Price (USD)
XMAX Starry 4 edgeHydrology9
$199
XMAX Starry 4
$99
XMAX Starry 4 is typically around $100 lower.
Vaporizer Comparison
Hydrology9 vs XMAX Starry 4
Side-by-side specs, pricing context, and clear decision guidance.
Hydrology9
Cloudious9 $199
VS
XMAX Starry 4
XMAX $99
Editorial Summary
Hydrology9 and XMAX Starry 4 are both conduction / electronic vaporizers, but they target different priorities. XMAX Starry 4 is usually the lower-cost pick at $99, around $100 below Hydrology9. XMAX Starry 4 has the quicker listed heat-up profile, which can matter for shorter sessions.
Specs Compared
27
Different Specs
23
Shared Specs
4
Overall Overlap
15%
Shared Traits
Conduction Electronic
Head-to-Head Highlights
A quick snapshot of the specs people usually care about first.
Heat-Up Time
XMAX Starry 4 edgeHydrology9
~1 minute
XMAX Starry 4
~15 seconds
XMAX Starry 4 has the quicker listed heat-up profile.
Heating Style
Close callHydrology9
Conduction
XMAX Starry 4
Conduction
Both devices use a similar heating approach.
Key Differences at a Glance
Top specs where these two devices diverge.
Price (USD)
Hydrology9
$199
XMAX Starry 4
$99
Heat Up Time
Hydrology9
~1 minute
XMAX Starry 4
~15 seconds
Temperature Range
Hydrology9
250°F-430°F
XMAX Starry 4
100℃-240℃ (212℉-464℉)
Chamber Capacity
Hydrology9
~0.5 grams
XMAX Starry 4
0.4g
Battery Type
Hydrology9
Internal
XMAX Starry 4
18650
Battery Capacity
Hydrology9
2000mAh
XMAX Starry 4
2550mAh
Charging
Hydrology9
Micro USB
XMAX Starry 4
USB-C
Charge Time
Hydrology9
~2 hours
XMAX Starry 4
~90 minutes
Dimensions
Hydrology9
~4.5 x ~17.5cm
XMAX Starry 4
115.9 x 37.5 x 24mm
Power Adjustment
Hydrology9
Modular - 5 stage
XMAX Starry 4
Digital (precise)
Choose Hydrology9 if...
- Your usage leans toward desktop sessions.
- You prefer Hydrology9's overall feature mix and form factor.
- You value how the Hydrology9 balances size, controls, and everyday practicality.
Choose XMAX Starry 4 if...
- You want the lower listed entry price ($99 vs $199).
- You care about faster heat-up time for quicker sessions.
- Your usage leans toward portable and budget sessions.
Spec Comparison Table
Direct comparison of every spec from each device profile.
23 differ 4 shared
| Specification | Hydrology9 | XMAX Starry 4 |
|---|---|---|
| Price (USD) | $199 | $99 |
| Device Type | Portable | Portable |
| Heating Type | Conduction | Conduction |
| Heat Up Time | ~1 minute | ~15 seconds |
| Temperature Range | 250°F-430°F | 100℃-240℃ (212℉-464℉) |
| Chamber Capacity | ~0.5 grams | 0.4g |
| Battery Type | Internal | 18650 |
| Battery Capacity | 2000mAh | 2550mAh |
| Battery Life | — | ~60 minutes |
| Charging | Micro USB | USB-C |
| Charge Time | ~2 hours | ~90 minutes |
| Pass-Through Charging | — | Yes |
| Dimensions | ~4.5 x ~17.5cm | 115.9 x 37.5 x 24mm |
| Weight | — | ~137g |
| Power Adjustment | Modular - 5 stage | Digital (precise) |
| Chamber Material | Ceramic | Ceramic |
| Brand | Cloudious9 | XMAX |
| Adjustable Airflow | — | Yes |
| Country of Manufacture | — | China |
| Display Type | — | OLED |
| Haptic Feedback | — | Yes |
| Manufacturer | — | TopGreen Technology Co |
| Release Date | 2017 | 2023 |
| Replaceable Battery | — | Yes |
| Session Style | Session | Session |
| Warranty | 2 years | 1 year |
| Water Filtration | Yes | — |
Comparison FAQs
What is the biggest difference between the Hydrology9 and the XMAX Starry 4?
The biggest practical difference is price tier: the XMAX Starry 4 sits at $99 while the Hydrology9 is $199, a gap of about $100 that puts them in different buying brackets.
Which is cheaper, the Hydrology9 or the XMAX Starry 4?
XMAX Starry 4 is the cheaper option at $99 compared with $199 for the Hydrology9, about $100 less. Live retailer pricing can shift, so confirm before buying.
Which heats up faster, the Hydrology9 or the XMAX Starry 4?
XMAX Starry 4 reaches session-ready temperature in ~15 seconds, while the Hydrology9 takes ~1 minute. That's roughly 45 seconds quicker on the XMAX Starry 4, which is useful if you want shorter, on-demand sessions.
Does the Hydrology9 or the XMAX Starry 4 hold more flower?
Hydrology9 has the larger chamber at ~0.5 grams, versus 0.4g on the XMAX Starry 4. A bigger bowl means fewer reloads on long sessions; a smaller one suits microdosing and quicker bowls.
Can I swap the batteries on the Hydrology9 or the XMAX Starry 4?
XMAX Starry 4 uses 18650, so you can carry spares for back-to-back days. The Hydrology9 has a built-in battery you can't swap on the go.
Can I set custom temperatures on the Hydrology9 or the XMAX Starry 4?
Hydrology9 controls heat with modular - 5 stage, while the XMAX Starry 4 uses digital (precise). XMAX Starry 4 gives you finer per-degree control.
Which charges faster, the Hydrology9 or the XMAX Starry 4?
XMAX Starry 4 fully charges in ~90 minutes, ahead of ~2 hours on the Hydrology9.
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