Software Alternatives, Accelerators & Startups

Flowkey VS Calcumber

Compare Flowkey VS Calcumber and see what are their differences

Flowkey logo Flowkey

The easiest way to learn piano with your iPhone or iPad

Calcumber logo Calcumber

Calculate in a notebook and share — from everyday math to engineering.
Visit Website
  • Flowkey Landing page
    Landing page //
    2023-01-31
  • 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.

Flowkey

$ Details
-
Platforms
-
Release Date
-

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

Flowkey features and specs

  • User-Friendly Interface
    Flowkey offers a clean and intuitive interface that makes it easy for users of all ages and skill levels to navigate and use the app.
  • Variety of Songs
    The platform offers a wide range of songs across different genres and difficulty levels, ensuring that there is something for everyone.
  • Real-Time Feedback
    Flowkey provides real-time feedback on your playing, helping you to correct mistakes and improve your skills more efficiently.
  • Compatibility
    Flowkey is compatible with various devices, including Windows, Mac, iOS, and Android, allowing users to practice anytime, anywhere.
  • Video Tutorials
    The app includes video tutorials from professional musicians, which can be very helpful for learning new techniques and understanding complex parts of a song.

Possible disadvantages of Flowkey

  • Subscription Cost
    Flowkey requires a subscription for full access, which may be expensive for some users compared to other learning resources.
  • Limited Sheet Music Features
    The app does not offer advanced sheet music features like annotation tools, which can be a limitation for those who want more control over their learning materials.
  • No Offline Mode
    Flowkey requires an internet connection to access its features, which can be inconvenient for users who want to practice in locations without reliable internet.
  • Focused on Beginners
    While excellent for beginners, more advanced players may find the available content and features somewhat limited for their needs.
  • Limited Customization
    The app lacks in-depth customization options for lessons and practice sessions, which could be a drawback for users looking for a tailored learning experience.

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

Analysis of Flowkey

Overall verdict

  • Flowkey is generally considered a good option for those wanting to learn piano. It provides valuable features that cater to various learning needs and integrates technology effectively to facilitate music education. While it might not replace in-person lessons for everyone, it serves as a powerful supplemental tool.

Why this product is good

  • Flowkey is a music learning app known for its user-friendly interface and comprehensive piano lesson offerings. It utilizes real-time feedback as you play, making it an engaging way to learn piano for beginners and intermediate players. It covers a wide range of music genres and offers a diverse library of songs which can keep learners motivated.

Recommended for

    Flowkey is recommended for beginner to intermediate piano players, busy individuals who prefer a flexible learning schedule, and anyone seeking to learn piano from home with interactive tools. It's also suitable for those who enjoy learning through a mix of structured lessons and playing familiar songs.

Flowkey videos

flowkey vs Simply Piano: Comprehensive Review & Comparison

More videos:

  • Tutorial - FLOWKEY - Piano Tutorial App - [Review]
  • Review - PianoTV tries Flowkey! (An App for Learning Piano)

Calcumber videos

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

Add video

Category Popularity

0-100% (relative to Flowkey and Calcumber)
Music
100 100%
0% 0
Math Calculators
0 0%
100% 100
Piano
100 100%
0% 0
Math Solver
0 0%
100% 100

Questions & Answers

As answered by people managing Flowkey 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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What are some alternatives?

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

Simply Piano - Fast and fun way to learn piano

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

Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.

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 .

La Touche Musicale Piano Go - With La Touche Musicale, you can learn piano online easily with the songs you love. Discover a fun and effective learning method to progress very quickly.

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