KOIOS 850W Bullet vs Ninja QB3001SS Fit Side-by-Side Comparison

Tina Pham
Tina Pham
Reviewer
Nguyen Ntk
Nguyen Ntk
Visual Specialist
Reviewed
Our recommendations are made independently through research and testing following our review procedure. We may receive commissions from purchases made via our links at no additional costs to you.
Tested Using Methodology v1.0
Updated Dec 1, 2022
Tested Using Methodology v1.0
Updated Nov 29, 2022
Koios Pro Bullet Personal Blender Review
Ninja Fit Personal Blender In-depth Review
Blender type
personal
personal
Power
850W
700W

Our Verdict

7.4
Overall Score
  • Performance (60%)
    7.1/10
  • Design (25%)
    8.3/10
  • Usability (15%)
    7.3/10
9.4
Overall Score
  • Performance (60%)
    9.6/10
  • Design (25%)
    9.5/10
  • Usability (15%)
    8.5/10

These two blenders share the same market, but the Ninja QB3001SS Fit seems to look sturdier, and in our tests, its results were much better than those produced by the KOIOS 850W Bullet. 

Whether we tested it for processing frozen fruits, or oatmeals and raw nuts, it stood out from its rival with a faster blending performance and smoother outcomes. Its ice-crushing capability, though, is something that KOIOS’s owners will have to go without. 

However, that does not imply that the KOIOS 850W Bullet is inferior, especially since this blender produced acceptably even blends, except for the fibrous greens and ice crushing tests. We don’t recommend it over the Ninja QB3001SS Fit simply because it’s not as good value for the money.

Performance

7.1
Performance Scores
  • Protein Shake (40%)
    9.2/10
  • Frozen Fruit Smoothie (30%)
    8.0/10
  • Fibrous Greens (20%)
    5.0/10
  • Crushed Ice Cubes (10%)
    0/10
9.6
Performance Scores
  • Protein Shake (40%)
    9.6/10
  • Frozen Fruit Smoothie (30%)
    10/10
  • Fibrous Greens (20%)
    9.5/10
  • Crushed Ice Cubes (10%)
    9.0/10
9.2

Protein Shake

9.6
KOIOS 850W Bullet Protein Shake
KOIOS 850W Bullet Protein Shake 1
  • Blending Time: 56 seconds
  • Result: Smooth

The KOIOS can make a good breakfast or post-workout milkshake in a matter of seconds. In this test, it took less than 1 minute to break down and combine all the ingredients, which was faster than most. The powerful motor couldn’t quite remove all lumps from the protein shake, but only a few chunks remained unblended, so our drink was still pleasant to drink. Moreover, the residual solids didn’t affect the tasting experience much — they were so tiny that they didn’t bother us at all.

Ninja QB3001SS Fit Protein Shake
Ninja QB3001SS Fit Protein Shake 1
  • Blending Time: 50 seconds
  • Result: Silky Smooth

No matter what ingredients you have on hand for your protein shakes, the Ninja QB3001SS Fit will quickly turn them into a chunk-free mix. Its impeccable performance in this test is evidence of that. Consisting of the toughest-to-blend ingredients, our recipe presents a high level of difficulty, but it still didn’t give this blender any trouble.

Our Ninja took only 50 seconds to churn out the desired result. The oatmeal was completely broken down while almonds and berries were blended to their finest state. After straining the drink through a strainer, we found a smattering of partially blended chunks, but we don’t think it's enough to turn off many folks. Given such a result, this machine is a worthy competitor to the NutriBullet — our favorite personal blender at the time of writing.

8.0

Frozen Fruit Smoothie

10
KOIOS 850W Frozen Fruit Smoothie
KOIOS 850W Frozen Fruit Smoothie 1
  • Blending Time: 1 min 20 seconds
  • Result: Silky Smooth
  • Suction:

The KOIOS Bullet brought all the ingredients together for a great-tasting smoothie in one minute and twenty seconds. Of all the similarly-priced blenders we tested, it was the only one that could liquify frozen ingredients that quickly. Most were 20-40 seconds slower, but that can make a difference; frozen foods thaw quickly at room temperature, so the longer you blend, the more your smoothie will be diluted.

