Second Nature 17+

Weight Loss & Habit Change

Second Nature Health Ltd

Designed for iPad

    • 4.8 • 3.5K Ratings
    • Free



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 6.10.6

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

Ratings and Reviews

4.8 out of 5
3.5K Ratings

3.5K Ratings

lizzirbif ,

Second Nature

I can thoroughly recommend SN and I do recommend it to other people all the time.
I think the thing is that you really have to work at it - just joining isn’t enough to magic up a ‘new self’, even with the help and support from SN you really have to work hard for yourself.

You need to decide what you value most - the lifestyle that you have been leading which has left you (in my case) overweight, with high blood sugar and pretty unfit and miserable or do you want to work hard with your leader and then later with the community and totally change yourself and your attitudes to life.

The choice is there and the support is all there - in all sorts of forms but it won’t happen without a lot of effort and honesty from you yourself.

Whether it’s because the SN plan suits my personality and body, I know low carb definitely does, Lizzie or whether this was just ‘the right time’ for me I don’t know but SN came to me when I really needed it most and I’m so grateful for that.

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.

Kokoschks ,

Great Start but ......

I had a great start with this program and the psychology behind sensible eating. No counting of calories, just a reduced carb diet with healthy meals. Lots of reading, explanations, suggestions etc. It’s opened my eyes to a healthy eating regime. And I’ve lost a considerable amount of weight in the 3 weeks I been doing it.

However, this app is very frustrating!! It was great for the first two weeks, but now (since they’ve ‘improved it and fixed the bugs’) it’s an absolute disaster and nightmare to use. With many of the applications freezing on you in mid use, unable to use chat for support, unable to plan meals (I’ve actually got someone else’s meal planner!?) I’ve tried reloading. The app but it makes absolutely no difference.
Have messaged support, only to get an automated reply saying they will get back to me in under a week. And there doesn’t appear to be any weekend support from the program or the coach - but that might be because the app isn’t functioning as one would expect. And no communication about whether there is an issue and when it’s likely to be fixed.

You have to sign up for 12 weeks, even for the free 2 weeks, which they will refund if you don’t continue with the program.

Such a great shame as the program seems really good.

App Privacy

The developer, Second Nature Health Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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