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Written by: Steph Gregerson on Nov 19th, 2021

SlimFast vs. Nutrisystem 2021: Comparing Weight Loss Programs

With so many weight loss programs available, it’s important to look for the ones that have proven results over time. Both SlimFast and Nutrisystem have been in the game for decades with tons of success stories to go with it. But which one is best for you?

After researching the pros and cons of each program, I’m sharing some of the most important differences to help you make the decision.

SlimFast has a cheaper price tag but requires some prep and shopping. Nutrisystem is more expensive and sends all meals and snacks for a month, so there isn’t much wiggle room for spontaneous takeout nights (but maybe that’s a good thing).

At a Glance: SlimFast vs. Nutrisystem


SlimFast

Nutrisystem

Dietary preferences

Vegan, Gluten-free, Diabetes-Friendly, and Keto options available

High-Protein, Vegetarian, Wheat-Free, Low Glycemic

Menu variety

Shakes, savory snacks, and sweet snacks to choose from for two meals per day

Breakfast, lunch, dinner, and snacks, five or seven days per week

Starting price

$4.99 per day for the 14-day starter kit; $8.46 per day if you have two shakes and three snacks per day

$9.74 per day

Shipping cost

Varies by vendor. Free on orders over $99 at the Slim Fast online shop, and $7.95-$13.95 for smaller orders

Free

Prep time

No time, just open and enjoy

3-5 minutes per meal

Special discount

n/a

50% Off All Plans + Free Shipping!

Dietary Preferences

SlimFast is a weight loss program where you’ll replace two meals a day with one of its meal replacement shakes and then prepare one meal of about 500 calories. It also includes a selection of snacks to help curb your appetite throughout the day.

You can enjoy SlimFast products even if you follow a restrictive diet. The shakes and snacks are keto-friendly and there are many gluten-free and vegan options available, too. If you're diabetic then you can select the specific diabetic weight-loss plan.

With Nutrisystem, you'll find different plans for men and women. In addition, there’s a vegetarian plan and a diabetes-friendly plan to cater to some dietary restrictionss. Get a full breakdown of the plans available in our Nutrisystem review.

Each menu item provides information on the macros and highlights which diets it’s suitable for. You’ll also find a Q&A section (where you can ask questions about the meal and see what others have asked) and a full breakdown of all ingredients, nutritional facts, and prep information.

Nutrisystem wins this category thanks to its multiple plans and useful menu filters.

Winner: Nutrisystem

Menu Variety

SlimFast offers a selection of products that you can mix and match depending on what you feel like each day.

The shakes come in flavors like Creamy Chocolate and Mocha Cappuccino and the bars come in a variety of different flavors. The Keto Fat Bomb bar is available in five flavors including Whipped Triple Chocolate and the Diabetic Weight Loss bars include flavors like Peanut Butter Chocolate.

You can find both sweet and savory snacks like the Strawberry Topped Cheesecake Mini Snack Bars or the Keto Fat Bomb Real Cheddar Cheese Crisps. These low-carb snacks sound decadent and help keep you full while still fitting the SlimFast plan.

Nutrisystem’s plans include all of your daily meals and snacks – you can choose if you’d like to cover five or seven days a week. The breakfast menu offers 26 different options with a mix of sweet and savory depending on your preference.

You’ll find a similar variety in the lunch and dinner menus. There are soups, sandwiches, salads, pasta, and more. Snacks are also included in the plan and you can order an assortment of salty items like nuts, and some sweet items like cupcakes and cookies. The menus don’t change much from week to week, but they’re extensive (100+ items) and new items are added often.

Winner: It’s a tie!

Starting Prices

SlimFast offers a wide selection of buying options, but if you’re going to fully commit to the program, I’d recommend investing in one of the starter kits to get the best deal.

The Favorite Foods 14-Day Starter Kit comes with a 14-day supply of meal replacements and snacks for one person. It’s $69.99, so $4.99 per day for the necessary supplies. Remember that you’ll need to use your own milk to mix the shakes with and you’ll be preparing a 500-calorie meal once a day as well, which is an extra expense.

