Cronometer: How to make sense of ALL the data to achieve your goals

We’ve worked hard to make the Nutrient Optimiser easy to use while also allowing people to use available data to personalise the recommendations to suit your goals.

We don’t want everyone to have to track every morsel they eat to benefit from the Nutrient Optimiser algorithm.  To avoid this chore, we have characterised the typical nutrient deficiencies of a range of different diets that you might identify with (e.g. low carb, paleo, keto, vegan, plant-based etc).  We also allow you to select conditions that can benefit from emphasising various nutrients.

However, if you want to step up the accuracy of the guidance you receive from the Nutrient Optimiser, we also allow you to upload your food log from Cronometer to enable the Nutrient Optimiser algorithm to further fine-tune your nutritional prescription.

Why Cronometer?

One of the most common questions is whether we can use your data from MyFitnessPal or another food tracking app.

The answer here is both yes and no.

We are in the process of setting up an API link between the Nutrient Optimiser and MyFitnessPal to read your calories and macronutrient data.  This will enable us, based on your macronutrient profile, to get a feel for what micronutrients you might be missing in your diet.   This will be great for people who have been using MFP for a while and don’t need ultimate precision.

Unfortunately, only Cronometer uses the high-quality databases necessary to provide the accurate macronutrient data that the Nutrient Optimiser algorithm relies on.


Other apps may have a lot more foods in their database, but they are typically entered by users and often inaccurate.  They also do not provide the full spectrum of micronutrient data.

The team at Cronometer have done a great job refining their app and web interface to make it user-friendly as well as purchasing the professional food databases.

Cronometer has a free online interface and a $4.99 app that you can use on your phone.  There are additional features in the Gold Edition.  But you don’t need to be paid up to download the data to copy across into the Nutrient Optimiser.

While it is not possible to connect the Nutrient Optimiser directly into your Cronometer account, we can download your data and upload to the Nutrient Optimiser.

How to download your Cronometer data

The main thing you need from Cronometer is the servings.csv file which contains the details of your food log, calories and micronutrients.

To get this, log into your Cronometer account and head over to on a computer (i.e. not on your phone or tablet).

Click on the ‘spiky wheel’ in the account information section and click on ‘Export Data’ (as shown in the screen grab below).


You can change the date range if you want and hit the ‘export servings’ button.  This will save you servings.csv file on your computer.


You can then go ahead and upload your servings.csv file into your free Nutrient Optimiser report.

Uploading into the Nutrient Optimiser Free Report

To get to the free report just tell us what you’re interested in with the drop-down box at, fill in your email address and then hit ‘join now’.


Once you’ve filled in the basic details, the “Want even more precision?  Upload your Cronometer data” option will pop up.


Click on that hyperlink, and you’ll get this screen and be able to drag and drop your Cronometer file.


Full report

Once you have completed your free report you will have the option to upgrade to get a more detailed ‘full report’ if you click on

You can upload your Cronometer data whenever you want.  We suggest checking in every week or so to get some new suggestions on how you can keep refining your food choices.


We hope this makes things as clear as possible and helps you to optimise your nutrition from first principles so you can live life to the fullest!