Matrix vs Sotaki

The MatrixAnalysis is carefully designed to be a simple and elegant app. This app has tools to help you analyze matrices like finding eigenvalues and eigenvectors, diagonalization, QR, SLU, LU factorization. This app can also be used to do matrix operations like, finding inverse, determinant, dot product, cross product, and much more. You can also do elementwise operations and scalar operations. Want to do fast fourier transform (FFT) or inverse fourier transform (IFFT), this app is capable of IFFT Want to find an pseudo inverse of a non-square matrix, this app has you covered Want to know a rotation matrix for a given angle or rotate a vector by the given angle? This app has you covered. The expressions and the solutions are displayed in beautiful mathematical way. Once the expressions are solved, a beautifully written solutions are created that you can share with other or save it locally. It automatically saves your hard work locally on your device so you can come back and pick up from where you left off as your great effort will not be lost. There is also a Study page to help you with learning some important matrix vector formulas and some useful technique. This is an app for all student groups. From high school to college to university students. Be creative. Enjoy the app!

Sotaki is the first English accent training app built specifically for Brazilian Portuguese speakers. Using advanced AI speech analysis, Sotaki listens to your pronunciation in real time and gives you instant, personalized feedback to help you sound clear and confident in English. WHETHER YOU'RE A BEGINNER OR ADVANCED Sotaki covers every level from A1 to C2, with 279 lessons across 31 modules. Take a quick placement test when you start, and the app meets you exactly where you are. HOW IT WORKS Record yourself reading real English sentences. Sotaki's AI analyzes your pronunciation instantly and scores you on accuracy. Earn stars, track your progress, and watch your accent improve day by day. FOCUS ON WHAT MATTERS MOST Sotaki targets the specific sounds Brazilian speakers struggle with most — like the difference between "think" and "sink," silent letters, word stress, and connected speech patterns. CAREER-SPECIFIC TRAINING (PREMIUM) Unlock pronunciation exercises tailored to your profession. Practice the vocabulary and phrases used in Medicine, Business, Law, Sales, Construction, and more. FEATURES AI-powered real-time pronunciation scoring 279 levels across 31 modules (A1 to C2) Placement test to find your starting level Focused training on Brazilian-specific pronunciation challenges Career-specific vocabulary and phrases Weekly progress reports Daily practice reminders Skip tests to jump ahead when you're ready FREE TO USE The full main training path with all 279 levels is completely free. Premium unlocks career-specific training, all future content, and unlimited access to the full app. PREMIUM SUBSCRIPTION 7-day free trial, then $9.99/month Unlimited access to the full app Career-specific pronunciation training All new levels and content updates included Cancel anytime Start training your accent today. Your English is already good — let's make it sound great. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/