Solves is a well-made calculator app for your Mac, iPhone, iPad, and Apple Watch. It allows you to edit expressions without limitations and get instant results. It keeps your calculation history in sync on all devices and lets you to easily interact with it. All this for free and with no ads! By purchasing Solves+ you also get: • Unit Conversion: currencies (with crypto, metals & energy), physical units, and your own! • History Tools: bookmark, export, auto clear and more • Fractions • More Themes • Advanced Settings