The Fast Metabolism Diet User Reviews

Customer Experience

Positive experience42.5% of reviews
Neutral25.8% of reviews
Negative experience31.7% of reviews

~ Based on 120 written reviews from the US App Store.

What users say

Is The Fast Metabolism Diet Safe?

The Fast Metabolism Diet has mixed safety signals based on user ratings. AppsHunter Safety Score for The Fast Metabolism Diet is 68/100.

This assessment is based on 186 user ratings, with an App Store average of 3.4/5.

Safety Analysis

51.1% of ratings point to a safe experience
19.4% of ratings suggest some concerns
29.6% of ratings point to a risky experience

~ Based on 186 App Store ratings for The Fast Metabolism Diet.

Is The Fast Metabolism Diet Legit?

The Fast Metabolism Diet appears legitimate, with a few gaps. AppsHunter Legitimacy Score for The Fast Metabolism Diet is 78/100.

Based on 78 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

I Would Like This A Lot More If...

I like the app. It is a little clunky but it works. I would like it a whole lot more if they just added a feature to save my meal. If I make a meal that meets the requirements and I enter it, I want to be able to save that meal so that I don't have to enter it item by item every single time I eat that meal. If I could save a meal bank for each phase that I could then go in and click if I was going ti eat that again and it would automatically check all the boxes for chicken, brown rice, tomatoes, etc, I would be super happy and give it 5 stars. As it is, I am just slightly annoyed and give it three.

ETA: I also wish it had a graph that tracked weight.
Show more

I Would Like This A Lot More If...

I like the app. It is a little clunky but it works. I would like it a whole lot more if they just added a feature to save my meal. If I make a meal that meets the requirements and I enter it, I want to be able to save that meal so that I don't have to enter it item by item every single time I eat that meal. If I could save a meal bank for each phase that I could then go in and click if I was going ti eat that again and it would automatically check all the boxes for chicken, brown rice, tomatoes, etc, I would be super happy and give it 5 stars. As it is, I am just slightly annoyed and give it three.
Show more

Just WOW!

I stumbled across this three years ago.

I was overweight and my husband was dangerously overweight with type two and other maladies exacerbated by the poor way that he ate.

I've had to be more careful about things I ate due to Crohn's and a stenosis in the gut where they removed a portion and put me back together.

But we were both in need. I showed him the article which I probably found in a woman's day magazine.

I was shocked when he told me he believes he could do this.

Together we lost a ton of weight.

Life happened and we derailed due to family death and sale of home and a huge move which caused less time to cook and pay attention to our bodies.

I lost my hubby in May, I continued to lose weight but I've put on about eight pesky pounds and I need to eat better so I'm starting this again.

I can't say ENOUGH about the energy we had during the months that we followed this plan.

From the bottom of my heart I thank you. It's simple to follow and though there are a couple days where your mind thinks you're depriving yourself, the other five days make up for it.

If you want to lose it, this IS the key. Tricking your metabolism.

Don't go your whole life feeling miserable and not liking how you look like in the mirror. I was old when I started this. I regret not learning about it years ago.

This is it and it was inexpensive. You feel a difference from week one and it only gets better.

Highly recommend!!
Show more

More foods

I’ll being using this app since 2016, and still there are some some fruits, veggies and other things that are not included, and it is a little frustrating because I want to consume them but I don’t know under which phase put them.

Update app

Please update the app. It’s slow and it doesn’t seem to work right away when you click on a button.

Amazing

We love this ap! So easy to keep track of your foods and times you eat, it’s my favorite!

Needs update!

I have been doing this diet plan for years and the app looks the same as it did when I purchased it over 5years ago. The investment users are making into books, shakes etc the least that could be done is a more modern and updated app.!

App Issues

I like the diet and app, but two things.

