The Simba Sleep App enables you to break bad sleep habits, find your sleep persona and access expert guidance - without the need for a wearable tracker. Inspired by our work with experts in sleep, psychology, neuroscience and behaviour change, we want to empower you to make small positive changes to your routine - so you can improve your wellness with your eyes closed.

- Start with a simple survey of your current habits
- Create your sleep profile
- Get expert guidance to make simple changes
- Track your sleep with your phone and watch the changes over time

The world is scraping by on too little sleep. But when each person gets the quality sleep they need, they feel and act - even look - better. Plus they pass on that positivity to the people around them. We think that’s a future worth waking up to, so we’ve put the power to sleep better in your hands.

The Simba Sleep App connects to the Health app (HealthKit) to store your sleep sessions and read your resting heartbeat data to show them in a useful and beautiful way.

What’s New

Version 2.0.7

Bug fixes and improvements.

Ratings and Reviews

4.2 out of 5
302 Ratings

302 Ratings

cmc575 ,

Easy to use but...

Two things about the app:
Your screen is ‘on’ all night - hence the instruction to leave it face down. I’m not sure this is good for the phone if used every day over a long period
The results look ok but don’t agree at all with the sleep patterns I get on my FitBit. How can the Simba app detect who it is monitoring if there are two people (or a human plus dog) in the bed?
The menu to set it going isn’t very straightforward- you find it under ‘alarm’ whereas a link under ‘monitor’ would be better. When you do find it, you have to touch ‘start tracking’ on two pages before it begins monitoring, which is confusing.
Overall it’s a good idea but needs fine tuning abc I’d like to see its performance compared to other sleep trackers

Developer Response ,

Hey cmc575,

Thank you so much for your review. We're constantly working on improving the app so your feedback is very valuable to us.

In regards to the screen, you definitely don't have to keep it 'on' all night, we even recommend that you don't. You can lock your screen or even exit the app and tracking will continue to work in the background without a problem. If you have screen auto-lock enabled on your phone, it will lock automatically after a while depending on your settings.

We're also currently working on full integration with Fitbit and other wearable devices, which should help with your tracking. One thing to note is that Fitbit, Apple Watch etc. track your movement and motion, where as the app primarily relies on sound analysis, so results can vary slightly. Once the integration is complete, we'll be able to overlay your motion data with the sound analysis to give you even more accurate results.

We'll keep you posted on progress and please don't hesitate to share any further feedback with us via

JBstokie ,

Just what I’ve been looking for

I’m not a great sleeper by any means and have used sleep trackers for a while. But nothing that I feel is specifically tailored to the way I sleep and definitely nothing that has helped to improve the quality of my sleep.

Simba has offered tips and sleep notes have helped me to almost self-diagnose areas for improvement. My length and quality of sleep has improved greatly and I feel much healthier for it.

There have been a couple of bugs which is not ideal, but these were patched pretty much immediately so didn’t impact my results.

b3sty ,

Could be better [edit:new phone fixed issues]

Microphone has been stuck on after app closed requiring deletion of the app to remedy. App also doesn’t allow for you getting up in he night, which is not much use if you have a newborn. If you try to reset and go back to sleep then it only stores your first sleep session.

Edit to say this app now works perfectly on my new iPhone XR. My old phone was quite old so I’m guessing maybe had hardware issues. Thanks to the developers for your reply.

Developer Response ,

hey b3sty,

Thank you so much for your comments and feedback. Sorry to hear that you had issues with your microphone, it's not something we've come across before but we will certainly investigate.

In regards to getting up in the night, the app will definitely pick this up and show you as awake during those times. This will happen automatically so you don't have to change anything if the tracking / alarm has already been set. Alternatively if you want to change your alarm time or pause tracking temporarily you can also do that and the app will merge your sleep sessions together if you start and stop multiple times, so that's no problem.

Please don't hesitate to share any further feedback with us via


Simba Sleep Limited
362.9 MB

Requires iOS 11.4 and watchOS 5.2 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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