Subtle has contextual reveal at its heart and uses delightful motion to enrich the user experience and crisp typography to make calculations easy-to-read. It has scrollable operators that extends access to more yet occasionally-used operators.
Being a designer, I was always frustrated to see the boxy old-style UI on most non-stock simple calculators. Ones that had good UI (at least back in 2017) had annoying ads.
Subtle not only delivers a minimal, no-ad calculation experience but innovates, experiments & stretches the limits of usability. Furthermore, I see it as the start of a product conversation with the users (the world) at large.
If you are interested in the 'making of Subtle' journey give this a look: https://bootcamp.uxdesign.cc/how...
Subtle Calculator
Subtle Calculator