TeX Writer. TeX/LaTeX Editor and Compiler for iOS and Android.
Golden Ear. A Lossless Music Player for iOS.
iDOS. Released on A DOS Emulator based on dosbox. An elder brother of iDOS, known as DOSPad, is living inside Cydia space.
Write Only. A minimalistic typewriter app for iOS.
TeX Equation. Typeset equation on iPad and paste into Pages/Keynote. For people working with formulas.