Sleep Ninja

Updated 15 October 2026

Sleep-tracking app screen shows average sleep efficiency, a weekly activity tip, daily scores, and purple, orange, and yellow belt levels.

Sleep-tracking app screen shows a friendly ninja character meditating on a cloud, with information about sleep schedules and a button prompting users to track their sleep.

App activity shows a bedroom scene with cluttered toys, clothes, and gear, with a prompt for users to identify items that don't belong in the bedroom at night.

Built specifically for teens by the Black Dog Institute, Sleep Ninja uses evidence-based strategies to help you establish better sleep hygiene, fall asleep faster and wake up ready for the day.

Type:: App
Cost:: Free
Helpful for:: Sleep & relaxation, Health & fitness
Developer:: Black Dog Institute

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