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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.

Which is more popular?
Based on our record, Zapier seems to be more popular. It has been mentioned 44 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | isvalid.dev | zapier.com |
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| Company | — | Startup from the United States |
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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),...
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As answered by people managing IsValid.dev and Zapier.
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
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Teams usually start looking for Zapier alternatives for one of three reasons: task-based pricing starts to feel expensive, workflow logic becomes more complex than simple app-to-app automation, or internal teams need...
As someone who has spent years building SaaS products and automation-heavy systems, I’ve used Zapier quite extensively for quick integrations and operational workflows. It’s one of the most accessible tools for...
Zapier is a widely-used workflow automation tool that has gained popularity due to its user-friendly interface and extensive library of pre-built integrations. It enables users to create "Zaps," which are essentially...
Recommendations tracked on public social media and blogs since March 2021.


Tracking IsValid.dev since Apr 2026.
One of the biggest advantages of using Apify is that it also provides an API endpoint for every Actor. Using these endpoints, developers can easily integrate Actors with automation tools such as n8n, Make, and Zapier. Developers can also... - Source: dev.to / 5 months ago
When a new contact is created in your CRM, a webhook fires — a small HTTP POST containing the contact's data is sent to a URL you control. Your automation platform (Zapier, Make, or n8n) receives that payload, calls your enrichment API... - Source: dev.to / 5 months ago
Automation is key to reducing the time and effort spent on collecting and reacting to new data. Integration services such as Zapierhelp automate key workflows, such as real-time notifications, ensuring that you act on data quickly and... - Source: dev.to / 7 months ago
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