Custom Formula Pro

Custom Formula Pro turns everyday calculations into reusable formulas. Build your own formulas once, plug in values, and get instant results — completely offline. KEY FEATURES • Custom formulas — create, name, and save formulas you use again and again. • Built-in constants — π, e, gravity, speed of light, Avogadro's number, and more, ready to drop into any formula. • Your own constants — define custom constants and reuse them everywhere. • Scientific & exponential math — powers, square roots, exp, log, and trigonometry. • Calculation history — every result saved so you can revisit past work. • Export — save your formulas and results. • 100% offline — no account, no internet needed. Your data stays on your device. FREE & PREMIUM Custom Formula Pro is free to start with a generous trial. Premium unlocks unlimited formulas, unlimited custom constants, full history, and export — available as an Individual or Business subscription. Perfect for engineers, students, scientists, teachers, and anyone who works with formulas every day.