Glowcalc | Neon Calculator Live

GlowCalc is a calculator that glows. Every key lights up with a soft neon light when you press it, in the colours you choose. It is quick, clear and fun to use, and it works fully offline. THREE CALCULATORS IN ONE • Basic: + − × ÷ and % (phone-style percent: 200 + 10% = 220), plus a 00 key • Scientific: sin, cos, tan and their inverses (DEG or RAD), log, ln, eˣ, 10ˣ, √, ∛, x², x³, xʸ, n!, π, e, brackets and Ans • Tax: add or remove tax in one tap with TAX+ and TAX−. Rates for about 100 countries, all US states and Canadian provinces, India GST with the CGST/SGST split, or your own custom rate. See net, tax and total at a glance. Switch to the tax or scientific calculator in one tap from the main screen. MAKE IT GLOW YOUR WAY • Single colour: 10 neon presets, or pick any colour on the colour wheel • 2-colour gradient: 12 ready-made gradients • Rainbow multi-colour, or a random colour on every press • Your colour runs through the whole app: the glowing = key, the C key, highlights and settings • Light and dark themes, or follow your phone • Round keys or chamfered square keys SMART LITTLE TOUCHES • Swipe the delete key left to type a decimal point. It slides back to delete after use. Long-press delete to clear everything. • A little face next to C reacts to the + − × ÷ and = keys • Long-press the display to copy the result • Precise math with up to 15 significant digits • Optional vibration on every key press HISTORY • Your calculations are saved for two months • Tap a record to reuse its result • Long-press to select and delete records, or clear everything at once PRIVATE BY DESIGN • No ads • No accounts or sign-in • No tracking or analytics • No internet permission: everything stays on your phone Questions or ideas? Write to [email protected]