Simply put, the quicker performance of the KOIOS made for a thicker and more ice-cream-like smoothie. Chilly and fresh enough to quench our thirst, it also retained the texture that people look for in frozen fruit smoothies.

Ninja QB3001SS Fit Frozen Fruits Smoothie
Ninja QB3001SS Fit Frozen Fruits Smoothie 1
  • Blending Time: 1 minute
  • Result: Silky Smooth
  • Suction:

When it comes to preparing smoothies, this blender’s efficiency is something that we’ve all dreamed about, but never thought possible on a budget. In our test, it allowed for a quick preparation of frozen foods with very little effort thanks to its heavy-duty motor and sturdy blades. The compromise was that we had to pause now and then to shake chunks free from the blades.

The smoothie was ready to drink within 1 minute of blending, which was far faster than average. In fact, it was fully twice as fast as some other models like the Magic Bullet, the Hamilton Beach, and the Oster. You may think it doesn’t matter much to wait a bit longer, but actually, the difference in blending time between blenders did create a substantial discrepancy in the drink’s texture and temperature.

As a general rule of thumb, frozen foods thaw quickly at room temperature, especially when you start grinding them up. The faster your blender does its job, the thicker and less diluted your smoothie will be. 

Simply put, not only did the Ninja Fit blend smoothly, but its rapid operation also provided us with the thick, ice-cream-like consistency that we prefer in frozen fruit smoothies. If you’re craving icy-cold drinks on hot days, this blender definitely has the chops for it.

5.0

Fibrous Greens

9.5
KOIOS 850W Fibrous Greens
KOIOS 850W Fibrous Greens 1
  • Blending Time: 20 seconds
  • Result: Very Coarse

We evaluated how well this blender handled fiber by blending kale, celery, spinach, and water for 20 seconds. The mixture came out grainy with a substantial amount of partially blended particles. Then, we drained it through a mesh strainer and examined the pulp. It looked like green sand with a moderately coarse consistency. We didn't taste the mixture prior to draining, but this coarseness, together with the volume of pulp, meant this blender failed to extract most of the flavor from the greens.

We can’t say for sure if more blending time would improve the final result, but can conclusively say that 20 seconds worth of blending is not enough. By comparison, the Ninja Fit did the same job much better, leaving behind a significantly smaller amount of visible flakes. 

Our conclusion is that the KOIOS is just mediocre for blending leafy veggies. If you want to avoid leafy chunks in a quick high-fiber beverage, this is not the blender for you.

Ninja QB3001SS Fit Fibrous Greens
Ninja QB3001SS Fit Fibrous Greens 1
  • Blending Time: 20 seconds
  • Result: Very fine

The Ninja Fit is quite capable of incorporating leafy vegetables and other fiber-filled foods into your drink. Of all the blenders we tested, this was one of the few that could break down almost all of kale, spinach, and celery in only 20 seconds. The greens were blended finely and had consistent-sized grounds. Not only that, but it left us with only a little pulp that was too big to pass through a strainer — better results than even the Nutri Ninja.

0.0

Crushed Ice Cubes

9.0
KOIOS 850W Crushed Ice 1
KOIOS 850W Crushed Ice
  • Ice Fineness: Coarse
  • Unblended Ice: 77% of 6 oz

In this test, its performance was lackluster. The machine itself is incapable of crushing ice cubes. In fact, attempting to do so is not a good idea; the heavy-duty task can take a toll on your device and impair its performance in more ordinary blends.

Ninja QB3001SS Fit Crushed Ice Cubes 1
Ninja QB3001SS Fit Crushed Ice Cubes
  • Ice Fineness: Very Fine
  • Unblended Ice: 20% of 6 oz

In this task, this blender struggled quite a bit, and couldn’t quite power through all the ice cubes. A small amount of ice remained solid — accounting for 20% of the total — when it was all said and done. And again, we had to stop and shake the blending jar to promote the contact between the ice and blades.

Of all the blenders with small blending cups, however, the Ninja Fit was the only one that actually could perform that well. It even crushed ice as fluffily as its larger counterpart, the NutriBullet. With the Ninja Fit, you may no longer have to deal with whole ice cubes in your drink.

