
Calendly
Cal.com
TidyCal
SavvyCal
Acuity Scheduling
Doodle
Zencal
zcal is the fastest way to schedule every meeting for Free and make it personal.

NovoPsych
Digital Psychology assessments with research-backed UX for neurodivergent patients. Better completion rates, more comfortable patient experience, instant scoring, trend tracking with secured data hosting.

Which is more popular?
Based on our record, zcal seems to be more popular. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | zcal.co | clientforms.app |
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| Company | 2021 | โ |
| Listed in |
In their own words, as submitted to SaaSHub.


Say goodbye to cold, impersonal scheduling links. Use zcal to create beautiful, personalized booking pages that make a great first impression on your guests. It's 100% Free Forever ๐ฅ! If everyone agrees that scheduling links help save time, then why are they so universally unloved? Today most...
No description of ClientForms.app yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Zcal is recommended for individuals and professionals who frequently set up meetings or appointments, such as business professionals, freelancers, and entrepreneurs, as well as for teams and organizations that require a reliable and easy-to-use scheduling solution.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Meet zcal, the FREE personal Calendly alternative
More videos
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How often each product is chosen within a category, 0โ100% relative to the other.


As answered by people managing zcal and ClientForms.app.
ClientForms.app's answer:
Frontend: Next.js 15 (React 19), Tailwind CSS Backend: Supabase (PostgreSQL, Row-Level Security) Authentication: Clerk Payments: Stripe Hosting: Vercel (Sydney region) Database hosting: Supabase (Australian data residency)
ClientForms.app's answer:
Psychologists who assess ADHD and autism. Typically private practice, solo or small group (1-5 clinicians), currently using paper forms and spending hours on admin per assessment. They want something that works and is secure.
ClientForms.app's answer:
Neurodivergent-first design. Most digital forms just replicate paper online. ClientForms is built specifically for ADHD and autism patients - progress bars with time remaining (helps with time blindness), softer colours instead of harsh white, sticky headers so you always know where you are. The forms are designed to reduce anxiety and improve completion rates.
ClientForms.app's answer:
Most clinical software treats patients as an afterthought. ClientForms is designed specifically for neurodivergent users who are filling out the forms, progress indicators, time estimates, calmer colours, predictable layouts. One link, no signup required, works on any device. Patients just open and complete.
Share your experience with using zcal and ClientForms.app. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


I tried using https://cal.com for a bit but ended up just switching over to https://zcal.co and it has been great so far. All these other scheduling tools end up trying to do too much and always seem to end up a bit...
We have no reviews of ClientForms.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


>ended up just switching over to https://zcal.co and it has been great so far Wait wait wait. It can sync my Google and Outlook calendars into a single scheduling service, and they're not charging me anything? What's the catch here? - Source: Hacker News / almost 4 years ago
I've poked around a while ago at some Calendly alternatives (specifically was looking for something that was cheaper than Calendly with most of the basic features). I tried using cal.com for a bit but ended up just switching over to... - Source: Hacker News / almost 4 years ago
There's an even a freer alternative, not FOSS though. http://zcal.co It also allows connection to multiple calendars. - Source: Hacker News / almost 4 years ago
Tracking ClientForms.app since Dec 2025.
When comparing zcal and ClientForms.app, you can also consider the following products.

Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
Compare Calendly to zcal or ClientForms.app:

NovoPsych is a tool that is used for outcome monitoring via conducting psychological tests online.
Compare NovoPsych to zcal or ClientForms.app:

Cal.com (formerly Calendso) is the open source Calendly alternative.
Compare Cal.com to zcal or ClientForms.app:

Optimize your schedule with custom booking pages and calendar integrations
Compare TidyCal to zcal or ClientForms.app:

A scheduling tool both the sender and the recipient will love.
Compare SavvyCal to zcal or ClientForms.app:

Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Compare Acuity Scheduling to zcal or ClientForms.app: