Stepwising vs Olé

Stepwising invites you to explore, play with, and learn about gravity. You can check out Kepler's laws of planetary motion, observe and discover solutions to the 3-body problem, or try to drive a frictionless car around a circular track of ice. The program closely approximates the motion of stars, planets, moons, and other celestial objects moving through space under the influence of their gravitational fields. It does this recursively: an object's position determines the amount of force on it, the amount of force on it determines its acceleration, its acceleration determines its average velocity over a short period of time, and its average velocity determines its next position. If the time interval between calculations is small, a very good approximation of the motion is produced.

Speak European Spanish and understand all other dialects with Olé. --- Learn European Spanish with Ease Whether you're a traveler in Spain, a business professional connecting with suppliers, or a student tackling tricky Spanish vocabulary, Olé is designed for you. Dictionary - 845,000+ words: Discover words specific to European Spanish and compare them with other dialects. - 253,000+ example sentences: See words in context for better understanding. - Conjugations for 7,600+ verbs: Master every verb form effortlessly. Dual-Direction Search Quickly translate between English and Spanish. Start typing in either language, and Olé does the rest. Pronunciation Tap the speaker icon on any word to hear it spoken aloud, so you know how it actually sounds. Detailed Verb Conjugations From basic forms to advanced tenses, Olé makes mastering Spanish verbs simple, helping you speak and write fluently. Saved Words Bookmark words as you look them up, and build your own list to review later. Offline Functionality No internet? No problem. Olé works entirely offline, so you can translate anytime, anywhere, without worrying about connectivity. Free to Use No ads and no in-app purchases. Privacy First Your data stays yours. Olé doesn't require special permissions or collect any information, offering a private and secure experience. Specialized for European Spanish This app focuses on European Spanish vocabulary and phrases, ensuring you sound like a local. With contributions from Argentina, Bolivia, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Equatorial Guinea, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Spain, Uruguay, and Venezuela, Olé delivers the right word for the right country. --- Olé is a free, offline dictionary and conjugator for European Spanish.