1. Sleep Bot
SleepBot is the app which is free of cost for both Android and IOS which tracks the sleep timings. SleepBot generally uses your smartphones accelerometer. You can fix an alarm and fix a time range to wake up. It also let you know the smart sleeping habits.
2. Sleep Time +
Sleep Time+ tracks the iPhone sensors which measures the quality of your sleep. It sets the alarm which lets you have a sound sleep. Sleep Time+ allows you to set alarm and track the sleep. It has a other good feature to help you sleep and Health Kit integration with soundscapes. Another best app for iOS users.
Pzizz is the sleeping app which is the combination of music, sound effects and beats with adjustable volume levels to make it soothing to listen, to make you out of stress and make you energetic. There is a huge collection of audio elements which makes the tune unique every time
Awoken enables the person in sleep to make reality checks to boost the awareness of their state of dream. This helps the person to reach the lucid dreaming state where a person will be aware of that they are in a dream. After that Awoken using the audio clips trains the person in making reality checks. It also enables you to log the dream impressions. These impressions are filtered as per the requirement (i.e date or tagging by content etc).