Updated September 30, 2026 · ThriveCue Editorial Team
Gruns vs MaximumSlim
Gruns vs MaximumSlim: the differences
| Compare |  Gruns | MaximumSlim ReviewVisitVisit |
|---|---|---|
| Price from | $29.99 | $19.99Lower |
| Price per serving | $1.07Lower | $1.67 |
| Subscription discount | 55%Higher | 20% |
| Certifications | Nsf, Gmp | Organic |
| Money-back period | 30 days | 60 daysHigher |
| Third-party tested | Yes | Not confirmed |
| Markets | US | Not confirmed |
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Key differences
- Gruns scores higher overall: 9.4 vs 9.1.
- Price from is lower at MaximumSlim: $19.99 vs $29.99.
- Price per serving is lower at Gruns: $1.07 vs $1.67.
- Subscription discount is higher at Gruns: 55% vs 20%.
- Money-back period is higher at MaximumSlim: 60 days vs 30 days.
- Support channels: only Gruns offers Phone, Chat.
- Certifications: only Gruns offers Nsf, Gmp.
- Certifications: only MaximumSlim offers Organic.
- Products: only MaximumSlim offers Multivitamins, Electrolytes, Probiotics.
- Diets: only Gruns offers Vegan.
Our verdict on each
Gruns
Gruns is a US supplement brand that suits adults who want a single daily routine covering greens and vitamins minerals at a serving cost of $1.07. Third-party testing and certification to nsf and gmp back it up, and the money back window gives time to judge it.
MaximumSlim
MaximumSlim suits US buyers who want a broad supplement range at a low entry price and a per serving cost that repeats cheaply. The brand scores 9.1 overall, with a starting price of $19.99 and a 60 day money back window on the Original Green Coffee line.
Score breakdown
| Area | Gruns | MaximumSlim |
|---|---|---|
| Cost | 9.1Entry price of $29.99 and a serving cost of $1.07 put the monthly outlay in the middle of the field. | 9.1Entry price of $19.99 and $1.67 a serving carry the 9.1 score. |
| Offer | 9.5HigherProduct types run to greens and vitamins minerals and third-party testing is stated across the range. | 9.1multivitamins, vitamins minerals and greens across the catalogue, plus 20% off subscriptions, backs the 9.1 score. |
| Trust | 9.7HigherCertification to nsf and gmp and a 30 day money back window sit behind the brand. | 8.8organic certification and gluten free labelling underpin the 8.8 score. |
How they place
| Ranking | Gruns | MaximumSlim |
|---|---|---|
| Vitamins and multivitamins | 15 of 362 | 3 of 362 |
| Gut health, greens and collagen | 15 of 172 | 4 of 172 |
Feature by feature
| Certifications | Gruns | MaximumSlim |
|---|---|---|
| Nsf | Yes | No |
| Gmp | Yes | No |
| Organic | No | Yes |
Also worth a look
FAB CBD has subscription discount at 33.6% to 82.6%, against 55% for Gruns and 20% for MaximumSlim.
FAB CBD reviewEvery fact side by side
| Fact | Gruns | MaximumSlim |
|---|---|---|
| Products | Greens, Vitamins minerals | Multivitamins, Vitamins minerals, Greens, Electrolytes, ProbioticsCovers more |
| Diets | Vegan, Gluten freeCovers more | Gluten free |
| Legal entity | Gruns Nutrition, Inc. | Maximum Slim, LLC |
| Headquarters | United States | United States |
| Support channels | Email, Help centre, Phone, ChatCovers more | Email, Help centre |
Sports nutrition
| Fact | Gruns | MaximumSlim |
|---|---|---|
| Protein per serving (g) | Not confirmed | 26 |
Where each stands against the rest
| Fact | Gruns | MaximumSlim | Median |
|---|---|---|---|
| Price from | $29.99below the median | $19.99lowest quarter | $42.95 |
| Price per serving | $1.07below the median | $1.67above the median | $1.46 |
| Subscription discount | 55%highest quarter | 20%above the median | 15% |
| Money-back period | 30 daysat the median | 60 daysabove the median | 30 days |
Median across 167 listed brands.
