
Calendly
Cal.com
zcal
SavvyCal
Acuity Scheduling
Google Calendar
Zencal
Optimize your schedule with custom booking pages and calendar integrations
Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

Which is more popular?
Based on our record, TidyCal seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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| Website | tidycal.com | zip-codes.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

Scheduling a meeting shouldn’t require endless rounds of email tag just to find a time that works for all your stakeholders. (“Next month is a no-go, too. Should we try for 3 p.m. CT next year?”) It’s hard enough to find work-life balance when you’re manually coordinating across time zones and...
API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
What each product offers, as listed by its team.

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

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Your calendar app for scheduling and booking meetings TidyCal
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using TidyCal and ZIP Code API. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

We use https://tidycal.com/ because you get a lifetime deal when you buy it and you can sync your calendar with it, so if you or your partners are already booked, it will not allow someone to book during that timeslot. Source: almost 4 years ago
Tracking ZIP Code API since May 2026.
When comparing TidyCal and ZIP Code API, 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.
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Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Cal.com (formerly Calendso) is the open source Calendly alternative.
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Free Zip Code API - Free Postal Code Validation | Zipcodestack
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zcal is the fastest way to schedule every meeting for Free and make it personal.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
Compare PostalDataPI to TidyCal or ZIP Code API: