This issue indicates that Pillow couldn’t find any data in order to perform sleep analysis. This happens because Pillow doesn’t have permission to access the required Apple Health data or your Apple Watch didn’t capture any data.

Here’s how to check:
1. Open the “App Store” app on your iPhone
2. Tap on your profile picture at the top right corner of the screen

3. Swipe down to refresh the page
4. Check if there is an update available for “Pillow”

Pillow uses Apple Health data in order to perform sleep analysis and requires permission to access that data. Sometimes, those permissions get reset, especially after an update of iOS or Pillow.

How to reset Apple Health permissions:

Alternative way to reset Apple Health Permissions:

If you use Pillow with your Apple Watch, Pillow will try to look for Apple Health data registered by the Apple Watch while you were asleep. If you don’t wear your Apple Watch during sleep, then Pillow will NOT be able to perform sleep analysis. There is no need to launch Pillow in order to register data. The Apple Watch will automatically capture all required data as long as you wear it during sleep.

Sometimes your Apple Watch may fail to register any data or transmit registered data to the iPhone. Here’s how to verify that your Apple Watch registered data:

Note: This step requires that Pillow has permission to access Apple Health. (See section 2 above.)

If Pillow displays "Apple Health data found" then your Apple Watch does register data.

This is a special a requirement if you use Pillow in “Automatic“ mode. Automatic mode in Pillow relies on Apple Watch sensor data that get transmitted from the Apple Watch to the iPhone via Bluetooth or Wifi. This process is handled entirely by watchOS automatically. Sometimes it might take 2-10 minutes to transmit all required data from the Apple Watch to the iPhone, especially if the Apple Watch is low on battery.

If your devices are in Airplane mode then the Apple Watch will not be able to communicate with the iPhone. You can use Airplane mode while you are sleeping but remember to turn Airplane mode off when you wake up to allow the Apple Watch to finish transmitting all the registered data to the iPhone (this might take a few minutes).

If you use a passcode for your Apple Watch, your sensor data will not be accessible if you do not enter a passcode when you go to sleep.

Remember to enter your passcode when you wear your Apple Watch before sleep.

If you have turned off wrist detection, heart rate data that are necessary to perform sleep analysis will not be recorded by your Apple Watch.

To enable wrist detection:
1. Open the “Watch” app on your iPhone
2. Go to “Passcode”
3. Turn ON “Wrist Detection”

Here’s how to check:
1. Open the “Settings” app on your iPhone (It has a grey icon with cogs)
2. Go to “Privacy” > “Motion & Fitness”
3. Turn ON “Fitness Tracking”
4. Turn ON the switch next to Pillow

5. Open the “Watch” app on your iPhone (It has a black icon with an Apple Watch)

6. Go to “Privacy” > Turn ON “Heart Rate” and “Fitness Tracking”

If your Apple Watch is about to run out of battery, it will go into “Power saving mode” which turns off all sensors so in this case, your Apple Watch will not register any data.

If you wear your Apple Watch loosely on your wrist the Heart Rate Sensor on your wrist will not be able to record your heart rate properly.If you have a large tattoo on the wrist that you wear your Apple Watch then your heart rate data might not be recorded properly.

If you don’t use Pillow’s Automatic mode, the easiest way to start a session manually with your Apple Watch is as follows:
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1. Open Pillow on your iPhone, keep it open and do not press any buttons

2. Open Pillow on your Apple Watch

3. Select (one of) the preset mode(s) you have created and tap on "Start"

If you have checked all the items above and the issue persists:

Sometimes Pillow is not properly installed and configured by iOS so the only to fix this issues is to re-install Pillow.

If none of the above works we suggest that you un-pair and pair your Apple Watch again. We strongly recommend that setup as a new Apple Watch since restoring from a backup might bring back the problematic setup that is causing this issue

If none of the above recommendations work, please contact our support team to help you. To contact support: Open Pillow on your iPhone › Tap on the Settings icon at the top right corner › Select ‘Helpdesk’.