Summa – Precision Made Simple

Summa - Precision Made Simple is a clean, fast, and beautifully designed calculator for iPhone and iPad. Built for everyday math, scientific calculations, quick conversions, and everything in between, Summa makes calculating effortless, accurate, and genuinely enjoyable.

With live preview, a fast history bar, and natural gestures, Summa helps you move quickly without losing context. Results appear as you type, past calculations stay within reach, and Favorites make it easy to save the numbers you return to most.

Powerful features, simply presented:

• Live preview - see results instantly as you type
• History and Favorites - revisit, reuse, and save important calculations
• Exponents and roots - x^2, x^y, square root, and y-th root
• Trigonometry - sin, cos, tan, and inverse arc functions
• Degree and radian support - easily switch between DEG and RAD
• Mathematical constants - π and e
• Logarithmic functions - ln for natural logarithms
• Smart gestures - swipe, tap, and interact naturally

A calculator with a capable converter:

Summa includes built-in conversions for money, temperature, length, weight, volume, energy, area, and data size. Convert currencies by name or country, work with fiat and crypto rates, or quickly switch between everyday units without leaving the app.

For market data, Summa offers flexible refresh behavior with adjustable fiat and crypto cache timing. Relay mode can route fiat and crypto market refreshes through Studio Elytra15’s cache for a more private path.

Designed to feel personal:

• Multiple themes, including light, dark, and crafted color themes
• Alternate Home Screen icons
• A calm, polished interface for iPhone and iPad
• Completely free - no ads, no in-app purchases, and no tracking

Whether you’re at home, at work, in class, or on the go, Summa is your reliable, elegant calculator companion.

Precise math, beautifully simple.