ArcSphere vs My Percent

ArcSphere is an AI Navigator that turns scattered tabs into clear answers. Chat across pages, summarize content, draft text, and insert results directly—no copying links, no switching apps. Organize tabs with Spheres, ask questions as you browse, and get one clear answer from all your tabs. Browse Smarter, Think Deeper.

From shopping discounts and percentage changes to stock returns and average cost, My Percent helps you work out the numbers in one place. Percentage calculations • Find a percentage of an amount or quantity • Calculate a value after an increase, discount or decrease • Find what percentage a part represents of a total • Compare the percentage change between two values Stock returns and average cost • Calculate your investment from average cost and share quantity • Enter a current or expected share price to see position value, profit or loss, and return • Add multiple purchases to calculate a new average cost and total shares • Enter a purchase price with either share quantity or purchase amount Continue and save calculations • Apply addition, subtraction, multiplication, division and percentage changes to a result • Save results with a name and review them later Make the display your own • Layouts for iPhone and iPad • Light, Dark and System themes • Small, Medium and Large display sizes • Korean and English language options • Field help to explain what to enter Check a sale price, track progress, compare changing amounts or explore how another stock purchase affects your average cost. Stock calculations use the values you enter and exclude fees, taxes and exchange rates.