Design

8.3
design Scores
  • Blades (20%)
    7.5/10
  • Build Quality (60%)
    8.0/10
  • Blending Cup (20%)
    10/10
9.5
design Scores
  • Blades (20%)
    9.0/10
  • Build Quality (60%)
    9.5/10
  • Blending Cup (20%)
    10/10

In the Box

KOIOS 850W Bullet In the Box
  • Motor Base 
  • Two Blade Assemblies 
  • Four Lids 
  • Cleaning Brush 
  • Three Blending Cups
  • Recipe book & user guide
Ninja QB3001SS Fit In the Box
  • Motor base 
  • Extractor blade
  • Two blending cups 
  • Two to-go lids
  • Recipe book & User guide

Dimensions

KOIOS 850W Bullet Dimension
  • Height:
    12.2" (31.0 cm)
  • Width:
    5.5" (14.0 cm)
  • Weight:
    2.9 oz (82 g)
  • Shaft Length:

The KOIOS Bullet’s dimensions are about as standard as they come. At 12 inches tall by 5.5 inches wide, it is a typical size for a personal blender and can easily tuck away in your cabinet. Mobility is also very practical thanks to its compact form.

Ninja QB3001SS Fit Dimension
  • Height:
    13.0" (33.0 cm)
  • Width:
    4.5" (11.4 cm)
  • Weight:
    3.1 oz (88 g)
  • Shaft Length:

This blender isn’t as solid as the NutriBullet or the Nutri Ninja, but we appreciate its lighter weight and more compact dimensions. It is roughly the same size as a champagne bottle, so it should fit well into your cabinet. It also won’t occupy too much counter space and you can easily carry it around when you’re on the move.

8.0

Build Quality

9.5
KOIOS 850W Bullet Build Quality

Build quality is moderate, with a body mostly made of plastic. The stainless steel blades look promising in terms of durability and capability while the motor base is rather flimsy. However, despite that, this blender stands very firmly during operation. It doesn’t jump around while handling solid foods like most mid-range counterparts such as the Magic Bullet. 

We like the metal surface on the front of the motor base. It gives our blender a more attractive appearance and better quality feel. After a couple of months in the lab, this surface still retains its original shine — even after the occasional cleaning with a metal scouring pad.

The Ninja Fit Build Quality

Our Ninja Fit looks fancier than we’d expect for the price. The part quality resembles that of much more expensive units. The main body’s exterior is eye-pleasing with a glossy finish capable of holding up against dings or scratches. The interior is mostly made of plastic, but it looks robust, reflecting the blender’s high-tech design. Much the same can be said for the blending cup and extractor blade, too. These parts aren’t new ideas, but they should be the benchmark for durability and refinement in this price range.

7.5

Blades

9.0
KOIOS 850W Bullet Blade
KOIOS 850W Bullet Blade 1
  • Material:
    Stainless Steel
  • Type:
    Sharp Blade
  • Guard Material:
  • Blade Count:
    6
  • Removable:
    Yes
  • Dishwasher Safe:
    No

The KOIOS Bullet comes with two extractor blades: one is flat and the other shaped like a cross. 

The flat blade has two dull prongs tilted slightly upwards and is only compatible with the short blending cup. We haven’t performed any tests on it, but believe this add-on will be handy for grinding hard ingredients like coffee beans, raw nuts, and whole grains. The blender’s mighty motor and consistent performance suggest it should be able to handle such ingredients.

Most of your blended treats will be best served by the cross blade. With six sharp prongs, it contacts more food at any given moment, resulting in finer outcomes and faster blending times. That being said, it looks less sturdy than some models (particularly the Ninja Fit). More prongs also means you’ll have more nooks and crannies to weave in and out of when it comes to cleaning.

The Ninja Fit Extractor Blade
  • Material:
    Stainless Steel
  • Type:
    Sharp Blade
  • Guard Material:
  • Blade Count:
    4
  • Removable:
    No
  • Dishwasher Safe:
    Yes

The blade is constructed of hardened stainless steel. It features four prongs so you will get faster blending times and finer results compared than those that have only two. 

