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Devplan VS Calcumber

Compare Devplan VS Calcumber and see what are their differences

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AI agents that spec, build, test, and ship code โ€” with voice chat, deep GitHub integration, and zero LLM markup. 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.
Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

Devplan logo Devplan

Next generation product development planning.

Calcumber logo Calcumber

Calculate in a notebook and share โ€” from everyday math to engineering.
Visit Website
Not present
  • 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.

Devplan

Website
devplan.com
Pricing URL
Official Devplan Pricing
$ Details
-
Platforms
-
Release Date
-
Edit details

Calcumber

Website
calcumber.app
Pricing URL
-
$ 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
Edit details

Devplan features and specs

  • Project Planning Focus
    Devplan is designed specifically for development project planning, offering tools tailored to software teams that need to organize, estimate, and track their development workflows effectively.
  • Task Management
    The platform provides structured task management capabilities that help development teams break down projects into manageable pieces, assign responsibilities, and monitor progress.
  • Team Collaboration
    Devplan facilitates collaboration among team members by providing shared project views and communication features that keep everyone aligned on project goals and timelines.
  • Development-Centric Approach
    Unlike generic project management tools, Devplan is built with software development processes in mind, making it more intuitive for engineering teams to adopt and use in their daily workflows.
  • Simplified Workflow
    The tool aims to simplify the planning process for developers, reducing the overhead typically associated with complex project management platforms and allowing teams to focus more on actual development work.

Possible disadvantages of Devplan

  • Limited Market Presence
    Devplan has a relatively small user base and limited market presence compared to well-established competitors like Jira, Asana, or Trello, which can make it harder to find community support and third-party resources.
  • Fewer Integrations
    Compared to major project management tools, Devplan may offer fewer integrations with popular development tools, CI/CD pipelines, and other third-party services that teams commonly rely on.
  • Limited Reviews and Documentation
    There is relatively scarce public information, user reviews, and community documentation available for Devplan, making it difficult for potential users to evaluate the platform thoroughly before committing.
  • Scalability Concerns
    As a smaller platform, there may be concerns about how well Devplan scales for larger organizations or complex enterprise-level projects with hundreds of team members and numerous concurrent projects.
  • Feature Set Maturity
    Being a less prominent tool in a highly competitive market, Devplan may lack some of the advanced features and polished user experience that more mature and well-funded project management platforms offer.

Calcumber features and specs

  • ๐ŸŒฟ Naturally type expressions
    get immediate results
  • ๐Ÿ”— Copy and share
    keep calculations editable with a link
  • ๐Ÿงฉ Variables and constants
    pi, e, G, mu0
  • ๐Ÿงช Scientific functions
    sin, acos, log, round, and more
  • โ™จ๏ธ Thermodynamic fluid properties
    refrigeration, heat pumps, steam and air
  • ๐Ÿ’ก Installation optional
    run directly in your browser
  • ๐Ÿ“ฑ Multi-platform
    WebApp, Windows, more to come

Analysis of Devplan

Overall verdict

  • Devplan appears to be a solid choice for teams and product managers looking to streamline the planning phase of software development by leveraging AI to generate structured product requirements, specs, and development plans, though as with any AI-driven planning tool, output quality depends on the clarity of input and it should complement rather than replace human judgment.

Why this product is good

  • Uses AI to accelerate creation of product requirement documents, specs, and development plans, saving significant time compared to manual drafting
  • Helps translate high-level ideas into structured, actionable plans that engineering teams can work from
  • Can improve consistency and completeness of documentation across projects
  • Reduces friction between product and engineering teams by providing clearer specs and shared context
  • Useful for iterating quickly on product ideas before committing engineering resources

Recommended for

  • Product managers who need to quickly draft requirements and specs
  • Startups and small teams without dedicated technical writers or business analysts
  • Engineering teams that want clearer, more structured input before starting development
  • Founders validating and scoping new product ideas
  • Teams looking to standardize their planning and documentation process

Category Popularity

0-100% (relative to Devplan and Calcumber)

Devplan

Calcumber

AI
100 100%
AI
0% 0
Education
0 0%
Education
100% 100
AI Assistant
100 100%
AI Assistant
0% 0
Engineering Calculator
0 0%
Engineering Calculator
100% 100

Questions & Answers

As answered by people managing Devplan 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?

Calcumber's answer:

Eastern Switzerland University of Applied Sciences

User comments

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What are some alternatives?

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

Katana MRP - Katana Cloud Inventory gives you a live look at all the moving parts of your business โ€” sales, inventory, and beyond. Combining a visual interface and smart real-time master planner, Katana makes managing inventory and manufacturing intuitive.

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

MRPEasy - Cloud-based ERP Software for Small Manufacturers (10 - 200 employees)

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 Donateย .

Odoo Manufacturing (MRP) - Get everything you need for manufacturing with one single software - it's a great modern solution to an old problem.

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

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