Price (USD)
G Pen Roam edgeG Pen Roam
$200
Tempest
$247
G Pen Roam is typically around $47 lower.
Vaporizer Comparison
G Pen Roam vs Tempest
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science $200
VS
Tempest
Mad Heaters $247
Editorial Summary
G Pen Roam and Tempest are both portable vaporizers, but they target different priorities. G Pen Roam is usually the lower-cost pick at $200, around $47 below Tempest. Session style, airflow, and extraction behavior will matter more than raw spec sheet numbers here.
Specs Compared
24
Different Specs
23
Shared Specs
1
Overall Overlap
4%
Shared Traits
Portable
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heating Style
Close callG Pen Roam
Conduction
Tempest
Convection-heavy with some conduction
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
$200
Tempest
$247
Heating Type
G Pen Roam
Conduction
Tempest
Convection-heavy with some conduction
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
Tempest
N/A
Battery Type
G Pen Roam
Internal
Tempest
None
Battery Capacity
G Pen Roam
1300mAh
Tempest
N/A
Battery Life
G Pen Roam
15-20 sessions
Tempest
N/A
Charging
G Pen Roam
Micro-USB
Tempest
N/A
Charge Time
G Pen Roam
~2 hours
Tempest
N/A
Power Adjustment
G Pen Roam
Digital Control
Tempest
Manual
Chamber Material
G Pen Roam
Quartz
Tempest
Titanium
Choose G Pen Roam if...
- You want the lower listed entry price ($200 vs $247).
- You prefer a conduction heating profile.
- Your usage leans toward electronic and concentrates sessions.
Choose Tempest if...
- You prefer a convection-heavy with some conduction heating profile.
- Your usage leans toward analog and premium sessions.
- You prefer Tempest's overall feature mix and form factor.
Spec Comparison Table
Direct comparison of every spec from each device profile.
23 differ 1 shared
| Specification | G Pen Roam | Tempest |
|---|---|---|
| Price (USD) | $200 | $247 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Convection-heavy with some conduction |
| Heat Up Time | ~5 seconds | — |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | N/A |
| Chamber Capacity | — | 0.075g - 0.15g |
| Battery Type | Internal | None |
| Battery Capacity | 1300mAh | N/A |
| Battery Life | 15-20 sessions | N/A |
| Charging | Micro-USB | N/A |
| Charge Time | ~2 hours | N/A |
| Dimensions | 178x127x102mm | — |
| Weight | ~317g | — |
| Power Adjustment | Digital Control | Manual |
| Chamber Material | Quartz | Titanium |
| Concentrate Support | Yes | — |
| Brand | Grenco Science | Mad Heaters |
| Adjustable Airflow | No | Yes |
| Ball Size | — | 2.5mm Zirconia |
| Country of Manufacture | — | Made in China, Assembled in the UK |
| Display Type | LED | — |
| Haptic Feedback | Yes | — |
| Release Date | 2020 | — |
| Warranty | 1 year | — |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the Tempest?
The biggest practical difference is heating approach: G Pen Roam runs conduction while Tempest runs convection-heavy with some conduction. That changes flavor delivery, vapor density, and how the device responds to slow versus fast draws.
Which is cheaper, the G Pen Roam or the Tempest?
G Pen Roam is the cheaper option at $200 compared with $247 for the Tempest, about $47 less. Live retailer pricing can shift, so confirm before buying.
What's the difference in heating between the G Pen Roam and the Tempest?
G Pen Roam uses conduction heating, while the Tempest uses convection-heavy with some conduction. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Can I set custom temperatures on the G Pen Roam or the Tempest?
G Pen Roam controls heat with digital control, while the Tempest uses manual. G Pen Roam gives you finer per-degree control.
What battery life can I expect from the G Pen Roam and the Tempest?
G Pen Roam's spec sheet lists 15-20 sessions; the Tempest lists N/A. The two manufacturers measure battery life differently here, so direct comparison isn't straightforward.
Need a different matchup?
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