First, the app has been opening to yesterday rather than today, and it has been doing that since I restarted the diet. (I don’t know if this makes a difference, but I traveled across two time zones when starting this time). Second, the Phase 3 breakfast meal “B and B Toast” wrongly populates as having a protein (it doesn't) and leaves the fruit section empty despite the recipe including berries

Other than these glitches, the app is always helpful to doing the diet
Show more

Simple app but it works!

I’m writing this review as it is the 10 year anniversary of the Fast Metabolism Diet book. I preordered the first edition and did a few rounds of the diet the past 10 years. I want to say that the diet works and this App, although not perfect, is a great tool at your fingertips.
I put on Covid-Menopause weight and although I have not re-read the book entirely, I’ve been on this diet non-stop for the past 7.5 months just following the app prompts, and have lost 40+ lbs so far. I praise this diet to anyone who wants to hear how I did it.
The app does need an update, but it works nonetheless.
Show more

This app is useless except for planning

My husband and I are doing this diet. We read the book. We downloaded the app to facilitate things. We’ve been very frustrated with it. Really, all it’s good for is meal planning, and that is absolutely it, and even if that’s all you’re using it for you’ll be frustrated.
Pros: water tracker, planning times/foods for meals.
Cons:
1) You’re not really “tracking” your food if you can’t enter everything that you eat, even if it’s something that’s not supposed to be there. There should be some way of entering foods that are either off-limits or out of phase. (Side note: I’m pretty sure you can email your data to the company so they can analyze what you’re eating…what good is that when you cannot truly track things?)
2) In that same vein, it doesn’t let you track your portions. That’s fine if you’re someone trying to lose 20 pounds or less (1 portion), but as she says in the book, if you’re trying to lose more than that, you will need to increase your portion sizes. Well…you can’t track portion sizes here.

I have many more gripes with it but those are the biggest.
I do think this is a good way of eating so far, so I give the diet a hesitant thumbs up (only in week one) but this app needs some work.
Show more

Recipe

Hello I can’t find all the recipe in the list on the app so I can log it in

Love this app!

This app keeps me on track with planning and staying on course!

Glitchy and outdated

The calendar gave me two days or phase one and pop up to buy supplements. Not a good start.

What a shame, I was really excited to use it. The plan is the healthiest I’ve seen, ever. It’s not easy and a solid tool would make the FMD much more comprehensive.

This definitely hurts the brand.

This really works if you follow it to the letter

A friend of mine had lost weight quickly and told me about this app. I don’t know how it works, but it does. I was approaching 200 pounds, the first 4 days I lost 3 pounds. I kept with it, ended up losing 30 pounds. Note I did also increase my exercise, but not at a crazy amount to where I would’ve lost that much weight without following this program.
Show more

Love the App but wish it had a copy feature

The App was a life saver. I love the plan with the check boxes. I love that you can customize the food list to remove the foods I don’t eat. The grocery list is a great feature too. My only wish is if it could copy meals since I eat a lot of the same foods.

App needs an update

Love this app as it’s easy to log and keep up with the Fast Metabolism journey! But it seems very outdated and needs a re-vamp.

So frustrating to use

I keep a night owl schedule which has me going to bed at 4 am and getting up a little after noon. My first meal would be 1 pm but the app doesn’t allow that. I shifted times earlier in order to plan, but the app uses my device’s clock time to show the meal it thinks I should be having instead of the one I’m actually at. So, at 1 pm when I would be having my first meal, it will only show the snack I’m supposed to have at 3 (noon start is latest it will allow for breakfast). I’d just like to enter meals by sequence without a set time. Doing the actual planning is also very frustrating. The app has little flexibility and is hard to use so I’ve decided to delete it and go back to my notecard and Excel strategy for meal planning.
Show more

My Normal is not App’s Normal

I thought I had a sleep disorder. Until I realized it is “my normal” to be wide awake at 1 am.
The App refused to allow my first meal input with 30 minutes of waking at 1.00am. Oh, well I will track the FMD using pen and paper.

App issues

The app will not close once open. The only way to close it is to turn the phone off

I really like this app.

This app really helps with meal planning, portion sizes, and timing of meals.