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Melissa Data Quality
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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Any.DO
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Things is an easy to use task manager.

Which is more popular?
Based on our record, Things seems to be more popular. It has been mentioned 58 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | isvalid.dev | culturedcode.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Germany |
| 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 Things 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
Why this product is good
Recommended for
Things is ideal for individuals who are deeply integrated into the Apple ecosystem and appreciate a minimalist design approach. It's perfect for users who prefer a straightforward, no-frills task management system that emphasizes ease of use, efficiency, and aesthetic appeal.
Walkthroughs and reviews on video.
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Brandon's Cult Movie Reviews: THINGS
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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 Things.
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 Things. 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
Things 3 is a multi-award-winning personal task manager that assists you in keeping track of your tasks. The environment of the application is attractive with a fresh new look, delightful integrations, and powerful...
Things 3 is one of the few to-do apps that's not subscription based, and it costs $9.99 to purchase. Things 3 is also available for Mac and iPad, though each app must be purchased individually.
Recommendations tracked on public social media and blogs since March 2021.


Tracking IsValid.dev since Apr 2026.
Correct: https://culturedcode.com/things/ Looks like the different apps (desktop, mobile, iPad) have different prices, but all are one-time payments of $10-$50. - Source: Hacker News / over 1 year ago
Things 3is an award-winning task management application known for its clean, elegant interface and intuitive usability. It employs a minimalist design style, allowing users to easily add, organize, and view tasks, helping individuals... - Source: dev.to / almost 2 years ago
How badly do Twos want to SEO rank on searches for Things? https://culturedcode.com/things/. - Source: Hacker News / almost 2 years ago
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Official company data from 50+ European business registers plus GLEIF LEI — one REST API for KYB, compliance and firmographic enrichment
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Remember The Milk is a task and time management application for mobile devices.
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