The VIVOSUN VCure and the Cannatrol Cool Cure both automate the dry-and-cure stage, holding an active vapor-pressure setpoint so flower finishes on its own instead of through daily jar burping. Both can connect to a phone app over WiFi. The VCure is a single, lower-priced unit built around an app-driven recipe engine; the Cool Cure is a three-model line built on dewpoint-based Vaportrol control. For a home grower deciding between them, the choice comes down to batch size, how hands-on you like to be with a cure, and budget.
Which One Should You Pick, in One Line?
Three honest reads before the detail:
- Lowest entry price and a recipe library: the VCure. One unit, five preset modes, and custom recipes you can save and share in the app.
- Dew-point cure and a lighter, stackable box: the Cannatrol Cool Cure. It dries, cures, and stores in the same box.
- Best finish without fuss: the Cool Cure C2, the stainless model with WiFi built in.
VCure vs. Cannatrol Cool Cure: Specs at a Glance
The differences that actually change your buying decision are storage capacity, how you control the cure, and price. Here is the head-to-head on verified specs, using the flagship stainless Cool Cure C2 as the Cannatrol reference. If neither box fits your batch size, the best curing machines for weed covers the rest of the field, from jar-top monitors to full cabinets.
Read across each row: same 2.5 lb wet batch and WiFi app control on both, and both keep dried flower in a Store stage afterward (up to 5 lb in the VCure, 4.5 lb in the Cool Cure). The Cool Cure weighs nearly 30 pounds less and stacks, while the VCure runs more accessibly priced with more shelves and a full recipe engine.
- Vaportrol (Cannatrol) is a dewpoint-based system: it holds a precise dew point so temperature and humidity stay balanced, which is what lets one box dry, cure, and store flower on a single program, with its water collection tray to empty and its sponge cup to keep wet. It is Cannatrol's own trademarked technology.
- Smart Climate Control (VIVOSUN) is the VCure's inverter-compressor system: it automatically cools, heats, dehumidifies and humidifies to hold the temperature and humidity each recipe stage calls for. It is a separate design and does not use Vaportrol.
How Does Each One Actually Cure?
Under the branding, both units chase the same target: they hold flower in a controlled climate that pulls moisture out slowly, then hold it steady for days without daily jar burping. Cannatrol gets there by locking a dew point and a dry-bulb temperature, with no RH setting at all; VIVOSUN gets there with an inverter compressor that holds a humidity target inside its 55 to 65 percent range (its default cure stage runs at 58 percent). Different engineering, same job.
The one thing worth clearing up, because the two names get mixed up constantly: the VCure does not use Vaportrol. Vaportrol is Cannatrol's trademark, and the VCure runs VIVOSUN's own system. If you want the science on why active climate control beats sealing flower in jars, our guide on how automated curing works breaks it down.
How Much Flower Can Each One Hold?
On a single wet batch they are close. The VCure takes about 2.5 pounds across seven shelves; the Cool Cure takes a similar load across six. Both double as storage after the cure. The VCure's Store stage runs continuously and VIVOSUN rates it for up to 5 pounds of dry buds; the Cool Cure's Store mode holds up to about 4.5 pounds of dried flower at a stable dew point.
Size runs the other way. Floor space is about the same (19.3 by 19.1 inches for the VCure, 17.75 by 20.75 inches for the Cool Cure C and C+), but the VCure is the taller, heavier box at 33.1 inches high and about 79 pounds, and it needs 5 inches of clearance on the top, sides and back, against 4 inches all round for the Cool Cure. The Cool Cure stands 28.25 inches high, weighs about 51 pounds and is stackable, so a bigger harvest can run in two units rather than one oversized one.
App Recipes or Set-and-Hold Dewpoint?
Both units can connect to a phone app over WiFi (on the base Cool Cure C it is an add-on), so this is a preference call about how you like to run a cure, not about which one is "smart."
The VCure leans into control. The VIVOSUN app ships with preset recipes plus a custom recipe builder, where you set the temperature, humidity and length of each stage, and it shows live temperature and humidity and lets you control the unit from anywhere. If you run several strains and want to tune a drier cultivar away from the default, that flexibility is the draw.
Without the app, the VCure still runs its preset recipes from the touchscreen; custom recipes have to be set up in the app first.
The Cool Cure leans into simplicity. You start it from the touchscreen on the door and it runs a 4-day dry at a 52°F dew point, a 4-day cure at 54°F, then holds in Store until you start a new cycle.
Cannatrol calls it fully programmable (every stage's temperature, dew point and length can be changed, and a SLOPE setting eases the conditions from dry to cure), but it recommends starting on the factory settings and judging the results before changing anything. For growers who already cure by feel and just want a chamber that never drifts, that is the appeal.
Which Cool Cure Trim Should You Get?
If you land on the Cannatrol, the Cool Cure comes in three trims with the same published curing specs. The C, C+, and C2 all use the same Vaportrol system, the same 2.5-pound wet batch, the same 4.5-pound storage and the same factory dry, cure and store program. The differences are finish, WiFi and depth: the C is matte black with the app module as an optional add-on, the C+ is that same matte unit with WiFi built in, and the C2 is the stainless model shown in the comparison above, with WiFi standard and a door handle that adds 2 inches of depth (22.75 inches against 20.75). The Cool Cure C vs C+ vs C2 breakdown walks through which trim fits which grow.
What Does It Cost to Buy and Run?
On purchase price, the VCure is the more accessible option and sits as a single unit. The Cool Cure line starts above it and climbs across the three trims, with the stainless C2 at the top. If entry price is the deciding factor, the VCure wins that column outright.
