iPhone Screenshots


This app is for use in research studies examining how diet, exercise and sleep affect health and healing. Our body contains circadian (circa – approximately and dian – day) or 24 h clocks that determines the time to sleep, feel hungry or get ready for physical activity. Research studies run in different locations are trying to understand the interaction between “how much” and “when” we sleep, eat or exercise for better health. You need an activation code from these research studies to download and use the app.

Following are the key features:

- Camera function to snap picture of everything you eat or drink
- Sleep tab to record time to bed and time of waking up
- Exercise tab to log physical activity
- Personalized food menu
- Health tab to log and monitor health parameters
- Medication reminders
- Feedback with the research coordinator
- Integrated healthkit framework to track your health information.

What’s New

Version 4.4

New clickable linked tips.
Enhanced push notification features.

Ratings and Reviews

2.2 out of 5
156 Ratings

156 Ratings

Dawning Glass ,

NOT user friendly

Incorrect sleep times. If I go to bed after midnight and wake up 5 hour later, it’s says I slept more than 12 hours. Trying to correct it is almost impossible. I will reel-enter data, then It will change yesterday’s total. Very frustrating. How can you collect in proper data? App is not user friendly. Needs a lot of work. App glitches when trying to enter any data. You have to push the buttons 5 times to get it into the data entry mode. And it is infuriating. Doing this for 2 weeks is difficult due to glitches in app. Not sure I want to deal with this for another 14 weeks.

MintalFlo ,

Has Potential

I struggle to use this app. It's very slow and often freezes not allowing the camera feature or other logging features to work. Its slowness doesn't allow me to log my food in the moment. Overall taking pictures of my food has been the challenge because of the app crashing or not having an easy way to open the camera feature which works unreliably. More recently since the recent update, the app only allows me to log my food without taking a picture. After I save my food or beverage, the camera activates and I take a picture of my food that I just logged but it is not clear to me if the app is double logging my food or not or if this is the new way to log food in the recently updated app! Very frustrating. I will continue to use the app because I believe there is value in this study. I am a firm believer in healthy lifestyle choices and aim to fine tune my efforts to fast by using the feedback (although not accurate) logged here. I already eat quite healthy. I just want a record of my habits in one app. I know it's not 100% accurate, but for my needs at this time, this app seems to be the best choice. I hope the developers continue to improve the app. It has so much potential.

OneHappyMeditator ,

App too slow and buggy to keep using

I was so excited to participate in the research, but after completing the two week baseline I discovered that much of my data was not recorded. Only five or so foods are able to be annotated with a single entry, so much of my data were lost because it took me a week to realize I had to do a new entry just to log an entire meal. Additionally, there were no instructions stating that you couldn’t log food, beverages and meds with a single entry. So if I went sequentially through the tabs, the only thing recorded was the medication; all the food and beverages I annotated were lost. The vast majority of photos I took are not in the history. I wanted so badly to participate in this because it sounded fun and I’m doing time restricted feeding because of Dr. Panda’s research findings. If the technical kinks get worked out, I would be happy to begin again, but right now the data collected for me will just demonstrate a glitchy app and not a picture of my dedication to fully participating.


41.8 MB

Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.


English, French

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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