-appsumo-business-plan
1.) Currently, I have a small team. How would I benefit from tier 3?
2.) Im looking to provide your software as a service to my clients. However, Im not sure if I'm limited to 50 clients because tier 3 have 50 user seats. Please explain
3.) I will purchase the business add-on, but Im not which tier to purchase. Can you clarify how users are managed within your software?...
Founder Team
Gurtaj_zcal
Feb 11, 2026
A: Hi! To answer your questions:
To help you get the most out of zcal, here are concise answers to your questions:
1.) Tier 3 is the highest capacity license, providing 50 user seats. It is designed for growth, allowing you to scale your team or manage a high volume of client accounts without needing to upgrade your base license later.
2.) 50 user seats are included in Tier 3. Beyond that you...
Hello. Is it possible to survey the prospects (a few questions) before showing the calendar and the available timeslots ? Thank you
Founder Team
Gurtaj_zcal
Feb 11, 2026
A: Hi!
Currently, it isn't possible to show a survey before your available timeslots. However, this is definitely on our long-term roadmap as we look to improve our pre-meeting qualification tools.
In the meantime, most users handle this by adding Custom Questions to the booking flow. These appear immediately after the prospect selects a time, ensuring you still get the data you need before the...
Q: Business Plan features
Is there a way to upgrade to Business Plan features right now? I see that appear Sold out. Thanks
Gurtaj_zcal
Mar 2, 2026A: AppSumo disabled the add-on after our campaign ended. We've since asked them to turn it back on and they've confirmed it should be live now.
You can follow the steps listed here to complete the purchase: https://zcal.co/upgrade-appsumo-business-plan
Please contact AppSumo support if you don't see the add-on on your AppSumo Products page.
Share zcal
Q: I have a Tier 3 license. Can I get the add-on?
I want to buy the add-on but cannot do so when I go into the 'change plan' option of my existing license in appsumo. How can I get this resolved?
Gurtaj_zcal
Feb 12, 2026A: Hi! Yes you can purchase the add-on separately by following these steps: https://zcal.co/upgrade-appsumo-business-plan
Share zcal
That does not work. I am from a previous campaign of yours, before you had the add-on option. It does not give me a window to add the add-on.
Verified purchaser
This is an AppSumo issue. Can you please share your AppSumo account email address with us at [email protected] so we can ask them to investigate the problem?
Verified purchaser
We found out that AppSumo had disabled the add-on after our campaign ended which is why the option wasn't appearing for you. We've since asked them to turn it back on and they've confirmed it should be live now.
You can follow the steps listed here to complete the purchase: https://zcal.co/upgrade-appsumo-business-plan
me the same
Verified purchaser
I also need to purchase the addon. Thanks
Verified purchaser
AppSumo disabled the add-on after our campaign ended. We've since asked them to turn it back on and they've confirmed it should be live now.
You can follow the steps listed here to complete the purchase: https://zcal.co/upgrade-appsumo-business-plan
Please contact AppSumo support if you don't see the add-on on your AppSumo Products page.
Q: CalDAV connection outside of iCloud?
Can you connect a CalDAV calendar with an app password that's not in Apple, Google, or Outlook?
Gurtaj_zcal
Feb 23, 2026A: Hi - currently we only support Apple CalDAV connections. Adding support for other CalDAV connections is on our long term roadmap.
Share zcal
Q: Software Clarification Questions
Hello Support Team,
1.) Currently, I have a small team. How would I benefit from tier 3?
2.) Im looking to provide your software as a service to my clients. However, Im not sure if I'm limited to 50 clients because tier 3 have 50 user seats. Please explain
3.) I will purchase the business add-on, but Im not which tier to purchase. Can you clarify how users are managed within your software?...
Gurtaj_zcal
Feb 11, 2026A: Hi! To answer your questions:
To help you get the most out of zcal, here are concise answers to your questions:
1.) Tier 3 is the highest capacity license, providing 50 user seats. It is designed for growth, allowing you to scale your team or manage a high volume of client accounts without needing to upgrade your base license later.
2.) 50 user seats are included in Tier 3. Beyond that you...
Share zcal
Q: Survey before showing calendar
Hello. Is it possible to survey the prospects (a few questions) before showing the calendar and the available timeslots ?
Thank you
Gurtaj_zcal
Feb 11, 2026A: Hi!
Currently, it isn't possible to show a survey before your available timeslots. However, this is definitely on our long-term roadmap as we look to improve our pre-meeting qualification tools.
In the meantime, most users handle this by adding Custom Questions to the booking flow. These appear immediately after the prospect selects a time, ensuring you still get the data you need before the...
Share zcal