RUBI by Kandypens | Performance Beyond Expectations

RUBI by Kandypens review intro

The RUBI is an open-system pod vape perfect for using your own nic salts or any ejuice. It comes with a 1 mL empty pod and a universal micro-USB charger. It’s slightly larger than the JUUL but more ergonomic with rounded edges. It also has a larger e-juice capacity, more airflow, and longer battery life at 280 mAh. And speaking of the battery, Kandypens states that it comes with a lifetime warranty.

Although it may look like a JUUL, the RUBI is different. It even works with concentrates. But my usage is strictly about the juice.

On pre-order: $49.95

Empty pod: $9.95

RUBI by Kandypens specs and features


  • Patent Pending Elegant Design
  • Super Compact: 100 mm x 17 mm x 8.5 mm (Only 4 inches tall)
  • Universal Micro-USB Charging Port
  • LED Battery Indicator
  • Developed & Designed in the USA
  • *Only one RUBI per household, sorry


  • Refillable 1 mL Capacity Pod
  • Leak-Proof Pod Design with Air Carb
  • Lifetime Warranty (Battery)
  • Leak-Proof Pod Design with Air Carb
  • Draw Activated (No power button)
  • Ceramic Coil with Japanese Cotton
  • Charges in under 1 hour 20 mins

Vape what you want

Filling and refilling the pods is simple. Choose your ejuice, then just pull off the side rubber stopper, fill with a needle-tip dropper, replace, then pop the pod in with a satisfying snap. In the week I’ve used it as an ADV, I haven’t had the slightest leak. No condensation or wet contacts. Also, there’s been no spit back like so many other similar devices. Juices from 50% VG to 70% VG have worked like a charm. No dry hits so far.

Small device, big vapor

These pods work well! One has lasted me a week so far with no drop off in performance. Utilizing a ceramic coil wrapped in organic Japanese cotton, the RUBI’s given me solid flavor and incredible vapor – easily the biggest clouds I’ve seen from a device this size. The draw is like 1.5x as open as the JUUL, but it’s still good for MTL or even restricted lung hits. It’s kinda remarkable for such a small thing.

Just trying to find objective cons about the device feels forced. I do wish it had pass-thru charging, but that’s a pretty weak gripe. Especially when it doesn’t use a proprietary charger like so many others. The only other objective issue I have is that there’s no visible window to monitor your juice level. But it’s no biggie. Simply pop out the pod to see how much juice is left. When the flavor drops a little, that’s when the pod is getting low.


I gotta give props to Kandypens for this device. It’s designed and built well. And the performance has been consistent. Although I’ve only used it for a week so far, I’ve purchased several pod vapes that barely work on the first day. Dribbling e-juice in the mouth. Weak hits. Dry hits. Misfires. Leaking! It goes on and on.

The RUBI has been free from of all that. I’m impressed… not because it performs how it should but because it performs better than I thought these devices could. I strongly recommended the RUBI if you are into these kinds of devices and want to be able to use your own e-juice.

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I'm the chief editor here at Vaping360 and I reside in southeast Michigan. I've been vaping since my first ecig purchase in 2010. For more reasons than I can list, vaping has been a lifesaver for me. Now, my goal is to help other smokers make the switch.

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Want to love this thing, just cant make it work for me. Almost no vapor, its like sucking in fresh air.


I completely agree (using nic salts). Also, the battery lasts much less than a day, and if to charge in the evening – the light will blink red in the morning even without vaping

Jeremy Mann

Are you using regular ejuice?


Sorry to hear. This is not typical at all. Please contact customer support on the KandyPens website and they will send you a few replacement pods. Tell them Graham sent you. 🙂


Not sure how replacement pods is going to help me, best guess is the unit is defective. Emailed them at the address supplied in the kit, but gmail says the address is not accept requests to connect.


The correct email is [email protected]. Try calling them on Monday at 855-526-3904 during normal business hours. They can assist you. Question: What are you using in the RUBI? If you watch all the review videos you will see the huge clouds people are getting so it must be the liquid or a defective pod. Either way, KandyPens customer support is the best in the industry and they will get you fixed up. 🙂


Tested with 4 pods, so unlikely to be bad pods unless its a bad batch. More likely a defective battery. Spoken with two people who report the same issue. Juice is varied from DIY to Elements NS20.

Im UK based, so will await their response.


How many refills did one pod last and where is the LED battery indicator and how does it work?


Are you kidding me? You must have either:

A) gotten a faulty device and or battery, or pod (sometimes 3rd party sellers can be “sketchy”; I’m not sure where you purchased it from

B) You did something wrong… period

This hybrid pen pod mod (1000000 similar but better than Juul) produces clouds.

I’m sorry to say, but this is the 2nd vape I’ve bought, and I plan on sticking with it.

It’s small and concealable, refillable (I’ve gotten way over 15 refills, as I chain vape)

MOSTLY IT PRODUCES CLOUDS OF VAPOR. Probably just as much as, if not only slightly less clouds than those stupid big sub ohm tanks, meant for hipsters trying to look.

I’m sorry but I don’t see what the problem is.

Contact KandyPen customer service and get a new kit and pod.

I love this device and don’t see many people using it, which I like. It’s my original vape compared to teenie boppers stuck on the Juul, and hipsters using their tanks.


Jeremy Mann

I’ve had about one refill every other day the past two weeks.

The LED is the “k” seen in the pictures. It glows white while drawing on the device. It turns red when the power is depleting (maybe around 20% life left).

How it works is the same as other devices similar to it. There is a battery, a pod that houses a wick, coil, chimney, and a reservoir for filling with your liquid (essentially the pod’s “tank”).

The vape happens with a simple pull. It’s a draw-activated device which means there are no buttons. Air comes in from little holes on the side of the device, then into and up through the pod hitting the coil, and producing vapor.

The cool thing about vaping is that description is (for the most part) the same for most of these kinds of devices. Just a tweak here or there. But fundamentally the same.


Is this for e-liquids or something funky?

Jeremy Mann

Yes, for eliquid. “The RUBI is an open-system pod vape perfect for using your own nic salts or any ejuice.” Nic salt is just a type of nicotine (like in the JUUL, PHIX, or like Mr.Salt Eliquid).

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