The Fast 800

In-app purchases
5.0
530 reviews
10K+
Downloads
Content rating
Everyone
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About this app

The Fast 800 is a personalised trainer and nutritionist, ready when you are, to support long-term weight loss and better health.

Developed by Dr Michael Mosley and independently validated by healthcare advisors, nearly 100,000 members have found success with our easy-to-stick-to programme.

With its personalised plans using science-based methods, The Fast 800 has helped thousands achieve their goals with intermittent fasting and the highly acclaimed Mediterranean-style diet. Our Programme is the easiest, most convenient way to learn how to improve your health, with the tools to help you do it and real, delicious recipes to ensure you enjoy it.

The Fast 800 is all you need to keep yourself accountable and start improving your health in a sustainable, delicious way. Via the app, you have access to:

- 18 healthy, nutritionally balanced meal plans
- Options for keto, vegetarian and 5:2
- A library of 700+ delicious recipes
- Daily guided workouts
- Low-impact to advanced exercise
- Resistance and HIIT training guides
- Pilates, yoga and stretching library
- Mindfulness guides and audio meditations
- Health Coach and Community support

While many people join The Fast 800 to lose weight, and lose more than 6kg in 12 weeks on average, the goal of the programme is actually to improve your health. As it so happens, weight loss is a consequence of that.

Over the years, members have seen significant improvements to their health, from reversing type 2 diabetes, to improving blood pressure and reducing the amount of medication they take.

At 54 years old, Helen, lost an astounding 21kg with The Fast 800 Programme. Helen was previously dealing with thyroid issues, fatigue and pain in her knees and hips. Since joining the programme, she's left that life behind and now lives pain-free.

“Over 13 weeks, I lost 21kg, which was a huge emotional journey. I've successfully reached the weight I was 25 years ago. Before I started The Fast 800 Programme, I was overweight and lethargic. I had issues with my thyroid and pain in my hips and knees (so much so, it was painful to walk). I had no self-discipline when it came to eating and I knew it was time to do something about my health.”

Finding better health shouldn't leave you feeling tired and hungry. Start your personalised programme and finally find what works for you.

Join today and have your meal plan and shopping list in minutes!

Consult your healthcare professional before beginning any diet or fitness regime. Any advice given is general in nature and not meant as a substitute for care by your usual health professional. For any further questions, please email us at info@thefast800.com

FAQs: https://thefast800.com/frequently-asked-questions/
Privacy policy: https://thefast800.com/privacy-policy/
Ts&Cs: https://thefast800.com/programme-terms-conditions/ and our Medical disclaimer: https://thefast800.com/medical-disclaimer/
Updated on
Mar 24, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity
This app may collect these data types
Personal info, Financial info and 4 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

5.0
497 reviews
Eve Boggenpoel
March 2, 2025
I'm a big F8 fan. As others have said, the programme works well, and the recipes are great, but the app is overdue an upgrade. Swapping out recipes is clunky, and you really need the option to add in your own ( l use all 3 F8 recipe books). After all the work it takes to fine-tune the week's meal plan, the option to save and reuse another time would be good too.
2 people found this review helpful
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Liesel Teversham
December 26, 2024
Brilliant App. Works easily. Sometimes the search for recipes is slightly unintuitive. The rest of the functions work so well. One irritation at the moment is that on every screen change, the app asks me to rate it... No matter whether I say "no thank you" or "remind me later". I have already rated it, yet it keeps asking again.
6 people found this review helpful
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The Fast 800
January 23, 2025
Hi Liesel, Thanks so much for your review and feedback. We will take this on board. Regarding the rating issue you are seeing, please could you update your app to the newest version, this should stop this from happening. Kindly, The Fast 800 Team :)
Jennifer Edmonds
January 7, 2025
I find this app very useful meal planning and keeping me on track with my weight goal. I really like how I can change the number of servings and swap out meals. I also find useful the articles that are provided in the resource library to help better understand the holistic approach managing my health.
4 people found this review helpful
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What’s new

Bug fixes and performance improvements