
Postio.co.uk
Ideal postcodes
Fetchify
Smarty
Data8 UK
ZIP Code API
Data8 UK PredictiveAddress
The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

Supabase
Android Studio
AppWrite
Back4App
Xcode
Vercel
Socket.io
Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.

Which is more popular?
Based on our record, Firebase seems to be more popular. It has been mentioned 286 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | postaldatapi.com | firebase.google.com |
| Pricing | ||
| Company | Startup from the United States · 1 - 9 employees · 2026 | Startup from the United States |
| Listed in |
In their own words, as submitted to SaaSHub.


PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate — $0.000028 per query with no tiers or subscriptions. What you get back: Up to 18 metadata fields per postal code — city, state/region, coordinates,...
No description of Firebase 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
Walkthroughs and reviews on video.
PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
More videos
Is Firebase a Good Long Term Solution?
More videos
How often each product is chosen within a category, 0–100% relative to the other.


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External articles and on-site reviews we used to compare the two products.


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Firebase: Google’s longstanding BaaS platform. Popular for mobile and web backends, real-time data, and increasingly AI-assisted development through Firebase Studio. Strong for rapid app delivery, but more complex...
It proudly calls itself the “open-source Firebase alternative,” and for good reason. Supabase gives you the power of a PostgreSQL database, authentication, instant APIs, real-time subscriptions, and more – all without...
Data Export:Backup Your Data: Begin by creating backups of all your data stored in Firebase. This ensures you have a safe copy in case anything goes wrong during the migration.Export Data: Use Firebase's data export...
Recommendations tracked on public social media and blogs since March 2021.


Tracking PostalDataPI since Apr 2026.
Back in 2019, Google Firebase was becoming very popular. I was especially interested in the real-time capabilities — they had just launched Firestore and I wanted to give it a try. I thought it would be fun to build a small tool for my... - Source: dev.to / 6 months ago
Then you log into Firebase and see it: The dreaded red box. Your APNs certificates have expired. - Source: dev.to / 6 months ago
Persistence: Firebase for seamless Google Authentication and session management. - Source: dev.to / 7 months ago
When comparing PostalDataPI and Firebase, you can also consider the following products.

Fast UK address, email & phone validation APIs for developers. Official Royal Mail PAF data. Pay as you go, 100 free lookups.
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Android development environment based on IntelliJ IDEA
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Fetchify delivers fast, accurate address, email, phone and bank validation tools that help businesses capture clean, verified customer data, reduce failed deliveries and improve checkout experiences worldwide.
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Appwrite provides web and mobile developers with a set of easy-to-use and integrate REST APIs to manage their core backend needs.
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