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Exstats VS assertpy

Compare Exstats VS assertpy and see what are their differences

Appark.ai
Free app market analytics tool for growth and competition insights. sponsored
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Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

Exstats logo Exstats

Analytics for Chrome, Edge, and Firefox extensions in one dashboard. Track installs, ratings, reviews, and search rankings across 360,000 extensions, updated daily.

assertpy logo assertpy

A straightforward assertion library for Python.
  • Exstats Store Trends
    Store Trends //
    2026-05-16
  • Exstats Product Dashboard
    Product Dashboard //
    2026-05-16
  • Exstats Extension Explorer
    Extension Explorer //
    2026-05-16
  • Exstats Keyword Tracking
    Keyword Tracking //
    2026-05-16

Most browser extension developers ship the same product to Chrome, Edge, and Firefox, then try to track its performance across three separate developer dashboards, three different review feeds, and three sets of keyword rankings. The data is fragmented, history is short, and there is no easy way to compare a release against a competitor over time.

Exstats fixes this by grouping the Chrome, Edge, and Firefox versions of an extension into one product view, alongside the competitors you want to watch. It tracks daily changes in installs, ratings, reviews, category rank, and search rank, then keeps up to a full year of history so weekly and monthly trends are visible at a glance. Email and Slack alerts fire on rating drops, rank shifts, and competitor updates so a regression does not sit unnoticed for a week.

Beyond your own products, the Extension Explorer indexes 360,000+ extensions with 30+ searchable fields and exportable CSV or XLSX, the Keyword Tracker suggests AI-generated keyword ideas and tracks rank by store, and the Store Trends dashboard reports category growth, rating distributions, and review activity across each store.

  • assertpy Landing page
    Landing page //
    2022-11-06

Exstats

Website
exstats.com
Pricing URL
Official Exstats Pricing
$ Details
freemium
Platforms
Web
Release Date
2025 January
Startup details
Country
United States
Edit details

assertpy

Website
github.com
Pricing URL
-
$ Details
-
Platforms
-
Release Date
-
Categories
#Testing #Python
Edit details

Exstats features and specs

  • Supported stores
    Chrome Web Store, Microsoft Edge Add-ons, Firefox Add-ons
  • Database size
    280,000+ extensions, 6M+ reviews
  • Data refresh
    Daily
  • Historical data
    Up to 1+ year on Business plan
  • Product Dashboard
    Track your listings across all three stores in one view with ratings, users, reviews, and rank
  • Competitor tracking
    Side by side comparison with metrics, reviews, and version updates
  • Keyword tracking
    Daily rank checks with 1D, 7D, 30D deltas and full rank history
  • AI keyword suggestions
    Built in keyword discovery powered by AI
  • Extension Explorer
    Searchable market browser with 30+ fields, filters, and daily deltas
  • Store Trends
    Market level charts for category growth, rating distribution, review activity, and developer counts
  • Alerts
    Email and Slack notifications on ranking, rating, and competitor changes
  • Data export
    CSV and XLSX up to 5,000 rows

assertpy features and specs

  • Fluent API
    Assertpy offers a fluent API that makes assertions more readable and expressive, enabling developers to write assertions in a natural language style that is easy to understand.
  • Chainable Assertions
    It allows for chainable assertions, enabling multiple checks to be performed in a single line of code, thereby reducing verbosity and enhancing clarity.
  • Comprehensive Assertion Methods
    The library provides a wide range of built-in assertion methods, catering to various types of data validations, such as checking for size, type, value, and more.
  • Extensibility
    Assertpy supports extending its functionality by defining custom assertions, allowing developers to tailor it to their specific needs.
  • Pythonic
    Designed with Pythonic principles in mind, Assertpy fits seamlessly into Python projects, enabling idiomatic and consistent code style.

Possible disadvantages of assertpy

  • Learning Curve
    Developers new to the library may encounter a learning curve due to the distinct approach of using fluent and chainable assertions as opposed to traditional methods.
  • Limited by Python Version
    The library may have limitations in terms of compatibility with older versions of Python, requiring users to ensure their environment is up-to-date.
  • Performance Overhead
    The additional abstraction layer introduced by a fluent interface might introduce some performance overhead, especially in performance-critical or resource-constrained environments.
  • Less Community Support
    Compared to more established testing libraries, Assertpy might have less community support and fewer resources available for resolving issues or getting help.
  • Dependency Management
    Using a third-party library introduces additional dependencies to manage, which could complicate project maintenance and compatibility.

Analysis of Exstats

Overall verdict

  • Exstats appears to be a useful analytics and statistics platform, but you should verify its current features, pricing, and reliability directly before committing, as independent details are limited.

