Statistics Calculator Plus vs KIKARAKU

Statistics Calculator — the fastest way to analyze your data on iPhone and iPad. Whether you're a student tackling homework, a teacher preparing examples, or anyone working with numbers, Statistics Calculator gives you instant, accurate results — just paste your data and everything computes in real time. WHAT IT CALCULATES Enter any set of numbers and instantly see: • Count, Sum, Minimum, Maximum • Mean, Median, Mode • Variance and Standard Deviation • Q1, Q2, Q3 and Interquartile Range (IQR) LEARN HOW IT WORKS — STEP BY STEP Tap any result to see the full calculation broken down into simple, easy-to-follow steps. Perfect for students who want to understand the math, not just get the answer. VISUALIZE YOUR DATA An interactive histogram chart shows the shape of your distribution at a glance. Adjust the number of bins (5 to 30) and watch the chart update instantly. A built-in frequency table lists every unique value and how often it appears. FLEXIBLE DATA INPUT Paste data from spreadsheets, type numbers manually, or use any separator you like — spaces, commas, tabs, or line breaks all work. The app silently ignores invalid entries so you never have to clean your data first. RANDOM DATA GENERATOR Need a test dataset fast? Generate up to 10,000 random values in seconds. Control the range, choose integers or decimals, and set the precision — great for classroom demos and practice problems. BUILT FOR STUDENTS AND EDUCATORS • Results update live as you type • Adjustable decimal precision from 2 to 16 places • Clean, distraction-free interface designed for focus • Handles datasets up to 10,000 numbers with ease REFERENCE BUILT IN Not sure what IQR means or how variance is defined? The built-in Reference page explains every statistic and formula in plain language — no internet connection needed. Statistics Calculator is ideal for high school and university students, teachers, data analysts, researchers, and anyone who works with numbers regularly. Thanks for your support! Visit nitrio.com for more great apps for your iOS devices.

Geometry that overturns your intuition. KIKARAKU is an educational app that lets you experience counterintuitive geometry with your own hands. Answer with your gut first, move the shapes to check, then work out why it happens using the geometry you learned at school. Developer: Fuji Bit Inc. KIKARAKU is the 11th app in the "-raku" series of educational apps, and its theme is geometry. It covers 14 puzzles that most people get wrong on instinct, and every one of them unfolds in four phases. Four phases: 1. Gut check: Answer with your gut first. Most people get these wrong. 2. Hands-on: Move the shapes with sliders and buttons, and watch your intuition get overturned. 3. Explanation: Familiar tools such as the circumference formula and the Pythagorean theorem turn the surprise into understanding, with diagrams and formulas. 4. Final check: Answer a challenge question to clear the stage. 14 geometry puzzles (3 categories): Shapes in motion - Angle Puzzles (The Sum of Exterior Angles): do the exterior angles of any polygon add up to 360°? - Secrets of Triangles (Napoleon's Theorem): a hidden equilateral triangle in every triangle? - Symmetry & Motion (The Coin Rotation Paradox): roll a coin around an identical one; how many turns? - Circle Theorems (The Rope Around the Earth): add 1 m to a rope around the Earth; how big is the gap? - Constant Width (The Reuleaux Triangle) (new): is the circle the only shape of constant width? Tricks of length and area - Pythagoras (The Missing Square): how can the same pieces seem to gain a square? - Tangram (Same Area, Different Perimeter): same area, very different perimeters? - Area Master (Same Perimeter, Different Area): which shape holds the most area for a fixed string? - Nets (The Spider and the Fly): find the shortest path across a box by unfolding it. - Coordinate Geometry (Taxicab Geometry): measure along city streets, and a circle becomes a square? Numbers hidden in shapes - Similarity & Ratio (The Square-Cube Law): a giant twice as tall weighs eight times as much? - The Golden Ratio (The Golden Angle and Sunflowers): why do sunflowers turn by about 137.5°? - Volume & Surface Area (Gabriel's Horn): a horn you can fill with paint but never paint. - Geometry & Chance (Buffon's Needle) (new): drop needles on a floor and pi appears. Features: - A clean, modern design (switch between dark and light themes) - A home screen by category that records the stages you have cleared - Every stage advances in four phases, and you can always see where you are - If you go back during the final check, the app asks whether to leave the stage - Available in 74 languages, including English and Japanese (follows your device language) - No sign-in; start right away - The puzzles work offline (the network is used only for ads) Great for students learning geometry, teachers looking for classroom material, and anyone who enjoys a mathematical "wait, really?" Price and purchases: - Price: Free - In-app purchases and subscriptions: None - Ads: Banner ads by Pangle at the bottom of the screen, and a full-screen (interstitial) ad may be shown when you clear a stage - Ads are personalized only if you allow tracking. You can turn this off in "About this app" > "Ad settings" The "-raku" series of educational apps (selection): SUUGAKU (mathematics), BUTURAKU (mechanics), DENRAKU (electromagnetism), HARAKU (waves), NETURAKU (thermodynamics), KORAKU (optics), RYURAKU (fluid dynamics), KAKURAKU (probability), KIKARAKU (geometry)