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Requirements: Android 1.6+ Overview: You can measure the length, angle, distance, height, direction. Smart Tools is a toolbox of a collection of 1-4 series. It includes 4 Pro versions that have 14 tools. In a word, All-in-One. Part 1. Length, Angle, Slope : Smart Ruler & Protractor Pro Part 2. Distance, Height, Width, Area : Smart Measure Pro Part 3. Direction, Metal detector, GPS : Smart Compass Pro Part 4. Sound level meter, Vibrometer : Sound Meter & Vibration Pro For more description, see the pages for each of the apps. Do you want to have more features? Feel free to contact me. I'll reply it ASAP. I hope my apps are useful to you. Thanks.

Requirements: Android 2.1 and up Overview: An advanced, highly customizable and easy to use general purpose calculator NeoCal is an advanced, award-winning calculator designed to work just like a real calculator, only better. The intuitive keyboard design provides efficient access to over 230 financial, statistical, scientific, programmer, conversion, and date and time functions without having to access menus or lists of functions. The large 12-digit display includes thousands separators and shows labels for calculated and stored results. Backspace, Undo, and Redo make correcting mistakes simple. NeoCal is highly customizable to work the way you do. Enable the Precedence option to reduce entering parenthesis, or enable the RPN option to eliminate them completely. Enable up to four display lines to see current and previous results. Choose your own theme for improved readability. NeoCal is a mature product that has been on the market for eleven years. It has been continually enhanced by suggestions from the user community, making it an even more effective and user-friendly tool. An extensive user guide containing many examples is included in the application. SUMMARY OF BUILT-IN FUNCTIONS - Scientific: trigonometric, hyperbolic, and logarithmic functions; degrees/radians conversions; time and angle conversions; physical constants - Financial: time value of money, amortization; discounted cash flow analysis for internal rate of return and net present value; interest conversion between nominal and effective rates; margin and markup calculations - Statistical: two variable statistical analysis including mean, weighted mean, standard deviation; linear regression forecasting, correlation coefficient; probability calculations - Date and Time: date arithmetic; duration arithmetic and conversions including frames for digital video editing; moment conversions - Programmer: base number conversions between binary, octal, decimal, and hexadecimal; 32-bit, 16-bit,

Requirements: 1.6+ Overview: Powerful GED Math preparation tool. - Powerful GED Math preparation tool. - 1450+ questions (incl. 6 practice quiz) with step-by-step solution for each. - Topic Flashcards incl. formula listing, quick tips, fundamental approach and more This application is NOT just a question bank. It take your preparation to next level by providing effective tools to monitor performance, review questions you answered wrong or group question to revisit later. Features : - 1450+ quality questions covering all facets. - Practice questions and examples by topics with step-by-step solution. - 6 practice quizzes with various difficulty levels. - Ability to save quiz for later review. - Facility to group questions. Question groups can be 'Tricky questions', 'Tough questions' etc. - Easy to use and effective user Interface. - No Wi-Fi or Data Connection required Quiz Feature : - Timer helps simulate realistic exam. - Ability to pause/save quiz to resume at a later time. - Ability to save completed quiz and scorecard for later review. - Summary gives you a birds-eye view of all questions. Jump to any question from question picker. - Step by Step solution of all question. - Ability to restart completed quiz. Score Card features : - Provide time spent on each question. - Score card, along with its graphical view, helps review your performance. Topic feature : - Formula listing and fundamental approach provided for each topic - Short-cut, Quick-tips and operations - Examples are provided for each topic and short-cuts. - Instant validation of Practice questions and examples. TOPICS ------- 1) Numbers & Operations: Numbers, even-odd, substitution, operation, Decimal, factors, fractions, sequence/patterns, counting, absolute 2) Algebra: Roots, Exponents, roots, linear and quadratic equations, inequalities, percent, functions 3) Word Problems: Ratio, Variation/Proportion, motion, work, age, cost 4) Data & Statistics: Probability,