Software Alternatives, Accelerators & Startups

InterviewBit VS Calcumber

Compare InterviewBit VS Calcumber and see what are their differences

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.

InterviewBit logo InterviewBit

Learn and Practice on almost all coding interview questions asked historically and get referred to the best tech companies

Calcumber logo Calcumber

Calculate in a notebook and share — from everyday math to engineering.
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  • InterviewBit Landing page
    Landing page //
    2023-10-08
  • Calcumber Usefulness of units when calculating the weight of paper
    Usefulness of units when calculating the weight of paper //
    2026-07-25
  • Calcumber Calcumber interactively embedd on a web page
    Calcumber interactively embedd on a web page //
    2026-07-25
  • Calcumber Showcase from arithmetics to thermodynamics
    Showcase from arithmetics to thermodynamics //
    2026-07-25

Use variables, functions, and units and see results immediately. Add comments, copy calculations to apps like Word or Excel, or share them through an editable link. Calculate thermodynamic fluid properties with the integrated CoolProp library.

InterviewBit

$ Details
-
Platforms
-
Release Date
2015 January
Startup details
Country
India
State
Karnataka
City
Bengaluru
Founder(s)
Abhimanyu Saxena
Employees
100 - 249

Calcumber

$ Details
free
Platforms
Web Windows Linux Mac
Release Date
2025 June
Startup details
Country
Switzerland
State
Aargau
City
Staufen
Founder(s)
Samuel Hartmann
Employees
1 - 9

InterviewBit features and specs

  • Structured Learning Path
    InterviewBit offers a structured path for learning and practicing coding problems, which is particularly beneficial for users who prefer a guided approach.
  • Quality of Problems
    The platform contains a diverse set of high-quality problems that help users prepare for technical interviews efficiently.
  • Community and Discussion
    InterviewBit has a community where users can discuss problems and solutions, which can provide additional insights and help understand various approaches.
  • Progress Tracking
    The platform tracks user progress and performance, offering insights into strengths and areas needing improvement, which is great for focused learning.
  • Interview Preparation Focus
    InterviewBit is specifically designed for interview preparation, providing a curated experience tailored to the needs of job seekers aiming for technical roles.

Possible disadvantages of InterviewBit

  • Limited Language Support
    Compared to some competitors, InterviewBit supports fewer programming languages, which may limit its utility for users who prefer a language not offered.
  • User Interface Complexity
    Some users might find the interface less intuitive or more complex to navigate compared to other platforms, which can hinder the user experience.
  • Paid Content
    While many features are free, certain advanced content and courses require payment, which might not be ideal for users seeking entirely free resources.
  • Limited Non-Coding Resources
    InterviewBit primarily focuses on coding interviews, and the lack of resources for other aspects of the interview process, like behavioral interviews, might be a constraint.
  • Competition Emphasis
    The competitive aspect may pressure some users or create stress, as the platform encourages users to compete on leaderboards, which might not suit everyone.

Calcumber features and specs

  • 🌿 Naturally type expressions
    get immediate results
  • 🔗 Copy and share
    keep calculations editable with a link
  • 🧩 Variables and constants
    pi, e, G, mu0
  • 🧪 Scientific functions
    sin, acos, log, round, and more
  • ♨️ Thermodynamic fluid properties
    refrigeration, heat pumps, steam and air
  • 💡 Installation optional
    run directly in your browser
  • 📱 Multi-platform
    WebApp, Windows, more to come

InterviewBit videos

InterviewBit Academy: Learn to code & Pay Once You Get Job (Part 2) | ThingsToKnow

Calcumber videos

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

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Category Popularity

0-100% (relative to InterviewBit and Calcumber)
Online Learning
100 100%
0% 0
Math Calculators
0 0%
100% 100
Online Education
100 100%
0% 0
Math Solver
0 0%
100% 100

Questions & Answers

As answered by people managing InterviewBit and Calcumber.

Why should a person choose your product over its competitors?

Calcumber's answer:

  • Sharing calculations and embedding them in documents or web pages is perfect for education.
  • Natural unit support, just include them in your expression and Calcumber handles it.
  • Free and easy access to thermodynamic fluid-properties.

