Anova Precision Cooker Nano 3.0 vs KitchenBoss Sous Vide Cooker G321
Both made our Best Sous Vide Machines Under $150 shortlist, at #1 and #2. Here's how they differ and who each one suits.
- BuyOnceRight Research Desk
- Updated
- 4 min read
Quick verdict
Choose the Anova Precision Cooker Nano 3.0, 800W if you want the Anova app includes step-by-step recipe guides that walk beginners through time and temperature for common proteins. Choose the KitchenBoss Sous Vide Cooker G321, 1100W if you'd rather have 1100W recovery power at a price low enough to justify buying a second unit for dual-circulator setups. Overall we rank the Anova Precision Cooker Nano 3.0, 800W higher: #1 versus #2 in our Best Sous Vide Machines Under $150 list.
Winner overall: Anova Precision Cooker Nano 3.0, 800W
Anova Precision Cooker Nano 3.0, 800W vs KitchenBoss Sous Vide Cooker G321, 1100W compared
Every difference that matters, in one table.
| Attribute | ||
|---|---|---|
| Our ranking | #1 of 3 in Best Sous Vide Machines Under $150 | #2 of 3 in Best Sous Vide Machines Under $150 |
| Pick label | ||
| Brand | Anova Culinary | KitchenBoss |
| Key features | 800W heating element; Anova app with built-in recipe guides; 8L/min flow rate | 1100W brushless DC motor; Adjustable clamp for large stockpots; Built-in TFT display with recipe presets |
| Biggest strength | The Anova app includes step-by-step recipe guides that walk beginners through time and temperature for common proteins | 1100W recovery power at a price low enough to justify buying a second unit for dual-circulator setups |
| Main trade-off | Relies more heavily on the app than the Instant Pot's onboard screen | Smaller brand with less long-term large-batch reliability data than Anova |
| Best for | beginners and first-time buyers | large batch cooking |
Which should you buy?

#1 pick
Choose the Anova Precision Cooker Nano 3.0, 800W if…
- The Anova app includes step-by-step recipe guides that walk beginners through time and temperature for common proteins
- Compact size is less intimidating on the counter than a full-size circulator
- Same accuracy as Anova's flagship model, so results are consistent while you're learning
Best for: beginners and first-time buyers
Prefer the alternative? See the KitchenBoss Sous Vide Cooker G321, 1100W section.

#2 pick
Choose the KitchenBoss Sous Vide Cooker G321, 1100W if…
- 1100W recovery power at a price low enough to justify buying a second unit for dual-circulator setups
- Built-in display works independently, useful when running two units without needing two app connections
- Quiet motor is a real benefit over multi-hour large-batch cooks
Best for: large batch cooking
Prefer the alternative? See the Anova Precision Cooker Nano 3.0, 800W section.
Pros and cons of each
Anova Precision Cooker Nano 3.0, 800W
Pros
- The Anova app includes step-by-step recipe guides that walk beginners through time and temperature for common proteins
- Compact size is less intimidating on the counter than a full-size circulator
- Same accuracy as Anova's flagship model, so results are consistent while you're learning
Cons
- Relies more heavily on the app than the Instant Pot's onboard screen
- No onboard display for at-a-glance monitoring
- 800W recovery is slower than 1100W units for larger first attempts
KitchenBoss Sous Vide Cooker G321, 1100W
Pros
- 1100W recovery power at a price low enough to justify buying a second unit for dual-circulator setups
- Built-in display works independently, useful when running two units without needing two app connections
- Quiet motor is a real benefit over multi-hour large-batch cooks
Cons
- Smaller brand with less long-term large-batch reliability data than Anova
- No app for coordinating settings between two units remotely
- Fewer total ratings than the established market leaders
Anova Precision Cooker Nano 3.0, 800W vs KitchenBoss Sous Vide Cooker G321, 1100W: common questions
Which is better, the Anova Precision Cooker Nano 3.0, 800W or the KitchenBoss Sous Vide Cooker G321, 1100W?
Choose the Anova Precision Cooker Nano 3.0, 800W if you want the Anova app includes step-by-step recipe guides that walk beginners through time and temperature for common proteins. Choose the KitchenBoss Sous Vide Cooker G321, 1100W if you'd rather have 1100W recovery power at a price low enough to justify buying a second unit for dual-circulator setups. Overall we rank the Anova Precision Cooker Nano 3.0, 800W higher: #1 versus #2 in our Best Sous Vide Machines Under $150 list.
What is the difference between the Anova Precision Cooker Nano 3.0, 800W and the KitchenBoss Sous Vide Cooker G321, 1100W?
The Anova Precision Cooker Nano 3.0, 800W stands out because the Anova app includes step-by-step recipe guides that walk beginners through time and temperature for common proteins, while the KitchenBoss Sous Vide Cooker G321, 1100W stands out because 1100W recovery power at a price low enough to justify buying a second unit for dual-circulator setups. The trade-offs differ too: the Anova Precision Cooker Nano 3.0, 800W's main caveat is that relies more heavily on the app than the Instant Pot's onboard screen, and the KitchenBoss Sous Vide Cooker G321, 1100W's is that smaller brand with less long-term large-batch reliability data than Anova.
Is the Anova Precision Cooker Nano 3.0, 800W worth it over the KitchenBoss Sous Vide Cooker G321, 1100W?
For most buyers, yes: it's our #1 pick. Consider the KitchenBoss Sous Vide Cooker G321, 1100W instead if relies more heavily on the app than the Instant Pot's onboard screen is a deal-breaker for you.
Who should buy the KitchenBoss Sous Vide Cooker G321, 1100W instead of the Anova Precision Cooker Nano 3.0, 800W?
The KitchenBoss Sous Vide Cooker G321, 1100W suits large batch cooking, while the Anova Precision Cooker Nano 3.0, 800W is best for beginners and first-time buyers.