Running cost is a smaller number than most buyers expect. Cannatrol publishes its draw in the Cool Cure manual: about 30 watts on Store and up to 75 watts during a dry and cure. VIVOSUN does not publish a wattage for the VCure, and its setup guide asks for a dedicated outlet, so plan the spot before it arrives. The Cool Cure is a small load next to the lights in a grow room; with no published figure for the VCure, there is no running-cost number to compare, so I would not let it drive the decision. Buy on capacity, control style, and up-front price instead.
What Do Owners Actually Say?
I went digging through owner reviews and grower-forum threads for both units, because a spec sheet never tells you how a machine behaves after ten harvests. What stood out: Cannatrol owners write unusually specific reviews, down to cure times and settings.
On the Cannatrol side, the praise is unusually concrete, and one number keeps coming up: eight days. One owner on a grower forum summed up the whole appeal: "Being able to just load it up after harvest, hit a button and end up with perfectly dried and cured buds in 8 days is just mind blowing." A Trustpilot reviewer named the trade-off: it "drys as advertised," though it "does take longer for the chlorophyll smell to go away." That hands-off, roughly week-long cure is the thing Cool Cure owners rave about most.
The Cannatrol has two trade-offs worth knowing before you buy. A few owners hit monitor or calibration glitches: one Trustpilot reviewer loved the results but admitted, "I keep having issues with the monitor," which would not move past its calibration prompt. Another owner reviewing on Cannatrol's site cleared a sensor glitch by unplugging the unit and plugging it back in, and the C, C+ and C2 all carry a two-year parts-and-labor warranty.
And the price draws skeptics: one grower in r/farmingthebestgreens wrote, "The more I see of these devices, the more it just looks like a rebranded cigar humidor with metal shelves." Support, though, gets singled out as a strength again and again; an owner whose unit was out of warranty wrote that the company "worked with me to troubleshoot my unit and send me the circuit board and plug I needed for free."
On the VCure side, the recurring note in owner threads is humidity that surprises new owners: it can sit high on a tightly packed load, or drift low in a dry room or with a single small plant, which dries a run faster than some owners want. VIVOSUN's own guide covers both: spread buds evenly across the trays without stacking and stay within its 2.5 lb wet maximum, and add water to the tray when the environment runs too dry. A custom recipe also lets you raise the humidity or lengthen any stage.
The growers who run both are the most useful read. One owner of both units in r/farmingthebestgreens splits the work: the VCure runs the first dry and cure, and the Cannatrol handles storage and daily use because it is "great for recovering to temp quickly." On the finished cure itself, the owner feedback I read does not crown a winner.
Which Should You Choose?
Neither unit is a wrong buy; they suit different priorities. If I want a library of preset and custom recipes at the lowest entry price in a single box, the VCure earns it, and it is a real upgrade over jar burping either way, as our VCure vs. mason jar curing breakdown lays out. If I am optimizing for a dew-point cure that works well on its factory settings, in a lighter box that stacks, and I am willing to pay more for it, I would take the Cool Cure, in the C2 trim if the stainless finish matters to me.
Both belong to a fast-growing field of automated curing systems that now spans several makers, so it is worth knowing where each one lands before you commit. If long-term holding is your real goal, both units store after the cure, and the broader range of storage and curing gear covers jars and totes for the overflow. For the full teardown on the VIVOSUN unit specifically, see our VIVOSUN VCure review.
Frequently Asked Questions
- What is the difference between the VCure and the Cannatrol Cool Cure?
- Both automate drying and curing with active vapor-pressure control and both can connect to a phone app over WiFi (built in on the VCure, the C+ and the C2; an optional upgrade on the base C). The VCure is a single, lower-priced unit with an app-driven recipe engine and seven stainless steel shelves. The Cool Cure is a three-model line with dewpoint-based Vaportrol control, a Store mode holding up to about 4.5 lb, and a stackable design.
- Does the VCure have WiFi?
- Yes. The VCure has built-in WiFi and works with the VIVOSUN app for remote monitoring, starting and stopping runs, and saving custom recipes. Without WiFi it still runs the preset recipes from its touchscreen; custom recipes need the app. WiFi is not a Cannatrol-only feature: both can be app-connected.
- Does the VCure use Cannatrol's Vaportrol technology?
- No. Vaportrol is Cannatrol's own trademarked dewpoint technology, used only in Cannatrol's own systems. The VIVOSUN VCure uses a separate system it calls Smart Climate Control, driven by an inverter compressor. The two are often confused, but they are different designs from different companies.
- Is the Cannatrol Cool Cure better than the VCure?
- Neither is universally better. The Cool Cure leads on a dewpoint cure that runs well on factory settings and on a lighter box that stacks. The VCure leads on entry price and its library of preset and shareable custom recipes. Match the unit to your batch size and how much hands-on control you want.
- Which one holds more flower?
- They hold a similar wet batch, around 2.5 lb each. Both also store the finished flower: VIVOSUN rates the VCure for up to 5 lb of dry buds, and Cannatrol rates the Cool Cure for up to about 4.5 lb.
- How much does it cost to run one of these?
- Cannatrol's manual puts the Cool Cure at about 30 watts on Store and up to 75 watts during a dry and cure, and its FAQ gives a 120-watt maximum with a 30-watt average. VIVOSUN does not publish the VCure's wattage, and it wants a dedicated outlet, so there is no like-for-like running-cost figure.
- What is the difference between the Cool Cure C, C+, and C2?
- All three use the same Vaportrol system, the same 2.5 lb wet capacity and the same 4.5 lb dry storage capacity. The C is the entry model with WiFi as an optional add-on, the C+ is the same matte unit with WiFi already included, and the C2 is the stainless-finish model with WiFi included. Beyond finish and WiFi, the C2's door handle adds 2 inches of depth (22.75 inches against 20.75 for the C and C+).