What makes your product unique?

Calcumber's answer:

  • Easy to use calculator notebook
  • From simple arithmetic to advanced engineering with units
  • Installation optional
  • Send calculation link with full privacy
  • Embed calculation templates, exercices and soultions in documents or interactively in web pages

What's the story behind your product?

Calcumber's answer:

When starting for a Master of Advances Study in Energy Systems, I was looking for a suitable state-of-the-art calculator. Then I built my own Calculator Calcumber and now the Eastern Switzerland University of Applied Sciences is using Calcumber for teaching students in thermodynamics.

How would you describe the primary audience of your product?

Calcumber's answer:

  • The notebook-style calculator is great for everybody who wants more than just a single line calculator.
  • The sharing and embedding features make it Calcumber very well suited for teachers and students. The power of consistently using units is shown immediatly.
  • Engineers will like the unit support, sharing calculations with collegues and if needed the built-in fluid properties calculation.

Which are the primary technologies used for building your product?

Calcumber's answer:

HTML, CSS, TypeScript, PWA, CoolProp

Who are some of the biggest customers of your product?

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare InterviewBit and Calcumber

InterviewBit Reviews

4 high-quality HackerRank alternatives (plus 7 honorable mentions)
InterviewBit is focused on sharing problems asked by FAANG. Pick from tracks ranging from programming, system design and databases. From there, you rack up points and coins while hammering away at over 300 questions.

Calcumber Reviews

We have no reviews of Calcumber yet.
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Social recommendations and mentions

Based on our record, InterviewBit seems to be more popular. It has been mentiond 5 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.

InterviewBit mentions (5)

  • TCS NINJA INTERVIEW PREP
    Regarding the TCS Ninja exam details, I would always advise the Official TCS Ninja link with most of details covered on eligibility, test pattern etc. For practice questions, I would suggest review some of the usual topics that are part of the curriculum of Computer Science and Information Technology engineering degrees. Knowing multiple programming languages like Python, Perl, C, Java are very good but knowing a... Source: almost 5 years ago
  • where can i learn python for free?
    After that, I would go over to sites like interviewbit.com or codesignal.com where you'll have a lot of coding tasks/puzzles along with some explanations. It's more fast tracked than codecademy.com but in my experience, these sites have better online IDE's and larger online communities for discussions. Keep in mind that a large part of the learning process is doing a lot of 'how to' searches online. For example:... Source: almost 5 years ago
  • Need help in Starting with DS and Algo
    Hey Guys......have newly started learning DS and Algo. Currently the resources that I am using are interviewbit.com for having a structure and Geeksforgeeks.com to understand any topics that I want more information on. As I am just beginning can someone suggest if this is a good approach or are there any better recommendations to learn practicing DS and Algo questions? I am looking for any free online resources... Source: about 5 years ago
  • Need help in Starting with DS and Algo
    Hi u/Big222444.... So what I was saying is that I have recently started learning Data Structures and Algorithms.... To learn them I am using 2 free resources - interviewbit.com and geeksforgeeks.com .... I am also aware of other websites such as hackerrank, leetcode and hackerearth which people use to practise DS and Algo. So I wanted to ask if someone can recommend a good learning path for practising DS & Algo... Source: about 5 years ago
  • Where can I practice Python interview questions and for online tests at placements?
    If you are looking for a crash-course in interview question prep, I'd recommend interviewbit.com It is an Indian platform and I have personally used it. It has a concise list of problems covering almost all DS and Algo topics. Source: over 5 years ago

Calcumber mentions (0)

We have not tracked any mentions of Calcumber yet. Tracking of Calcumber recommendations started around Jul 2026.

What are some alternatives?

When comparing InterviewBit and Calcumber, you can also consider the following products

InterviewAI - Ace your next interview

Numara Calculator - A simple but powerful notepad calculator which evaluates expressions as you type.

LeetCode - Practice and level up your development skills and prepare for technical interviews.

SpeedCrunch - SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.

Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.