Price (USD)
Close callG Pen Roam
$100
ViVANT Alternate
$110
Pricing is very close between both devices.
Vaporizer Comparison
G Pen Roam vs ViVANT Alternate
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
ViVANT Alternate
ViVANT $110
Editorial Summary
G Pen Roam and ViVANT Alternate are both portable / electronic vaporizers, but they target different priorities. Their listed prices are close ($100 vs $110). Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
24
Different Specs
22
Shared Specs
2
Overall Overlap
8%
Shared Traits
Portable Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Weight
ViVANT Alternate edgeG Pen Roam
~317g
ViVANT Alternate
235g
ViVANT Alternate is the lighter listed unit.
Heating Style
Close callG Pen Roam
Conduction
ViVANT Alternate
Convection
Heating style differs, which can impact flavor and extraction behavior.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
G Pen Roam
$100
ViVANT Alternate
$110
Heating Type
G Pen Roam
Conduction
ViVANT Alternate
Convection
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
ViVANT Alternate
158°F - 428°F
Battery Type
G Pen Roam
Internal
ViVANT Alternate
18650
Battery Capacity
G Pen Roam
1300mAh
ViVANT Alternate
2100mAh
Battery Life
G Pen Roam
15-20 sessions
ViVANT Alternate
~45 minutes
Charge Time
G Pen Roam
~2 hours
ViVANT Alternate
1-2 hours
Weight
G Pen Roam
~317g
ViVANT Alternate
235g
Power Adjustment
G Pen Roam
Digital Control
ViVANT Alternate
Digital (precise)
Chamber Material
G Pen Roam
Quartz
ViVANT Alternate
Aluminum
Choose G Pen Roam if...
- You prefer a conduction heating profile.
- Your usage leans toward concentrates sessions.
- You prefer G Pen Roam's overall feature mix and form factor.
Lowest price
$49.95
at G Pen
Choose ViVANT Alternate if...
- You want the lighter unit for carrying and travel.
- You prefer a convection heating profile.
- Your usage leans toward convection and battery swap sessions.
Prices are read automatically from retailer pages and were last checked Aug 27, 2026; confirm the price at checkout. Some links are affiliate links, which support Thermal Extractions at no extra cost to you.
Spec Comparison Table
Direct comparison of every spec from each device profile.
22 differ 2 shared
| Specification | G Pen Roam | ViVANT Alternate |
|---|---|---|
| Price (USD) | $100 | $110 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Convection |
| Heat Up Time | ~5 seconds | — |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 158°F - 428°F |
| Chamber Capacity | — | 0.1g - 0.2g |
| Battery Type | Internal | 18650 |
| Battery Capacity | 1300mAh | 2100mAh |
| Battery Life | 15-20 sessions | ~45 minutes |
| Charging | Micro-USB | Micro USB |
| Charge Time | ~2 hours | 1-2 hours |
| Dimensions | — | 108x52x32mm |
| Weight | ~317g | 235g |
| Power Adjustment | Digital Control | Digital (precise) |
| Chamber Material | Quartz | Aluminum |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | ViVANT |
| Adjustable Airflow | No | Yes |
| Display Type | LED | OLED |
| Haptic Feedback | Yes | — |
| Release Date | 2020 | — |
| Replaceable Battery | — | Yes |
| Session Style | — | Session |
| Warranty | 1 year | 90 days |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the ViVANT Alternate?
The biggest practical difference is heating approach: G Pen Roam runs conduction while ViVANT Alternate runs convection. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
What's the difference in heating between the G Pen Roam and the ViVANT Alternate?
G Pen Roam uses conduction heating, while the ViVANT Alternate uses convection. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Which is lighter, the G Pen Roam or the ViVANT Alternate?
ViVANT Alternate is the lighter unit at 235g, around 82g less than the G Pen Roam at ~317g. The lighter device is easier to carry and pocket day-to-day.
Which is cheaper, the G Pen Roam or the ViVANT Alternate?
Listed prices are close: $100 for the G Pen Roam versus $110 for the ViVANT Alternate. Day-to-day price will likely come down to whichever retailer is running a promotion.
Can I swap the batteries on the G Pen Roam or the ViVANT Alternate?
ViVANT Alternate uses 18650, so you can carry spares for back-to-back days. The G Pen Roam has a built-in battery you can't swap on the go.
Which charges faster, the G Pen Roam or the ViVANT Alternate?
ViVANT Alternate fully charges in 1-2 hours, ahead of ~2 hours on the G Pen Roam.
What battery life can I expect from the G Pen Roam and the ViVANT Alternate?
G Pen Roam's spec sheet lists 15-20 sessions; the ViVANT Alternate lists ~45 minutes. The two manufacturers measure battery life differently here, so direct comparison isn't straightforward.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.