These two devices share identical hardware — same battery, same coil, same puff count. The only difference is what they let you adjust. MySour gives you 4 levels of sourness. MyCool gives you 5 levels of cooling. Same platform, completely different vaping experiences. Here's how to decide.
Shared Platform, Different Purpose
Before comparing what's different, it's worth noting what's identical. MySour and MyCool run on the exact same hardware:
| Shared Spec | Value |
|---|---|
| Puff count | Up to 40,000 (Turbo I) |
| E-liquid | 20 mL pre-filled, 5% salt nic |
| Battery | 850 mAh USB-C rechargeable |
| Coil | Triple mesh |
| Body | C-frame, 102 × 27 × 9 mm |
| Turbo modes | 3 levels (I / II / III) |
| Adjustable airflow | ✅ Yes |
| VOS Price | $21.99 each |
Same price, same battery, same coil, same body. The only variables are the adjustment system, the flavor lineup, and how the juice is formulated to respond to each system.
The Adjustment Systems Compared
Level 1: Light citric tang on exhale
Level 2: Balanced sour — noticeable on inhale and exhale
Level 3: Full pucker — dominant sour sensation
The sourness feels natural, not artificial. It's closer to biting into a sour candy than adding citric acid.
Cool: Balanced cooling, sweet spot for most
Chill: Noticeable menthol on inhale
Frost: Menthol-dominant experience
Arctic Freeze: Maximum ice, flavor becomes backdrop
MyCool gets an extra level (5 vs 4), giving slightly more granularity in the cooling range.
Flavor Lineups — Quality vs Quantity
This is where the biggest practical difference lies. MyCool has 15 flavors across multiple categories. MySour has 5 flavors, all purpose-built for the sourness system. Fewer options, but each one is formulated specifically to work with sour scaling. For full tasting notes, see the complete Adjust flavor directory.
| MySour 40K — 5 Flavors | |
|---|---|
| Sour Blue Razz Ice | Blue raspberry + menthol + sour |
| Sour Grapple | Green apple meets sweet grape |
| Sour Island | Tropical citrus explosion |
| Sour Peach Raspberry | Juicy peach + vibrant raspberry |
| Sour Pinkberry | Mixed berries with sour punch |
| MyCool 40K — 15 Flavors (top 5 shown) | |
|---|---|
| Tigers Blood ⭐ | Watermelon + strawberry + coconut |
| Dragon Strawnana | Dragon fruit + strawberry + banana |
| Scary Berry | Dark berry fusion with icy bite |
| Cherry Strazz | Sour cherry + strawberry + raspberry |
| Sour Lush Gummy | Sour pineapple gummy bear |
| + 10 more flavors. See full MyCool ranking → | |
Side-by-Side Verdict
| Category | MySour | MyCool |
|---|---|---|
| Adjustment levels | 4 sourness | 5 coolness |
| Flavor count | 5 | 15 |
| Flavor uniqueness | ★★★★★ | ★★★☆☆ |
| Adjustment impact | Dramatic — Level 0 vs 3 is a completely different flavor | Noticeable — cooling changes sensation, not taste |
| Who it's for | Sour candy lovers, flavor adventurers | Menthol fans, variety seekers |
| Category innovation | First-ever adjustable sourness | First 5-level cooling system |
The Bottom Line
Choose MySour if you want the most dramatically different adjustment experience in the Adjust lineup. Cranking sourness from 0 to 3 fundamentally transforms each flavor — it's the closest any disposable comes to having multiple devices in one. The 5-flavor lineup is small but every option is excellent. For sour flavor details, see our MySour flavor deep dive.
Choose MyCool if menthol is part of your daily rotation and you want the widest flavor selection. 15 flavors across fruit, berry, tropical, sour, candy, and mint means you can use MyCool as your only device and never get bored. The cooling adjustment enhances the experience rather than transforming it. Read the full MyCool review for rankings of all 15 flavors.
What About MyRusher?
If you're considering Adjust but menthol and sourness aren't your priorities, the MyRusher 40K takes a different approach — it lets you adjust power and vapor intensity rather than flavor character. It also has the biggest battery (1,000 mAh) and fastest charging in the lineup. See the full Adjust Vape guide for a comparison of all five devices.