Nutrisystem outlines each plan with a daily price and you can choose between five or seven days worth of food each week. All plans include fully prepared food for breakfast, lunch, dinner, and snacks, weight loss coaching, free shipping, and access to the app with food logging and fun challenges.

The upgraded plans have a wider variety of menu selections including frozen meals. The Uniquely Yours Max+ is the only option that comes with personalized nutrition and access to the premium frozen meals called Hearty Inspirations.

Nutrisystem is more expensive as a daily option, with prices from $9.74, but you'll receive three meals each day and snacks so you won’t need to do any additional grocery shopping.

SlimFast comes in at $4.99 per day and includes two meal replacements and snacks. With SlimFast, if you can keep your third meal under $4 worth of groceries, this can work out as the more affordable option.

Winner: SlimFast

Delivery and Packaging

SlimFast offers the full range of products available to order on its website. It’s also extremely convenient because you can pick up products at national retailers including Target, Walmart, Kroger, and Amazon (to name just a few.)

These retailers offer delivery if you want it shipped directly to your doorstep, or you can pick up items as you need them throughout the week.

If you’re looking to save on the single-serve plastic containers that the premixed shakes come in, you can select the shake mix, which comes in a tub with multiple servings.

Nutrisystem ships every four weeks, so you’ll be sent enough meals for a month and shipping is free with all plans.

Each meal is packaged separately, so there’s a large amount of waste. Some of the single-serve packaging is recyclable in some municipalities, but not everywhere.

SlimFast comes with some options to cut down on the amount of packaging, plus there’s the convenience of being able to pick up products at many local retailers (and with less packaging than an at-home delivery).

Winner: SlimFast

Meal Prep

SlimFast products are extremely easy to prepare. The only items that aren’t ready to eat immediately are the shake mixes. Those require a glass of milk and a spoon to mix the powder into the liquid.

The ready-to-drink shakes should be stored in the refrigerator, but everything else can be stored in your pantry or even your desk drawers at the office.

Nutrisystem labels each of the meals with a color-coded label to help you quickly find what you’re looking for. Each of the meals is ready to eat in just a few minutes and requires little to no meal prep. The most you’ll need to do is heat them in the oven or microwave.

Each menu item has a prep method section with instructions. You’ll never be doing any chopping or mincing, so it’s perfect for those looking for something easy and simple.

Both services have simple, ready-to-eat meals, but Nutrisystem wins in this category because it includes every meal. With SlimFast, you’ll still need to prep and make your single, main meal of the day, which requires planning, shopping, and cooking.

Winner: Nutrisystem

The Bottom Line

When searching for a weight loss meal delivery service, you’ll find Nutrisystem and SlimFast on many different best-of lists. Both have been in business since the 1970s and have delivered proven results.

SlimFast is ideal for people who want a few meal replacements but still want to do their own cooking for one meal per day. But overall, Nutrisystem is a better option. By including all your meals and snacks, it’s the most foolproof way to lose weight and it’ll help you create long-term sustainable habits to stay healthy.

If you want to do more prep work in the kitchen and cook for yourself, a meal kit might suit you better. Check out our list of the best weight loss meal delivery services for more alternatives.

Overall winner: Nutrisystem

About The Author

Steph Gregerson

Contributing Writer, Delivery Rank

Steph is a book nerd, rule follower, and pizza lover who can’t get enough of playing outside. She was raised on the ice rinks of MN and currently resides in sunny San Diego. As a freelance writer, she loves research, producing content, and organizing information for a wide variety of clients. She currently has at least 10 browser windows open at all times.

Steph is a book nerd, rule follower, and pizza lover who can’t get enough of playing outside. She was raised on the ice rinks of MN and currently resides in sunny San Diego. As a freelance writer, she loves research, producing content, and organizing information for a wide variety of clients. She currently has at least 10 browser windows open at all times.
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