Sleep Ninja

Name: Sleep Ninja
Rating: 3.1 (35 reviews)
Author: Black Dog Institute

Health & Fitness

Only for iPhone

Free

35 Ratings
Age Rating

9+
Years
Category

Health & Fitness
Developer

Black Dog Institute
Language

EN
English
Size

68.5
MB

iPhone

Sleep Ninja is a Black Dog Institute created app providing evidence-based strategies to help young people improve their sleep. For more information, please contact sleep@blackdog.org.au

Ratings & Reviews

3.1

out of 5

35 Ratings

Help please
19/11/2025
Ethical enthusiast
Every morning it says I have to go to bed! So I can’t track my sleep or level up

Developer Response
Hi there,Sorry to hear that you are experiencing some difficulty with the app. We really appreciate you letting us know. We recently released a new version of the app which has fixed this problem, so updating the app should fix this issue. If the problem continues, please reach out to us via email at sleep@blackdog.org.au and we can help you.
Help please
19/11/2025
Ethical enthusiast

Every morning it says I have to go to bed! So I can’t track my sleep or level up
Developer Response 9 June
Hi there,Sorry to hear that you are experiencing some difficulty with the app. We really appreciate you letting us know. We recently released a new version of the app which has fixed this problem, so updating the app should fix this issue. If the problem continues, please reach out to us via email at sleep@blackdog.org.au and we can help you.
App won’t open
15/03/2025
CC-okok
We got through session 1 and tracked two times before the app just started working - it wont even open. Tried downloading it on our iPad and it’s not opening on that either. My daughter was enjoying using the app together so this is disappointing.
App won’t open
15/03/2025
CC-okok

We got through session 1 and tracked two times before the app just started working - it wont even open. Tried downloading it on our iPad and it’s not opening on that either. My daughter was enjoying using the app together so this is disappointing.
Not teen/adult friendly
12 Apr
Basic bad
It uses writing only for a very long time when you sign up. People want to play with apps and listen to sleep meditation stories, but this app makes you read lots of writing without many animations and forces you to do “training” rather than fun and helpful sleep activities. It’s really boring and wouldn’t appeal to teens.

Developer Response
Hi there,Thanks so much for reaching out and we’re sorry to hear that you find the app too text-heavy. The training is designed to build lasting improvements to users’ sleep habits that continue to help over time. If this isn’t what you’re looking for – we do have a meditation track in the ‘More’ section of the app!
Not teen/adult friendly
12 Apr
Basic bad

It uses writing only for a very long time when you sign up. People want to play with apps and listen to sleep meditation stories, but this app makes you read lots of writing without many animations and forces you to do “training” rather than fun and helpful sleep activities. It’s really boring and wouldn’t appeal to teens.
Developer Response 9 June
Hi there,Thanks so much for reaching out and we’re sorry to hear that you find the app too text-heavy. The training is designed to build lasting improvements to users’ sleep habits that continue to help over time. If this isn’t what you’re looking for – we do have a meditation track in the ‘More’ section of the app!
App won't open.
7 May
Tokomiiii
I just downloaded it, and it won't open at all? I've reinstalled twice, same thing. And I've restarted my phone, checked for phone updates.. Nothing works?

Developer Response
Hi Tokomiiii,Sorry to hear that you are experiencing some difficulty opening the app. We really appreciate you letting us know. Please reach out to us via email at sleep@blackdog.org.au and we will help you to resolve this issue.
App won't open.
7 May
Tokomiiii

I just downloaded it, and it won't open at all? I've reinstalled twice, same thing. And I've restarted my phone, checked for phone updates.. Nothing works?
Developer Response 9 June
Hi Tokomiiii,Sorry to hear that you are experiencing some difficulty opening the app. We really appreciate you letting us know. Please reach out to us via email at sleep@blackdog.org.au and we will help you to resolve this issue.

• Updated check-in questionnaires with reminders to track your progress • Retake completed training sessions any time • Belt progression simplified, no lesson completion required • Personalised wake-up notifications based on your belt level • Research consent and updated terms & conditions • "What's New" screen • Bug fixes and performance improvements

Version 1.2.0 12 May

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Accessibility

Information

Seller: Black Dog Institute
Size: 68.5 MB
Category: Health & Fitness
Compatibility: Requires iOS 16.0 or later.

iPhone
Requires iOS 16.0 or later.

Apple Vision
Requires visionOS 1.0 or later.
Languages: English
Age Classification: 9+

9+

Learn More

Contains
Health or Wellness Topics