Tired of juggling numbers in your head? Fusion Calculator makes calculations a breeze! Drag & Drop Numbers: Easily set aside calculations anywhere on the screen for later use. Recall & Reuse: Bring back saved numbers to add, subtract, multiply, or divide with ease. One-Touch Summation: Quickly add up all on-screen calculations with a single tap. This free version includes ads. Upgrade to the ad-free "Fusion Calculator" for a seamless experience.