Apple

The app has a Weight & Balance calculator for gliders in the BASA club.
The calculator determines whether the loading is within the allowed C.G. limits for the glider.

Additionally, it displays all relevant information, such as tow speeds, limiting speeds, stall speeds for actual and reference mass, warnings, tire pressure, etc.

South Indian classical music (aka Carnatic music) is based on melody — called Raga.
You can sample over 120 Ragas in this App.

Raga name will be displayed 30 seconds into the song.

But if you cannot wait, you can press the “Show Raga Now” button.

The number shown in the upper right of a keyboard key indicates how many Ragas in this collection start with that letter.