The base and blade assembly screws tightly onto the blending cup to prevent leaks while in use. It is designed for processing liquids, including juice, frozen mixtures, sauces, and hummus. It cannot be used to blend hot liquids or for grinding operations.

Motor Base

KOIOS 850W Bullet Motor Base
KOIOS 850W Bullet Motor Base 1
  • Rated Voltage:
    120 V
  • Rated Power:
    850 Watt
  • Working Time:
    ≤ 1 minute
  • Protection:
    No
  • Weight:
    2.4 lbs (1.1 kg)
  • Cord Length:
    4.1 ft
  • Extra Feature:
    suction feet, ventilation holes

The main housing of the KOIOS Bullet is made from medium-grade plastic, except for the front surface. It is a little smaller than other personal blenders, but could surprisingly tackle our tests without slipping or rocking around on the counter thanks to the four rubber feet at the bottom. 

Most models around this price cannot run continuously for more than one minute because the motor can overheat. The KOIOS Bullet is not an exception despite the fact that it’s equipped with many ventilation holes for better heat dissipation. If your drinks demand a longer blending time, make sure you let your machine cool down for 20-30 seconds after each 1-minute interval.

The Ninja Fit Motor Base
The Ninja Fit Motor Base Bottom
The Ninja Fit Motor Base Power Cord
  • Rated Voltage:
    110 - 120 V
  • Rated Power:
    700 Watts
  • Working Time:
    ≤ 1 minute
  • Protection:
    Yes
  • Weight:
    2.5 lbs (1.2 kg)
  • Cord Length:
    2.8 ft
  • Extra Feature:
    Rubber grips on the bottom, cooling fan.

The Ninja Fit is powered by a 700-watt motor which is more than enough to blend most simple ingredients. That motor is even strong enough to turn your blender into a standalone ice crusher, though we don’t recommend doing so too often since it might limit the blender’s lifespan. 

The elegant yet sturdy exterior is a key selling point over its rivals, but the carefully constructed interior is what truly grabs our attention. In particular, despite being made of ABS plastic, the black actuator tabs are unlikely to break even when you press the cup down into them vigorously. The rubber and plastic liners inside the power base feel pretty durable too. 

There are also rubber grips on the bottom that keep things steady while in use and a cooling fan in the back to limit overheating. Still, though, it’s best not to run it for more than a minute at a stretch.

10

Blending Cup

10
KOIOS Bullet Blending Cup
KOIOS Bullet Blending Cup 1
KOIOS Bullet Blending Cup 2
  • Material:
    Plastic
  • Capacity:
    10 oz, 17 oz, and 17 oz
  • Weight:
    0.2 lb, 0.23 lb, and 0.34 lb
  • Dishwasher Safe:
    Yes
  • Measurement:
    No
  • Suitable For:
    Small batches
  • Accessories:
    two spout lids, one flat-top lid, one sieve lid

In this set, there are two tall cups (17 oz) for blending watery mixtures and a short cup (10 oz) for grinding solid ingredients. The tall cups can be sealed tightly by either a flat-top lid or spout lid if you want to enjoy your drink on the go. And the short cup’s distinctive design looks lovely. It features a flat foot for increased stability and is particularly compatible with the sieve lid so you can use it as a shaker for ground spices like nutmeg, cinnamon, cocoa flour, ground coffee beans, or whatever seasonings you need.

The Ninja Fit Blending Cup
  • Material:
    Plastic
  • Capacity:
    16
  • Weight:
    0.6 oz (17 g)
  • Dishwasher Safe:
    Yes
  • Measurement:
    No
  • Suitable For:
    Small batches
  • Accessories:
    2 to-go lids

This set includes two blending cups with lids. Each has a 16-oz capacity and can be fitted to the blade assembly. The lids seal tightly to the cups, locking all the ingredients inside even when you turn them upside down. As a nice bonus, each lid has a flip-top spout.

