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ZIP Code API VS Strong.app

Compare ZIP Code API VS Strong.app and see what are their differences

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ZIP Code API logo ZIP Code API

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

Strong.app logo Strong.app

Strenght training logger.
  • ZIP Code API Landing page
    Landing page //
    2026-05-21

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 true spatial polygon intersection. Returns ZIPs/FSAs within range, with per-result pct_inside overlap percentage for spatial queries
  • Unified lookup endpoint — accepts US ZIP, ZIP+4, Canadian FSA, full Canadian postal codes, or latitude/longitude inputs
  • Autocomplete/typeahead — cities, counties, metros, states, FSAs, ZIPs
  • Point-to-point distance — between any two postal points
  • Census ACS demographics — 2011–2024, 542 fields per ZIP across income, education, housing, social, and economic profiles
  • Boundary lookups — Census tracts, congressional districts, state legislative areas, school districts — with computed intersection percentages per ZIP

What makes it different

  • Licensed commercial data — not commodity or scraped sources
  • Canadian postal coverage — most peers in this space are US-only
  • True spatial radius — not just centroid haversine
  • 14 years of historical ACS depth via API — unusual outside of raw Census downloads
  • One endpoint for all of North America — no country-detection or input-routing logic to maintain on the client side

Pricing

  • Free — 2,500 lookups/day, no credit card required, no expiry
  • Developer — $49/mo, 100K credits, 300/min
  • Professional — $149/mo, 350K credits, 300/min
  • Business — $499/mo, 1.5M credits, 600/min
  • Credit packs — one-time, from 25K ($19) up to 2M ($799)

Resources

  • Strong.app Landing page
    Landing page //
    2021-09-30

ZIP Code API features and specs

  • Comprehensive ZIP Code Data
    The ZIP Code API from zip-codes.com provides extensive data including ZIP code details, city information, state data, and geographic coordinates, making it a thorough resource for location-based lookups.
  • Multiple Lookup Options
    The API supports various types of lookups including ZIP code to city/state, city/state to ZIP code, distance calculations between ZIP codes, and radius searches, offering flexible querying capabilities.
  • Easy Integration
    The API uses standard REST-based HTTP requests and returns data in commonly used formats like JSON and XML, making it straightforward to integrate into most applications and programming languages.
  • Distance and Radius Calculations
    The API includes built-in functionality for calculating distances between ZIP codes and finding ZIP codes within a specified radius, which is valuable for store locators, shipping estimates, and proximity-based features.
  • Well-Documented Endpoints
    The API provides clear documentation for its various endpoints and parameters, helping developers understand available features and implement them correctly without extensive trial and error.

Strong.app features and specs

  • User-Friendly Interface
    Strong.app offers an intuitive and clean user interface that makes it easy for users to navigate and use the app effectively.
  • Comprehensive Workout Tracking
    The app allows users to track various aspects of their workouts, including sets, reps, weight, and rest times, enabling detailed progress monitoring.
  • Customizable Workout Routines
    Users can create and customize their own workout routines, which allows for flexibility and personalization in their fitness plans.
  • Extensive Exercise Library
    Strong.app includes a large database of exercises with descriptions and animations, helping users perform movements correctly and discover new exercises.
  • Progress Visualization
    The app provides charts and graphs to visualize progress over time, helping users stay motivated and track their improvements.
  • Cloud Synchronization
    Workout data is synced across devices via the cloud, ensuring that progress is always up-to-date and accessible from different platforms.

Possible disadvantages of Strong.app

  • Cost
    While Strong.app offers a free version, access to premium features requires a subscription, which might be a deterrent for budget-conscious users.
  • Limited Integration
    The app has limited integration with other fitness and health tracking apps, which could be a drawback for users who want a more interconnected fitness ecosystem.
  • Data Entry
    Manual entry of workout data can be time-consuming, particularly for users performing complex routines with multiple exercises.
  • Learning Curve
    New users may experience a learning curve in getting accustomed to all the features and functionalities Strong.app offers.
  • No Guided Workouts
    The app lacks guided workout sessions, which might be a limitation for beginners who prefer step-by-step instructions.

