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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-24 · 6 min read · Independent comparison
• DIITGGE 4.2L — biggest strength: a fully 360° viewable borosilicate glass pot plus a dedicated sweet potato preset, so you can watch browning without opening the drawer and losing heat.
• DIITGGE 4.2L — biggest trade-off: the listed capacity is 4.2L / 3.81Qt, so it is the smaller of the two and you will cook larger sweet potato loads in more than one round.
• Subiudzzh 4.44Qt — biggest strength: the bigger 4.44-quart basket, which matters when you are piling in cubed sweet potatoes for a family rather than a single serving.
• Subiudzzh 4.44Qt — biggest trade-off: the wider body (12.6" across versus 9.84") takes more counter depth, and the main unit must never be immersed in water — only the glass pot goes in the dishwasher.
• Who each pick is for: DIITGGE for one or two people who want to watch the cook and keep the footprint narrow; Subiudzzh for small families who want maximum room per batch.
The DIITGGE 4.2L is built around visibility. Its borosilicate glass pot is 360° viewable, which means you can check how a sweet potato is caramelizing from the side, the front or above without pulling the basket out. That sounds like a small thing until you are air frying, because every time you open the appliance you dump heat and the cooking goes uneven. With a glass bowl you simply look.
On the sweet potato front, this unit ships with a dedicated sweet potato preset among its eight modes, alongside french fries, roast, chicken wings, egg tarts, grilled fish, grilled shrimp and steak. The 1200W heating element and turbo air flow are designed to reach temperature in a few minutes, so preheating is short. You can also override everything: time from 1 to 60 minutes and temperature from 176°F to 392°F, set on a touchscreen with a digital display that shows your settings and progress.
In my opinion this is the pick for a single cook, a couple, or anyone with a narrow counter slot. The 4.2L / 3.81Qt capacity handles a main plus a side, or a decent pile of sweet potato wedges, but it is not a family-batch machine. Skip it if you regularly feed four people sweet potato fries in one go — you will be running two rounds. Also note only the glass pot is dishwasher safe; the rest is hand care. The white body measures roughly 9.84" deep by 12.6" high, so it tucks into tighter spaces than the Subiudzzh.
The Subiudzzh 4.44Qt takes the same core recipe — 1200W, 110V, 176–392°F, up to 60 minutes, eight presets including sweet potatoes, touchscreen with digital display, borosilicate glass pot, white finish — and stretches the capacity. The 4.44-quart bowl is the headline. If your sweet potato plan is a sheet-pan-sized pile of cubes or a full basket of fries for the household, that extra room is what stops you from cooking in batches.
Its heating story is the same rapid-heat approach: 1200W brings the chamber up to temperature in minutes, and the glass pot stays viewable at 360° so you are not opening the unit and bleeding heat. Cleanup is straightforward — the non-stick surface releases food easily and the glass pot is dishwasher safe. One caution straight from the spec sheet: do not immerse the main unit in water, and hand wash the basket and accessories with warm soapy water.
Who should buy it? Small families, couples who cook big, and anyone who wants one pass instead of two. The trade-offs are real, though. The footprint is wider — 12.6" across versus the DIITGGE's 9.84" — so measure your counter first. And because it is a push-button plus touch control setup, the interaction is slightly different from a pure touchscreen panel, though both give you the same digital readout. Skip it if your kitchen is genuinely tight or you only ever cook for one.
• Best for watching the cook without opening the basket → DIITGGE 4.2L. Its 360° viewable glass pot is the whole point of the design.
• Best for bigger sweet potato batches → Subiudzzh 4.44Qt. The 4.44-quart capacity beats the 4.2L / 3.81Qt bowl when you are feeding more than two.
• Best for a small kitchen footprint → DIITGGE 4.2L. At 9.84" deep and 12.6" high it slides into narrower slots.
• Best for the same cooking range on either → tie. Both run 176°F to 392°F and up to 60 minutes, so recipes transfer directly.
• Best for identical power and preheat speed → tie. Both are 1200W on 110V with rapid heating.
• Best for preset convenience → tie on count. Both offer eight presets including sweet potatoes, french fries, chicken wings, steak and more.
• Best for easy cleanup → Subiudzzh 4.44Qt, narrowly. It adds a non-stick surface, though on both models only the glass pot is dishwasher safe.
• Best for whole sweet potatoes → either. Both have a sweet potato preset; pick capacity based on how many you cook at once.
I would buy the Subiudzzh 4.44Qt. In my opinion, when the two units share the same wattage, the same temperature band, the same preset list and the same glass-pot concept, the deciding factor is how much food fits in one round — and the larger capacity wins that argument for most households. The only reason I would flip to the DIITGGE 4.2L is counter space: if a 12.6"-wide body will not fit where you cook, the narrower unit is the smarter buy, and you still get the full viewable glass pot. Check the current price on Amazon for both before you commit.
FAQ
how to air fryer sweet potatoes
Use the sweet potato preset on either unit, or set 392°F and run 20–40 minutes depending on size. Because the pots are glass and 360° viewable, check browning through the bowl instead of opening the appliance. Prick whole potatoes first so steam escapes evenly.
how to air fryer sweet potato cubes
how to air fryer sweet potato fries
Cut fries evenly, oil lightly and cook near 380°F for about 15–20 minutes, shaking halfway. Both machines top out at 392°F with a 60-minute timer, so either handles this. The DIITGGE 4.2L is fine for one or two portions; go Subiudzzh for a full family basket.
how to air fryer sweet potato whole
Rub whole potatoes with oil, prick the skins and cook at 392°F for 30–45 minutes, turning once. Both air fryers reach that maximum temperature and offer a sweet potato preset as a starting point. The glass pot lets you judge doneness by sight without releasing heat.
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