Download Data

Download the data collected using the Cozie Apple Watch survey#

You can download the data you have collected using the Cozie Apple Watch survey using the following Python code. Please note that you will have to specify your USER_ID and API_KEY. Therefore, it is very important that you have successfully completed Step 5 in Instructions for testers. You can get these information by emailing us at

All the data you have queried are saved inside the Pandas dataframe called df.

Keep also in mind that some records (rows of the dataframe) only contain heart rate data. Consequently if you are interested in analysing only the responses that a participant (USER_ID) provided using the apple watch, please first filter out all the records which contain 'NaN' in the VoteLog column using the following command df = df.dropna(subset=['voteLog'])

YOUR_TIMEZONE = 'Asia/Singapore'
WEEKS = "10"
API_KEY = 'k6iy7nxkBn9hTvScq2vHV8qhXMLl95oA2zlNdA8h'
payload = {'user_id': USER_ID, 'weeks': WEEKS}
# the api-key below is limited to 200 queries per day. Please contact us to get an API key
headers = {"Accept": "application/json", 'x-api-key': API_KEY}
response = requests.get( '', params=payload, headers=headers)
my_json = response.content.decode('utf8').replace("'", '"')
data = json.loads(my_json)
df = pd.read_json(data[1]['data']).T
df.index = df.index.tz_localize('UTC').tz_convert(YOUR_TIMEZONE)