Second Nature is a weight loss app that helps you build healthy habits. We were the first ever online behavioural change programme to be used by the NHS.

How does Second Nature help you lose weight and keep it off? Download the app and try our 12-week programme!


Set goals with help from your health coach (we'll keep you motivated along the way!)

You can track your weight and activity progress using our scales and tracker or by integrating with the Apple Health app. You can check if you are connected to Apple Health from the Settings page in the Second Nature app or from the Apple Health app itself.


Get 1:1 support 5 days a week from an experienced nutritionist who will coach you through the programme.

Access peer support from a small group of Second Nature members who will start the programme at the same time as you. Share your achievements and work through challenges together.


Take things one step at a time! We put a big focus on healthy habits that last. Set habits like meal planning, drinking more water, meditation and increasing your step count.


Our programme is based on the latest scientific evidence and is used by the NHS.

Learn more about nutrition, diabetes, mindset, exercise, sleep and stress with our daily articles.


Get access to over 100 delicious, simple recipes with step-by-step videos. Access our healthy meal plans and meal planner to help with your weight loss.

We're not into fad diets or restriction here. Learn the principles of healthy eating without having to count or track.


We're trusted by the NHS and we know our programme works. Download our app to try our free or premium programme.

Get ready to join thousands of other Second Nature members who’ve successfully used our weight loss app to reach their goals without calorie counting or fad diets.

What’s New

Version 5.3.9

We've made some improvements to the app and fixed a few bugs.

Ratings and Reviews

4.9 out of 5
1.6K Ratings

1.6K Ratings

Androbina ,

Brilliant and life changing!

What an incredible programme this is! It really has been a life changing journey that has been supported by the exceptional support provided by the mentors. I have changed how I eat in a healthy and sustainable way. I’ve also lost 21lbs in 12 weeks, improving my health and boosting my self confidence. The programme is comprehensive, educational, informative and includes lots of great recipes. The support group has been really useful and all the components of the programme have provided a wide range of support structures, education and insight into the challenging psychological aspects of losing weight.
I can’t recommend it enough!

krazylegs33 ,

Noom from the perspective of an active person

Even though I cycle a lot and run a little I had some excess weight to lose, about 1 1/2 stones, and I should have researched SN before beginning the program. So this is a review from the perspective of an active person.
I thought it was a well organised weight loss program and my ‘tutor’ was really lovely, however it is a low carb program and after a couple of days I had no energy to do anything and it just got worse. I would go out cycling and I got slower and slower, I couldn’t even stand on my pedals. So I contacted my tutor for help and was sent articles relating to low carb lifestyle and exercise and was told my energy levels would get better over time. It didn’t. I contacted my tutor again and was encouraged to up my carb levels but it was for me to determine how much I needed which I felt went against the whole reason I had joined SN..... I’d wanted the professional help to lose weight and I was paying for the help and advice which I wasn’t getting. So I joined Noom and I haven’t looked back. I’ve been doing Noom for exactly a month and have lost 11 pounds with a far less restrictive diet and can up my calories depending on how much exercise I do.

annab69 ,

Used to be great — but latest release problematic

I used to love this app — but am confused by the new update. I downloaded the new app on my iPhone and I can’t seem to allow me to do visualise my weight tracking graph (a graph of weight over time) allowing me to choose simply the period of the weight evolution. In the previous version there used to be a super useful feature : that of choosIng with a a single sliding of my 2 fingers, either by spreading them apart, or bringing them together, on the screen, the range of days shown on the graphs. That was important as one could see one’s whole trajectory in one screen — and was really motivating to see the whole picture as opposed to just the last few days...
Can you fix this or explain how it works now?


Second Nature Health Ltd
81.4 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating
Frequent/Intense Medical/Treatment Information


  • Wallet

    Get all of your passes, tickets, cards, and more in one place.

  • Family Sharing

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

You May Also Like