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Codewars VS NumberBroom

Compare Codewars VS NumberBroom and see what are their differences

Codewars

Achieve code mastery through challenge.

Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
NumberBroom

Scrub phone lists for TCPA litigators, line type and carrier. Pay per list, no subscription. Preview 20 rows free.

Rating
0 reviews
Pricing
Freemium $0.2 (Per phone number, $5 minimum, no subscription)
Alternatives Is it good?
FlexiQuiz
FlexiQuiz is a powerful online test generator that enables you to create engaging online quizzes, tests, or exams in minutes. Choose from 100's of features to create a customized quiz that meets your objectives for business, education, or fun. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Codewars seems to be more popular. It has been mentioned 160 times since March 2021.

social mentions
160 vs 0
Online Learning popularity
100% vs 0%
alternatives listed
240+ vs 10

Base details

Website, pricing, platforms and company facts side by side.

Codewars
NumberBroom
Website codewars.com numberbroom.com
Pricing
Open source
Freemium $0.2 (Per phone number, $5 minimum, no subscription) Official pricing
Platforms —
Web REST API MCP
Company — Startup from the United States · 1 - 9 employees · 2026
Listed in
Online Learning Online Courses Online Education Education +1
TCPA Validation Carrier Lookup Phone Number Verification Phone Validator Phone Validator API Phone Number Validation Phone Lookup +4

About Codewars and NumberBroom

In their own words, as submitted to SaaSHub.

Codewars
NumberBroom

No description of Codewars yet.

NumberBroom scrubs US phone lists before you call or text them. Upload a CSV, Excel or PDF file, or paste the numbers. Every number is checked against current carrier data for line type (mobile, landline or VoIP), carrier and recent activity, and known TCPA litigators are removed. You download...

Read more about NumberBroom

Features and specs

What each product offers, as listed by its team.

Codewars 5 features
NumberBroom 8 features
  • Wide Range of Challenges
    Codewars offers a broad spectrum of coding challenges ranging from easy to very difficult, catering to all skill levels.
  • User Engagement
    The platform encourages community interaction through comments, user-submitted challenges, and solutions, fostering a collaborative learning environment.
  • Multiple Languages
    Codewars supports a variety of programming languages, allowing users to practice and improve skills in their language of choice.
  • Gamification
    The use of a ranking system, badges, and honor points adds a gamified layer to the learning process, making it more engaging and motivating.
  • Detailed Solutions
    After solving a challenge, users can view multiple solutions from others, offering a range of approaches and insights into problem-solving.

Possible disadvantages

  • Steep Learning Curve
    Beginners might find some challenges too difficult at first, which can be discouraging without proper guidance or learning resources.
  • Quality Variability
    The quality of user-submitted challenges can be inconsistent, meaning not all katas are equally useful or well-designed.
  • Limited In-Depth Learning
    While great for practice, Codewars does not provide comprehensive tutorials or in-depth explanations, which are often needed for mastering complex concepts.
  • Time Consumption
    The addictive nature of the platform can lead to spending excessive time on solving challenges, potentially detracting from other learning activities.
  • TCPA Litigator
    Known TCPA litigators removed from every list
  • Line Type Check
    Mobile, landline or VoIP (fixed or non-fixed) for each number
  • Carrier Lookup
    The carrier serving each number today, from current routing data
  • Disconnected Detection
    An activity score flags numbers that look disconnected
  • File Upload
    Upload CSV, Excel or PDF, or paste numbers; every original column is kept
  • Free Preview
    Scrub 20 rows of your list free before you pay
  • Screening Record
    A dated record of what each job checked and removed
  • REST API and MCP
    Single-number lookups at $0.20, prepaid, plus an MCP server for AI coding tools

Analysis

An editorial look at what each product does well and who it suits.

Codewars
NumberBroom

Overall verdict

  • Yes, Codewars is a valuable resource for programmers looking to enhance their problem-solving skills and gain proficiency in various programming languages.

Why this product is good

  • Codewars is considered good due to its extensive library of coding challenges (kata) that cater to multiple programming languages. It promotes learning through practice, allowing users to improve their coding skills by solving increasingly complex problems. The platform also encourages community engagement by allowing users to create their own challenges and interact with solutions from other programmers.

Recommended for

    Codewars is recommended for beginner to advanced programmers who enjoy learning through practice and are interested in improving their algorithmic thinking and coding skills in a gamified environment. It is particularly beneficial for those preparing for coding interviews or seeking to reinforce their programming knowledge in a fun and interactive way.

No analysis of NumberBroom yet.

Videos

Walkthroughs and reviews on video.

Codewars 2 videos + Add
NumberBroom 0 videos + Add

Codewars Review & Tips

More videos

  • - Practising Programming | Codewars Intro

No NumberBroom videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Codewars
NumberBroom
100% 100%
Online Learning
0% 0%
0% 0%
TCPA Validation
100% 100%
100% 100%
Online Education
0% 0%
0% 0%
Phone Number Verification
100% 100%

User comments

Share your experience with using Codewars and NumberBroom. For example, how are they different and which one is better?

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Reviews and articles

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

Codewars no reviews yet
NumberBroom no reviews yet
  • LeetCode Alternatives: Top platforms for coding practice
    formation.dev · Apr 2024

    Edabit offers a learning experience similar to learning a new language, focusing on smaller and more frequent exercises that build proficiency over time. Like Codewars, Edabit provides many challenges that increase in...

  • Discover the Top Leetcode Alternatives
    codenquest.com · Jan 2024

    In conclusion, while Leetcode remains a valuable resource for coders, the platforms listed above offer varied approaches to learning and improving coding skills. Whether you're drawn to the gamified learning...

  • 15 Best LeetCode Alternatives 2023
    rigorousthemes.com · Apr 2023

    This LeetCode alternative has excellent features for anyone looking to sharpen their coding skills. Codewars uses kata, which are small coding exercises that are community developed to help you master your language of...

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We have no reviews of NumberBroom yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Codewars 160 mentions
NumberBroom 0 mentions
  • Of recursion and backtracking
    Recently, I was working on a coding kata on codewars.com. Early on, I started thinking that a potential solution might utilize recursion, a concept that involves a function calling itself. However, I quickly realized that my grasp of... - Source: dev.to / almost 3 years ago
  • 4th year, about to fail an entire semester's worth of classes.
    Get more involved. Look into internships and junior SWE positions to get a sample of what you'd be applying for once you graduate. Solve coding challenges, start working on a portfolio of your personal works. I recommend codewars.com for... Source: almost 3 years ago
  • Beginner with C++ looking for direction
    I'd recommend to play around with some basic coding challenges on leetcode.com or codewars.com. If the course prepared you well you won't find this useful, but playing around with them will make sure that you are comfortable with basics... Source: about 3 years ago

View more

Tracking NumberBroom since Sep 2026.

Alternatives to Codewars and NumberBroom

When comparing Codewars and NumberBroom, you can also consider the following products.

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