Price (USD)
G Pen Roam edgeG Pen Roam
$100
IO Hornet
$260
G Pen Roam is typically around $160 lower.
Vaporizer Comparison
G Pen Roam vs IO Hornet
Side-by-side specs, pricing context, and clear decision guidance.
G Pen Roam
Grenco Science from $49.95
VS
IO Hornet
IO MFG $260
Editorial Summary
G Pen Roam and IO Hornet are both electronic vaporizers, but they target different priorities. G Pen Roam is usually the lower-cost pick at $100, around $160 below IO Hornet. G Pen Roam has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
27
Different Specs
27
Shared Specs
0
Overall Overlap
0%
Shared Traits
Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
G Pen Roam edgeG Pen Roam
~5 seconds
IO Hornet
3-5 minutes on a 16mm coil, longer on 20mm and 25mm adapters
G Pen Roam has the quicker listed heat-up profile.
Heating Style
Close callG Pen Roam
Conduction
IO Hornet
Convection as an injector, hybrid with conduction as a diffuser
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
IO Hornet
$260
Device Type
G Pen Roam
Portable
IO Hornet
Desktop
Heating Type
G Pen Roam
Conduction
IO Hornet
Convection as an injector, hybrid with conduction as a diffuser
Heat Up Time
G Pen Roam
~5 seconds
IO Hornet
3-5 minutes on a 16mm coil, longer on 20mm and 25mm adapters
Temperature Range
G Pen Roam
204°C - 427°C (400°F - 800°F)
IO Hornet
271-338°C (520-640°F) recommended by IO MFG
Battery Type
G Pen Roam
Internal
IO Hornet
None
Charging
G Pen Roam
Micro-USB
IO Hornet
None
Power Adjustment
G Pen Roam
Digital Control
IO Hornet
Set on a separate PID controller, included only in the Complete Kit
Chamber Material
G Pen Roam
Quartz
IO Hornet
316L stainless steel with a Bocote wood handle
Concentrate Support
G Pen Roam
Yes
IO Hornet
Suited to traditional hash, not built for wax or oil
Choose G Pen Roam if...
- You want the lower listed entry price ($100 vs $260).
- You care about faster heat-up time for quicker sessions.
- You prefer a conduction heating profile.
- Your usage leans toward portable and concentrates sessions.
Lowest price
$49.95
at G Pen
Choose IO Hornet if...
- You prefer a convection as an injector, hybrid with conduction as a diffuser heating profile.
- Your usage leans toward desktop and ball vape sessions.
- You prefer IO Hornet's overall feature mix and form factor.
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.
27 differ 0 shared
| Specification | G Pen Roam | IO Hornet |
|---|---|---|
| Price (USD) | $100 | $260 |
| Device Type | Portable | Desktop |
| Heating Type | Conduction | Convection as an injector, hybrid with conduction as a diffuser |
| Heat Up Time | ~5 seconds | 3-5 minutes on a 16mm coil, longer on 20mm and 25mm adapters |
| Temperature Range | 204°C - 427°C (400°F - 800°F) | 271-338°C (520-640°F) recommended by IO MFG |
| Chamber Capacity | — | 0.08g to about 0.2g, around 0.15g for a full draw |
| Battery Type | Internal | None |
| Battery Capacity | 1300mAh | — |
| Battery Life | 15-20 sessions | — |
| Charging | Micro-USB | None |
| Charge Time | ~2 hours | — |
| Weight | ~317g | — |
| Power Adjustment | Digital Control | Set on a separate PID controller, included only in the Complete Kit |
| Chamber Material | Quartz | 316L stainless steel with a Bocote wood handle |
| Concentrate Support | Yes | Suited to traditional hash, not built for wax or oil |
| Brand | Grenco Science | IO MFG |
| Adjustable Airflow | No | — |
| Ball Type | — | 100 x 2.5mm lab grown ruby balls |
| Bowl Compatibility | — | Classic DynaVap tips, IO conduction and glass bowls, many third party 14mm bowls |
| Coil Size | — | 16mm, with adapters for 20mm and 25mm coils |
| Display Type | LED | — |
| Haptic Feedback | Yes | — |
| Joint Size | — | 14mm bowls included, 10mm and 14mm diffusers, 14mm and 22mm injectors |
| Manufacturer | — | IO MFG LLC |
| Release Date | 2020 | 2024 |
| Session Style | — | On-Demand |
| Warranty | 1 year | None, IO MFG sells the Hornet as is with no express or implied warranty |
Comparison FAQs
What is the biggest difference between the G Pen Roam and the IO Hornet?
The biggest practical difference is price tier: the G Pen Roam sits at $100 while the IO Hornet is $260, a gap of about $160 that puts them in different buying brackets.
Which is cheaper, the G Pen Roam or the IO Hornet?
G Pen Roam is the cheaper option at $100 compared with $260 for the IO Hornet, about $160 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the G Pen Roam or the IO Hornet?
G Pen Roam reaches session-ready temperature in ~5 seconds, while the IO Hornet takes 3-5 minutes on a 16mm coil, longer on 20mm and 25mm adapters. That's roughly 235 seconds quicker on the G Pen Roam, which is useful if you want shorter, on-demand sessions.
What's the difference in heating between the G Pen Roam and the IO Hornet?
G Pen Roam uses conduction heating, while the IO Hornet uses convection as an injector, hybrid with conduction as a diffuser. Heating style influences flavor profile, vapor density, and how forgiving the device is to draw technique.
Is the G Pen Roam or the IO Hornet better for home versus on-the-go use?
G Pen Roam is the take-anywhere choice. It's a portable, battery-powered unit, while the IO Hornet is built for home use, where bigger heaters, AC power, and larger chambers make sense.
Can I set custom temperatures on the G Pen Roam or the IO Hornet?
G Pen Roam controls heat with digital control, while the IO Hornet uses set on a separate pid controller, included only in the complete kit. G Pen Roam gives you finer per-degree control.
Which has a wider temperature range, the G Pen Roam or the IO Hornet?
G Pen Roam covers 204°C - 427°C (400°F - 800°F), a wider band than the IO Hornet at 271-338°C (520-640°F) recommended by IO MFG. A wider range gives you more room to dial in flavor at the low end and big clouds at the top.
Need a different matchup?
Jump into the comparison hub to pick any two devices and open a canonical side-by-side page.