Pros and cons
Gruns
Pros
- Covers greens and vitamins minerals in one brand, so a daily routine does not need splitting across makers.
- Third-party testing is stated, and the products carry nsf and gmp certification.
- Subscription orders are reduced by 55%, which is the cheapest way to hold the daily price at $1.07 a serving.
Cons
- Gruns sells in US only, so buyers elsewhere cannot order from the brand directly.
- The subscription discount of 55% is tied to repeat orders, and the entry price of $29.99 is the figure at the top of the range.
- Product types cover greens and vitamins minerals, and a wider range sits at DocMorris, which lists multivitamins, vitamins minerals and omega 3.
MaximumSlim
Pros
- Entry price of $19.99 ranks 37 of 157 brands, so a single pack is an easy outlay.
- A subscription takes 20% off later orders, lowering the renewal side of the bill for regular buyers.
- The range covers multivitamins, vitamins minerals and greens, far broader than ProSolution Plus, whose catalogue is vitamins minerals.
Cons
- Per serving ranking of 85 of 121 is weaker than the entry price ranking, so daily use costs more than the pack price implies.
- Support runs on email and help centre, with no phone or chat line in the listed options, so quick answers depend on written replies.
- Product types stop at multivitamins, vitamins minerals and greens, while DocMorris lists multivitamins, vitamins minerals and omega 3, so sleep, stress and collagen buyers get nothing from this range.
Who each suits
Gruns
Who it suits
- US adults who want greens and vitamins covered by a single daily subscription rather than separate products.
- Vegan shoppers and anyone avoiding gluten, as the range is vegan and gluten free.
- Readers who care about independent testing and named certification, since the products are third-party tested and carry nsf and gmp.
Who should look elsewhere
- Buyers outside the US, since Gruns operates in the United States only.
- Shoppers who want a single specific product such as omega-3, probiotics, collagen or electrolytes, which sit with DocMorris at multivitamins, vitamins minerals and omega 3.
- People who would rather test a men's health brand such as ProSolution Plus or TestRX, where vitamins minerals and vitamins minerals are the only listed types.
MaximumSlim
Who it suits
- US buyers who want multivitamins, vitamins minerals and greens ordered from a single supplier
- Daily supplement users who judge cost by $1.67 a serving rather than the pack price
- Shoppers who want a 60 day money back window before committing to a greens coffee order
Who should look elsewhere
- Buyers after sleep, stress or collagen lines: DocMorris lists multivitamins, vitamins minerals and omega 3, none of which the MaximumSlim range covers.
- Shoppers who want a short, single category catalogue: ProSolution Plus stays on vitamins minerals and keeps the range narrow.
- People who only want vitamins and minerals listed: TestRX covers vitamins minerals and nothing wider, which is simpler to shop.
Current offers
Gruns
Current offer
Discount code
Save 55% on your first order (SMS signup): 55%
Sign up for the SMS offer; by providing your number and clicking the button you agree to receive recurring auto-dialed marketing SMS. Offer assumes customer has received and uses promotional SMS discount reserved for new customers only.
Source, checked September 30, 2026
Country by country
| Country | Gruns | MaximumSlim |
|---|---|---|
| United States | Yes | No |
Questions about each
Gruns
How much does Gruns cost at the point of buying?+
The entry price is $29.99 across the collection. That is the figure a reader meets first when ordering. Once a routine is running, the cost that matters is the serving price of $1.07. Keep the two apart, since they are different numbers for different stages of buying.
What does a Gruns subscription cost over time?+
Repeat orders carry a discount of 55%, and that is the route that holds the serving price down. A one-off order pays the entry price of $29.99 instead, so the ongoing figure only applies on a schedule. A 30 day money back window gives a first order time to be judged.
MaximumSlim
How much does MaximumSlim cost to start with?+
The Original Green Coffee pack is listed at $19.99, and each serving works out at $1.67. Buyers sampling a single product can judge the outlay from the pack price, while daily users should read the per serving figure, since that is the line that repeats.
What does subscribing change on the bill?+
A subscription takes 20% off later orders, so the entry price and the renewal price are separate figures. Shoppers who will reorder can plan around the lower number, and shoppers who expect to stop after a short run of orders should not count on the saving.