Why this product is good

  • Provides data tracking and statistical analysis tools that can help users make informed decisions
  • Typically offers dashboards and reporting features for monitoring performance metrics
  • May integrate with existing workflows to centralize data insights
  • Can save time by automating data collection and visualization

Recommended for

  • Small to medium businesses looking to track performance metrics
  • Analysts and data-driven professionals who need statistical reporting
  • Website or app owners wanting to monitor traffic and user behavior
  • Teams seeking an affordable alternative to enterprise analytics suites

Analysis of assertpy

Overall verdict

  • assertpy is a well-regarded, lightweight assertion library for Python that provides a fluent, chainable API for writing readable and expressive test assertions, making it a solid choice for improving test clarity.

Why this product is good

  • Offers a fluent, chainable assertion syntax that makes tests more readable and self-documenting
  • Comprehensive built-in assertions for strings, numbers, lists, dicts, files, dates, and more
  • Produces clear, descriptive failure messages that speed up debugging
  • Lightweight with minimal dependencies and easy to integrate into existing test suites
  • Framework-agnostic, working seamlessly with pytest, unittest, and other test runners
  • Actively maintained open-source project with good documentation and community support

Recommended for

  • Python developers who want more readable and expressive test assertions
  • Teams using pytest or unittest looking to enhance assertion clarity
  • Projects that value descriptive failure messages for faster debugging
  • Developers coming from fluent assertion libraries in other languages (like AssertJ or Chai)
  • QA engineers and testers writing maintainable, self-documenting test code

Category Popularity

0-100% (relative to Exstats and assertpy)

Exstats

assertpy

Data Analytics
100 100%
Data Analytics
0% 0
Testing
0 0%
Testing
100% 100
Competitor Analysis
100 100%
Competitor Analysis
0% 0
Python
0 0%
Python
100% 100

Questions & Answers

As answered by people managing Exstats and assertpy.

What makes your product unique?

Exstats's answer

Exstats treats an extension as one product across stores, not as three separate listings on three sites. The Chrome, Edge, and Firefox versions sit in one row, and history, reviews, alerts, and competitor data flow from there.

What's the story behind your product?

Exstats's answer

Exstats started because developers shipping browser extensions kept running into the same wall. The Chrome Web Store, Edge Add-ons, and Firefox Add-ons each give publishers a siloed view with short history, no competitor data, and no way to compare a release against a rival over time. Teams that maintained extensions on more than one store ended up checking three dashboards a day and keeping competitor numbers in spreadsheets. We built Exstats so an extension and its store versions live in one place, with daily history, alerts, and competitor tracking built in.

Why should a person choose your product over its competitors?

Exstats's answer

Unified multi-browser view. Exstats is the only dashboard that groups the Chrome, Edge, and Firefox versions of an extension into one product, with shared history and shared alerts. Most analytics tools cover only the Chrome Web Store, or split the three stores across separate sites.

Full year of daily history. Stores show current numbers and a short trail. Exstats keeps daily snapshots for up to a year so weekly and monthly trends, rating regressions, and competitor launches are visible at a glance.

Reviews from every store in one table. Chrome, Edge, and Firefox reviews sit in one sortable, filterable table, so a developer can read a week of feedback without rotating between three dashboards.

Keyword tracking with AI suggestions. Search rank is tracked per store with daily change indicators, and the keyword tool suggests new keywords from competitor listings rather than expecting the developer to bring a complete list.

How would you describe the primary audience of your product?

Exstats's answer

Exstats is built for the people shipping and growing browser extensions.

The core audience is independent extension developers and small product teams who need one place to watch installs, ratings, reviews, and keyword rank for their extensions, on whichever stores they publish to.

A second audience is extension growth and marketing specialists who track competitor launches, rating shifts, and category trends on behalf of clients and need a single view across Chrome, Edge, and Firefox rather than three separate workflows.

A third audience is product and engineering teams at companies whose extension is a meaningful acquisition or retention surface, who need daily alerts, exportable data, and API access for internal dashboards.

User comments

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What are some alternatives?

When comparing Exstats and assertpy, you can also consider the following products

ChromeStats - Compare and analyze Chrome extensions and Android Apps

grappa - grappa is an declarative, verbose, and expressive assertion library for Python.

ExtPose - Optimize your Chrome extension to get more installs

Extension Ranker - Boost your Chrome Extension ranking with the help of Extension Ranker โ€” driving more impressions, installs, and sustainable user growth.

CRX4Chrome - An alternative source of extensions for Chromium based browsers.

CRX Extractor - Get any Chrome Extension source code. Learn and hack!

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