Maths Formulas Free v9.1.1 [Ad-free]
Requirements: 3.0 and up
Overview: “Maths Formulas” is a perfect app that provides all basic and advanced
formulas in mathematics.

Available in many languages, this is a perfect app on Google Play that provides all basic formulas... http://www.apkformod.com/maths-formulas-free-v9-1-1-ad-free/