Khelostar

Win is an all-in-one utility app where the percentage calculator is built around the situations that come up at restaurants, shops, and tax time, not just abstract math problems. Tip calculation is instant with Mode 1: enter your bill total and the tip percentage, and Khelostar returns the exact tip amount and the combined total, useful at any restaurant, no awkward phone math required. Tax addition works through Mode 3: enter any pre-tax price and the tax rate, and Khelostar calculates the amount of tax and the final total after tax is applied, covering VAT, sales tax, and service charges in any country. The calculator tool provides a backup for any adjacent math: standard mode for quick arithmetic and scientific mode for log, sqrt, sin, cos, tan, and power functions, with history for the last 10 expressions and a copy button. Khelostar is a fully offline app with zero registration, the percentage calculator and all nine other tools work immediately without any setup.