Ninja Foodi MAX Dual Zone 4kg Food Capacity Air Fryer vs CRISPi 4-in-1 Portable Glass Air Fryer — Comparison

The Ninja AF400UK Foodi MAX Dual Zone 4kg Food Capacity Air Fryer costs £179 and represents Ninja’s larger dual-zone cooking approach. The Ninja CRISPi 4-in-1 Portable Glass Air Fryer - FN101UKST is also £179, but it belongs to the portable CRISPi glass-container range. They are not direct size rivals: one is a family-size drawer air fryer, while the other is a flexible container-based cooker for smaller, more mobile meal prep.

AF400UK has 4kg food capacity, a 9.5l litre capacity, Auto-Adjust Fan, 6 functions and dishwasher safe parts. FN101UKST has a 1700W Power Pod, two TempWare glass containers, 4-in-1 portable air frying, multiple functions, prep-cook-serve-store convenience, little-to-no-oil cooking and 1.4L or 3.8L capacity options. The AF400UK clearly wins on volume, while the CRISPi wins on container versatility and a glass format that can move between preparation, serving and storage.

Choose AF400UK if your priority is feeding several people quickly, cooking two foods in separate zones and making full use of the 9.5l capacity. It is the stronger choice for family dinners, larger freezer foods and batch portions. Choose FN101UKST if you are often cooking for one or two, want smaller glass containers rather than large drawers, or need a more portable system. At the same price, the trade-off is scale versus flexibility, not simple value. Also consider worktop depth, basket shape, cleaning routine, portion size and whether you usually cook one large batch or two separate foods, because those habits decide whether capacity, timing aids, presets or portability feels more valuable in daily use.

Bottom line: "choose AF400UK if you want 4kg capacity, 9.5l space and dual-zone family cooking / opt for FN101UKST if the 1700W CRISPi glass-container system suits compact, prep-to-store meals."