Analysis of ZIP Code API

Overall verdict

  • ZIP Code API from zip-codes.com is a solid, reliable choice for developers and businesses needing accurate US and Canadian postal code data, offering a straightforward RESTful interface with regularly updated databases.

Why this product is good

  • Provides accurate and frequently updated ZIP code, city, state, and geographic data
  • Offers a simple RESTful API that is easy to integrate into web and mobile applications
  • Supports features like ZIP code lookup, radius search, and distance calculations
  • Includes both US ZIP codes and Canadian postal codes for broader coverage
  • Backed by an established data provider with a long track record in postal data

Recommended for

  • Developers building address validation or autofill features
  • E-commerce platforms needing shipping and location-based calculations
  • Businesses performing geographic or radius-based store locators
  • Applications requiring reliable US and Canadian postal data
  • Marketing and logistics teams that need regional or demographic targeting

ZIP Code API videos

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Strong.app videos

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12 Strong - Movie Review

More videos:

  • Review - 12 Strong Movie Review from a Former Action Guy
  • Review - 12 STRONG MOVIE REVIEW (Starring Chris Hemsworth and Michael Shannon)
  • Review - THE BEST WORKOUT TRACKING APP 2018 -- "Strong"

Category Popularity

0-100% (relative to ZIP Code API and Strong.app)

ZIP Code API

Strong.app

Zip Lookup
100 100%
Zip Lookup
0% 0
Health And Fitness
0 0%
Health And Fitness
100% 100
APIs
100 100%
APIs
0% 0
Sport & Health
0 0%
Sport & Health
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare ZIP Code API and Strong.app

ZIP Code API Reviews

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Strong.app Reviews

9 Best Weightlifting Apps for Strength Training 2023 – Tried & Tested
The aptly named “Strong” is a simple but effective weightlifting app, offering an intuitive way to track and record your workouts. Available on Apple Watch as well as mobile devices, its value proposition is quite simple… keep it simple.
Source: fitnessdrum.com
10 best fitness tracker apps for Android
Strong: Exercise Gym Log is a gym log similar to FitNotes. You can input all of your exercise routines and track them over time. It includes some unique tools like a warm-up calculator and tips on how to improve strength from your previous numbers. It has a few extra features from something like FitNotes, but you sacrifice a little bit of ease of use in the process. The UI...
Source: www.androidauthority.com

Social recommendations and mentions

Based on our record, Strong.app seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

ZIP Code API mentions (0)

We have not tracked any mentions of ZIP Code API yet. Tracking of ZIP Code API recommendations started around May 2026.

Strong.app mentions (3)

  • Workout Tracker
    I'm using Strava to track endurance work and strong.app for lifting. I'm pretty happy with Strong, but it is a subscription app if you want to save more than three custom workout routines (they also have some of the popular beginner programs pre-populated). Source: over 4 years ago
  • How to lose weight tho you hate intense workouts?
    You should all workouts with a app like strong.app or any other you find. Fitbod also seems to have good stuff now. Check their reviews etc. Source: over 4 years ago
  • I made a community sourced fitness routine database
    Looks like a great app! I run 5/3/1 and this is perfect. Currently I use https://strong.app but I'd love to see a way to see my weekly volume per muscle group. Is that something you are planning to add on Hardy? - Source: Hacker News / about 5 years ago

What are some alternatives?

When comparing ZIP Code API and Strong.app, you can also consider the following products

Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.

Hevy - Simple workout logging, insightful analytics, and a growing community of gym athletes.

Zipcodestack - Free Zip Code API - Free Postal Code Validation | Zipcodestack

Fitbod - Personalized Strength-Training powered by Machine Learning

PostalDataPI - The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

MyFitnessPal - Track the number of calories that you consume each day with MyFitnessPal. The app also lets you create a diet and track the exercise that you complete each day whether it's walking, running or some other type of program.

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