Discrete Probability vs Learn While Walking

Everything you need to learn and compute discrete distributions — formulas, derivations, and visual tools, all in one app. In Discrete Probability app, everything is in one place: • User-friendly calculator • Formulas with rigorous yet easy-to-follow derivations — exportable as images or LaTeX • Descriptions of optimized computation methods when they differ from the standard formulas • Histograms and other essential visual tools Covered in the first version: • General concepts with definitions and derivations / proofs • Binomial distribution • Geometric distribution • Negative Binomial distribution • Hypergeometric distribution • Poisson distribution We welcome your feedback — write to graphmath@aol.com

Learn While Walking turns your daily walk into an opportunity to learn vocabulary. Open the app and start learning new words. Short, focused sessions make it easy to combine language learning with movement. 5 languages. 20 learning directions. Practice vocabulary in English, German, French, Spanish, or Portuguese. Choose your source and target languages from 20 possible learning directions. App interface in 5 languages The app interface is available in English, German, French, Spanish, and Portuguese, including menus, settings, and instructions. When you use the five-language version for the first time, the app automatically selects your device's preferred language if supported. Otherwise, it defaults to English. You can change the app language at any time in Settings, independently of your vocabulary languages. Learn at your level Explore vocabulary organized according to the Common European Framework of Reference for Languages (CEFR), covering all six levels from A1 through C2. All A1 vocabulary is free. In the other available packs, vocabulary entries beginning with A in English are also free to practice. Unlock entries beginning with B through Z with a one-time purchase of the corresponding pack. No subscriptions. Make learning part of your walk Learn vocabulary with your device's built-in motion detection. In Settings, choose how many seconds of walking should pass before the next word appears. Learn with the time-tested Leitner spaced-repetition system. Familiar words appear less often, while challenging words return sooner, helping you focus your practice where it matters most. Follow your vocabulary progress and walking statistics. Private and focused Vocabulary learning works offline. Your learning progress and settings are stored on your device. No account required, no tracking or analytics, and no cloud synchronization of your learning progress. No reminders or notifications. Learn at your own pace. Designed for iPhone and iPad