Sleep Cycle - Bio-alarm clock that wakes you up at optimal times based on your sleep patterns.

Typefully - Write & publish great tweets, without distractions

Sleep as Android - Common alarm clocks ignore your sleep cycles, they wake you on schedule no matter your are currently in your deep sleep. Waking up from deep sleep is unpleasant, it makes you tired and it may negatively affect your productivity during the whole day.

Tweet Tray - Tweet quickly from your desktop without any distractions.

Sleep Time - Alarm Clock - Sleep Time provides insight into your sleep patterns. By tracking your level of movement throughout the night, Sleep Time generates customized sleep data in easy-to-read charts.

ThreadStart - Twitter scheduler for creators specialised on threads