Unsolved mysteries and economic theories explored.
The app presents over 100 natural and historical unsolved mysteries that currently defy scientific explanation. It also includes content related to "The Road to Serfdom," discussing economic systems and individual freedom.
by 红 陈★ 5.02 ratingsReferenceFreeData updated 2026-10-16
Solves matrices with calculations like inversion, determinant, and decomposition. Explains each of algorithms. Offers interactive geometric visuals. Includes tutorials with proofs and links to related topics for Linear Algebra concepts.
Perform calculations with arithmetic, SI and non-SI units, and physical constants. Support natural and SI units for scientific and everyday use. Evaluate expressions with functions like exp, arctan, and cosh.
The app provides daily sunrise, sunset, day length, and solar noon times. It also includes moonrise, moonset, moon phase times, and moon illumination percentages.
The app provides Sehri and Aftari time calculations, Namaz time calculations, and information about Ramzan. It includes Ahadees, Ayaat, and historical references related to Ramzan.
The app presents a ball balance game where players control a pill bug through natural environments. Players battle insect predators, encountering 24 insect critters with authentic behaviors.
Perform complex calculations with scientific functions and engineering tools. Input equations, use memory functions, and switch between degrees and radians. Save results and view calculation history.
Explore abolitionist stories and housing histories
Explore historical documents related to abolitionism and housing discrimination. Access stories about activism and through interactive content. Discover archival materials and learn about local history.
Study for driving tests with practice questions, mock exams, and detailed explanations. Access content for car and motorcycle tests. Learn road safety rules, signs, and driving techniques. Practice offline with downloadable materials.
Teaches Bangla alphabet through interactive lessons and games. Includes pronunciation practice and character recognition exercises. Tracks individual progress and adapts content based on learning patterns.
The app presents animals in 3D, allowing users to interact with them by touching the screen to trigger actions. Users can also learn animal names, pronunciation, and habitats.
Memorize Bible with topical packs and the Topical Memory System. Practice using the Verse Quiz feature with show/hide functionality. Includes packs such as Roman Road and Prayer.
Simulate particle interactions with adjustable parameters. Observe complex patterns emerging from simple rules. Explore bionic systems through visual dynamics. Analyze group behavior in natural and artificial environments.
Learn and practice cursive calligraphy with structured content including "Grasses Saint Qianwen," "Symbols Explanation," "Radical Index," "Suspected Characters List," and "One Character Per Day." Select characters for copying and practice.
The app provides scripture verses for each Hail Mary to aid meditation during the Luminous or Sorrowful mysteries. Users can select their preferred Bible version, adjust font size, and utilize a daily reminder feature.
Teaches capital and small letters, counting up to 100, shapes, colors, fruits, vegetables, animals, and everyday objects. Includes interactive activities for preschool and kindergarten children.
Study for the DMV exam with practice tests, flashcards, and quizzes. Review traffic laws, road signs, and safe driving practices. Learn vehicle inspection, control, and braking systems. Track progress and access study materials for all exam topics.
The app presents vocabulary by theme, aiding in learning related words. It includes detailed explanations, phrases, derivatives, synonyms, antonyms, and usage examples with authentic American pronunciation.
Study for the driver license exam with practice tests, road signs, and the official driver manual. Preview answers and bookmark questions for later review. Includes motorcycle license practice tests and manuals.