Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. CALX, a gestural RPN calculator for iOS launched in 2015; newer entries below may have overtaken it.

1. 1
   GradientDaze▲186

   Gesture based gradients never felt so good

   2017 · its alternatives →

2. 2
   KnightOS▲136

   An open-source OS for calculators

   2016 · its alternatives →

3. 3
   Rizon▲25

   A beautiful Golden Hour calculator for iOS

   2015 · reiseversicherung.de.com · its alternatives →

4. 4
   Apache Weex▲127

   A framework for building mobile cross-platform UIs

   2017 · incubator.apache.org · its alternatives →

5. 5
   Optkit 2.0▲99

   The Conversion Rate Optimization Kit

   2014 · its alternatives →

6. 6
   Tydlig▲69

   The calculator reimagined for iOS 7

   2013 · tydligapp.com · its alternatives →

7. 7MD
   MarkupKit – Declarative UI for iOS▲6

   2016 · gkbrown.org · its alternatives →

8. 8
   A minimal calculator app that demonstrates the microservices concept▲7

   2018 · github.com · its alternatives →

9. 9UE
   User Engagement Calculator▲7

   2014 · userengagementcalculator.com · its alternatives →

10. 10RA
    Routy – A clean, minimal subnetting calculator for Android▲9

    2014 · play.google.com · its alternatives →

11. 11
    MiniCalc▲5

    A gesture-based calculator built for tiny screens

    2017 · its alternatives →

12. 12VP
    Visual programming for iOS and Android▲5

    2017 · medium.com · its alternatives →

13. 13
    deeplearn.js▲10

    Hardware-accelerated IA library for the web

    2017 · tensorflow.org · its alternatives →

14. 14
    Calzy 3▲8

    The Smart Calculator: beautifully new + much² better

    2018 · waplestuff.com · its alternatives →

15. 15AC
    A collection of tiny web tools and calculators▲5

    2022 · thetinytools.com · its alternatives →

16. 16BA
    Baseconv: a (very) tiny number conversion utility▲5

    2016 · baseconv.ddns.net · its alternatives →

17. 17OS
    Open-source SIMD-accelerated math library for C/C++/C#/Java/FORTRAN▲9

    2013 · yeppp.info · its alternatives →

18. 18PA
    PyTill: A Python Package for Till Mobile▲9

    2018 · blog.manifold.co · its alternatives →

19. 19PA
    Pineapple, a standalone IPython front end for Mac▲6

    2015 · nwhitehead.github.io · its alternatives →

20. 20TS
    The Surprisal Calculator WM±7▲6

    2025 · surprisal.onrender.com · its alternatives →

21. 21AJ
    A JavaScript calculator using the latest ES6 features▲7

    2017 · calculator.portfolio.braham.biz · its alternatives →

22. 22AM
    A minimalist weight lifting log app▲6

    2017 · plansible.com · its alternatives →

23. 23
    Rechner Calculator 2.0▲4

    AppleWatch version for the tiniest of maths

    2015 · apps.apple.com · its alternatives →

24. 24PW
    Progressive Web App “An Easy Programming Language”▲5

    2018 · easyprog.app · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →