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

Anki
Quizlet
Brainscape
RemNote
Memrise
Mochi
Knowt
Cram is an app for Android, Windows and Apple devices that allows you to search for flashcards in a range of topics to study for an upcoming test or to learn new information. Read more about Cram.

Which is more popular?
Based on our record, Cram seems to be more popular. It has been mentioned 12 times 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 | zip-codes.com | cram.com |
| Pricing | — | |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

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...
No description of Cram yet.
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
Students who need to memorize information quickly, individuals preparing for exams, language learners, and anyone who prefers interactive learning methods through digital flashcards.
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AP World History Exam Cram Review (Pt. 1)
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using ZIP Code API and Cram. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

We have no reviews of ZIP Code API yet. Be the first one to post
Though Cram is free to use, there are some features that are only available in the premium version. You can contact them to know about the price. The complimentary premium version is available to members of National...
Cram is a fairly straightforward flashcard app with some interesting features for reviewing and studying your cards.
Cram is a fairly straightforward flashcard app with some interesting features for reviewing and studying your cards.
Recommendations tracked on public social media and blogs since March 2021.

Tracking ZIP Code API since May 2026.
This is what I did....lots of flash cards. I used cram.com, but most sites work. I strongly suggest making your own, though. Don't put everything on them, just put the things you're struggling with. It's way more efficient to just... Source: over 3 years ago
I used Cantrill's course, TutorialDojo's practice exams, and cram.com for flash cards. I used the practice exams to help me identify where I was weak, and I'd go back and study those topics in more depth. Also, whenever I got a... Source: over 3 years ago
Use flashcards. I used cram.com and made a bunch of cards to memorise stats, dates and quotes. Source: about 4 years ago
When comparing ZIP Code API and Cram, you can also consider the following products.

Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.
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Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
Compare Anki to ZIP Code API or Cram:

Free Zip Code API - Free Postal Code Validation | Zipcodestack
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Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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Find, create, and study SMART FLASHCARDS on any device. DOUBLE your learning speed using the most effective study system on the planet. Keep all your content in sync across Brainscape's website and your Android devices.
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