Price (USD)
G Pen Pro edgeG Pen Pro
$90
ViVANT Alternate
$110
G Pen Pro is typically around $20 lower.
Vaporizer Comparison
G Pen Pro vs ViVANT Alternate
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Pro
Grenco Science $90
VS
ViVANT Alternate
ViVANT $110
Editorial Summary
G Pen Pro and ViVANT Alternate are both portable / convection vaporizers, but they target different priorities. G Pen Pro is usually the lower-cost pick at $90, around $20 below ViVANT Alternate. Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
22
Different Specs
18
Shared Specs
4
Overall Overlap
18%
Shared Traits
Portable Convection Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heating Style
Close callG Pen Pro
Convection
ViVANT Alternate
Convection
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
G Pen Pro
$90
ViVANT Alternate
$110
Temperature Range
G Pen Pro
190°C - 220°C (375°F - 428°F)
ViVANT Alternate
158°F - 428°F
Chamber Capacity
G Pen Pro
~0.25 grams
ViVANT Alternate
0.1g - 0.2g
Battery Type
G Pen Pro
Internal
ViVANT Alternate
18650
Battery Capacity
G Pen Pro
2200mAh
ViVANT Alternate
2100mAh
Charge Time
G Pen Pro
<3 hours
ViVANT Alternate
1-2 hours
Power Adjustment
G Pen Pro
Modular - 3 Stages
ViVANT Alternate
Digital (precise)
Chamber Material
G Pen Pro
Ceramic
ViVANT Alternate
Aluminum
Brand
G Pen Pro
Grenco Science
ViVANT Alternate
ViVANT
Warranty
G Pen Pro
1 year
ViVANT Alternate
90 days
Choose G Pen Pro if...
- Your usage leans toward budget sessions.
- You prefer G Pen Pro's overall feature mix and form factor.
- You value how the G Pen Pro balances size, controls, and everyday practicality.
Choose ViVANT Alternate if...
- Your usage leans toward battery swap sessions.
- You prefer ViVANT Alternate's overall feature mix and form factor.
- You value how the ViVANT Alternate balances size, controls, and everyday practicality.
Spec Comparison Table
Direct comparison of every spec from each device profile.
18 differ 4 shared
| Specification | G Pen Pro | ViVANT Alternate |
|---|---|---|
| Price (USD) | $90 | $110 |
| Device Type | Portable | Portable |
| Heating Type | Convection | Convection |
| Heat Up Time | ~30 seconds | — |
| Temperature Range | 190°C - 220°C (375°F - 428°F) | 158°F - 428°F |
| Chamber Capacity | ~0.25 grams | 0.1g - 0.2g |
| Battery Type | Internal | 18650 |
| Battery Capacity | 2200mAh | 2100mAh |
| Battery Life | — | ~45 minutes |
| Charging | Micro-USB | Micro USB |
| Charge Time | <3 hours | 1-2 hours |
| Dimensions | — | 108x52x32mm |
| Weight | — | 235g |
| Power Adjustment | Modular - 3 Stages | Digital (precise) |
| Chamber Material | Ceramic | Aluminum |
| Brand | Grenco Science | ViVANT |
| Adjustable Airflow | — | Yes |
| Display Type | — | OLED |
| Release Date | 2017 | — |
| Replaceable Battery | — | Yes |
| Session Style | Session | Session |
| Warranty | 1 year | 90 days |
Comparison FAQs
What is the biggest difference between the G Pen Pro and the ViVANT Alternate?
There's no single headline gap. The differences are spread across 18 smaller spec rows rather than concentrated in one place. The spec table below marks each row that differs.
Which is cheaper, the G Pen Pro or the ViVANT Alternate?
G Pen Pro is the cheaper option at $90 compared with $110 for the ViVANT Alternate, about $20 less. Live retailer pricing can shift, so confirm before buying.
Does the G Pen Pro or the ViVANT Alternate hold more flower?
G Pen Pro has the larger chamber at ~0.25 grams, versus 0.1g - 0.2g on the ViVANT Alternate. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Can I swap the batteries on the G Pen Pro or the ViVANT Alternate?
ViVANT Alternate uses 18650, so you can carry spares for back-to-back days. The G Pen Pro has a built-in battery you can't swap on the go.
Can I set custom temperatures on the G Pen Pro or the ViVANT Alternate?
G Pen Pro controls heat with modular - 3 stages, while the ViVANT Alternate uses digital (precise). ViVANT Alternate gives you finer per-degree control.
Which charges faster, the G Pen Pro or the ViVANT Alternate?
ViVANT Alternate fully charges in 1-2 hours, ahead of <3 hours on the G Pen Pro.
How similar are the G Pen Pro and the ViVANT Alternate?
Across the 22 specs we line up, they share 4 and differ on 18, an overlap of about 18%. The differences are concentrated in the areas the spec table highlights with a marker.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.