Speed and Controls

  • Control Type:
    Push
  • Min Speed:
    N/A
  • Max Speed:
    N/A
  • Presets:
    No
  • Noise Level:
  • Digital Display:
    No
  • Pulse Mode:
    No

Like many personal blenders, the KOIOS offers only one speed option but doesn’t have buttons or any sort of controls. To blend, you simply press the cup down into the base, then hold it continuously until your smoothie is ready. The operating method is so simple that you may not need any practice. It’s easy to get comfortable with this blender.

  • Control Type:
    Push
  • Min Speed:
  • Max Speed:
  • Presets:
    No
  • Noise Level:
  • Digital Display:
    No
  • Pulse Mode:
    No

Because the Ninja Fit doesn’t have any switches or buttons, you only get a single speed. The motor is activated by simply pressing the cup down into the base. Your blender will then run until you take your hand off it. You can also simulate pulse mode by pressing and releasing the cup in short intervals.

Usability

7.3
usability Scores
  • Hands-Free Operation (60%)
    5.7/10
  • Assembly (20%)
    10/10
  • Cleanability (20%)
    9.5/10
8.5
usability Scores
  • Hands-Free Operation (60%)
    7.8/10
  • Assembly (20%)
    10/10
  • Cleanability (20%)
    9.0/10
5.7

Hands-Free Operation

7.8

You can’t walk away while the KOIOS Bullet does its job the way you might with a full-sized blender. It requires you to keep a hand on it the whole time. Plus, you may occasionally need to pause to remove the cup and give it a thorough shake. 

Particularly in the smoothie test, frozen fruits got stuck under the blade and jammed it up. To even out the blend, we had to shake the cup after every 20 blending seconds. It gave us a good smoothie in 1 minute 20 seconds worth of runtime, so the process demanded four intervals total. Reviewers make a fuss about the repeated delays, but they’re a common occurrence among personal-size blenders. As long as you’re willing to spend an extra minute or two in the kitchen, it shouldn’t be a big deal.

This blender doesn’t allow for hands-free operation; you’ll need to hold the cup in place throughout the operation to activate the motor, but this is true with most personal blenders. On the upside, it doesn’t demand too much extra shaking or stirring to dislodge chunks trapped on or around the blades. For the most part, each batch only needs a little shake to achieve a smooth consistency.

10

Assembly

10

Setting up this blender is a breeze. After twisting the blade assembly onto the cup, you’ll need to flip the cup over and place it securely onto the motor base, aligning the cup’s protrusions with the grooves inside the motor base. To start blending, gently push the cup down as long as you desire. Once finished, release the cup from the motor base and unscrew the blade assembly.

This blender is a cinch to set up. To blend, you’ll need to seal the blade tightly to the cup, then turn the cup upside down and place it on the motor base by aligning its tabs with the motor’s slots. Once your cup is correctly positioned, push it all the way down so it can begin blending. Removing the cup is even easier, simply lift it up from the motor base. You won’t need much practice to operate the machine smoothly — we figured it all out before even opening the user manual.

9.5

Cleanability

9.0

Of all the blenders we tested, the KOIOS is the only one with a blade that can be separated from its plastic base. It goes without saying, this can be a life-saver, especially since the blade assembly is not dishwasher safe. 

To remove the blade attachment from the base, push the blade gear forward until it falls out. Note that these two pieces screw very tightly together through a white gasket ring so you'll have to apply a significant force, which can be a challenge if your hands are weak or in pain. 

Once you’ve separated the blade attachment, plastic base, and gasket ring, they can be washed off easily with soapy water. The only parts that are tricky to clean are the blade’s undersides, but the included small brush will make life easier on you. 

The other pieces, including the lids and blending cups, can be put in the dishwasher.  For manual cleaning, just rinse them with soapy water.

All the parts are dishwasher safe except for the motor base, but note that they must be separated from each other before being placed in the dishwasher.

To clean them manually, simply pour warm water into the cup, add a bit of soap, and run the blender for 30 to 60 seconds. After dumping out the cleaning solution and rinsing the pitcher thoroughly, your blender will be ready for a new batch of smoothies. 

If you  don’t want to do it that way, we recommend using a dishwashing utensil dampened with soapy water to scrub out any stains. Getting under the blades can be tricky; be careful not to slice your fingers!