Multi-purpose calculators for basic math and advanced engineering functions. Track stress with a secure journal using Keychain security. Access all features offline. Store data locally with no cloud syncing. Set a PIN for journal access.
Learn flag signals and their meanings with interactive quizzes and explanations. Practice Morse code and flag alphabets in multiple languages. Send and receive semaphore signals with visual guides for both sending and receiving.
The app offers audio, video, and text messages for iPhone users. It includes micro videos, Bible reading, short articles, and support for simplified and traditional Chinese characters.
