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A powerful REST API for validating emails, IBANs, BIC/SWIFT codes, LEI, ISIN, credit cards, VAT numbers, phone numbers, and 70+ more validators. Free tier available.

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Whatagraph is the most visual multi-source marketing reporting platform. Built in collaboration with digital marketing agencies

Which is more popular?
Based on our record, Whatagraph seems to be more popular. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | isvalid.dev | whatagraph.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from The Netherlands · 10 - 19 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


IsValid is a validation API service for developers who need to quickly verify data formats without building their own validators. It offers 40+ endpoints covering financial identifiers (IBAN, BIC, ISIN, CUSIP), international standards (ISBN, ISSN), technology formats (UUID, JWT, QR codes),...
No description of Whatagraph 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
Overall verdict
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Recommended for
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Top 4 Whatagraph Features Released in 2019
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing IsValid.dev and Whatagraph.
IsValid.dev's answer
IsValid offers 70+ validators in a single API — covering financial identifiers (IBAN, BIC, ISIN, LEI), international standards (ISBN, ISSN), technology formats (UUID, JWT, QR codes), tax numbers (VAT, REGON, PESEL), credit cards, phone numbers, and more. No need to integrate multiple services for different data types.
IsValid.dev's answer
Most validation APIs focus on one category (email or phone). IsValid covers financial, regional, and technical formats all in one place with a consistent REST API. The free tier with 100 calls/day requires no credit card, and integration takes minutes.
IsValid.dev's answer
Developers and software teams building applications that handle user input, financial data, or international identifiers — particularly in fintech, e-commerce, and SaaS products.
IsValid.dev's answer
IsValid was built out of frustration with piecing together multiple validation libraries and services. The goal was a single, reliable API that handles the full range of data validation needs developers encounter in real-world applications.
IsValid.dev's answer
Next.js, Fastify, PostgreSQL, Docker
Share your experience with using IsValid.dev and Whatagraph. 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 IsValid.dev yet. Be the first one to post
Customers mainly use Whatagraph for tracking campaign results from various channels. The platform provides visualizations, reports, and data insights in the manner of leading your company’s success. It offers some...
Whatagraph is known as a reporting tool that allows you to compare and monitor the performance of various campaigns. It also allows you to transfer custom data from API and Google Sheets.
Recommendations tracked on public social media and blogs since March 2021.


Tracking IsValid.dev since Apr 2026.
I recommend pulling this easily into whatagraph.com through drag & drop functionality. Amazing integration depth, also! Source: over 5 years ago
Try whatagraph.com. Should do the job for you. Source: over 5 years ago
Hey everyone, Just like the title says that's what Whatagraph.com is - those of you who are looking to significantly improve your data aggregation, visualization, and reporting capabilities, I would love to invite you to our webinar... Source: over 5 years ago
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