I am living in my London flat, and it gives me those dormitory vibes, or RV feel, with zero counter space. I was looking for an air fryer that doesn’t occupy my working countertop. Then I found the Ninja Crispi 4-in-1 Portable Glass Air Fryer, which proved to be a game-changer for me. This Ninja air fryer is a perfect partner for solo eaters and quick family meals. Forget those greasy takeaways as this Ninja Crispi Portable Glass Air Fryer squeezes anywhere. With its transparent glass pot and 4 modes (air fry, bake, re-crisp, proof), you can ensure healthier, oil-free meals in my active, busy life.
With its impressive feature set, the product has seen strong growth in the UK in 2025, as evidenced by Google Trends. That makes it an indispensable choice in home, kitchen & dining products.
In this blog post, we’ll cover an honest Ninja Crispi 4-in-1 Portable Glass Air Fryer review to help you understand why it’s a must-have pick for small space dwellers, busy parents and health-conscious singles or couples. Even if you are a first-time buyer, you’ll know a lot about this amazing Ninja Crispy Air Fryer.
Right, after that space-saving revelation, I couldn’t wait to rip into the box. It arrived in super compact Ninja UK packaging, which was far lighter than my clunky old air fryer. This sleek Ninja Crispy Glass Air Fryer pot is fully dishwasher-safe and, at 4.7L, is compact yet packs a 1500W power punch. It’s UK plug-ready like other electronic appliances in the country. It has slim dimensions and is available on online platforms like Ubuy UK.
I love the see-through window, and no peeking was needed for crispy food. But the buttons took me a minute to learn. Unboxing the Ninja portable air fryer was like Christmas in my tiny flat.
After unboxing it, let’s find out how it compares to a regular Ninja air fryer. I have broken down its key features in a quick comparison table. It helps you decide if the compact Ninja Crispi or a standard Ninja model makes more sense for your kitchen and lifestyle.
| Feature | Ninja Crispi 4-in-1 Portable Glass Air Fryer | Regular Ninja (Ninja AF100UK) |
|---|---|---|
| Capacity | 4.7L (1-4 portions) | 3.8L+ (4-6 portions) |
| Size (HWD) | Compact: ~30x25x25cm | Bulkier: ~33x26x35cm |
| Weight | 3.5kg (super portable) | 5kg+ |
| Pot Type | Clear glass (see food cook) | Opaque non-stick |
| Functions | 4-in-1: Air fry, bake, re-crisp, proof | 4-6 functions |
| Best For | Tiny kitchens, RVs, dorms | Families with space |
| USP | Portability & visibility | Larger batches |
After looking at this table, the Ninja Crispi 4-in-1 Portable Glass Air Fryer is a must-have for my flat life. In the small kitchen appliances category, you can’t have a better tool like this. But, if you are cooking for 5+ people, a standard Ninja would be a better option. Many users have shared their real-life experiences with this Ninja Crispy Air Fryer.
I love my Ninja Crispi. I also got this for its versatility — prepping, cooking, and storing all in one container. It being a non-toxic container, easy to clean, and not needing to be on the counter all the time were bonuses.
Source: r/airfryer (Reddit)
Now that we have already compared the Ninja Crispi 4-in-1 Portable Glass Air Fryer against my old regular Ninja, it’s time to find out what it can actually do in the kitchen. I decided to check this little beast for four proper tests with UK staples, and here’s the honest scoop from my tiny flat experiments.
I cooked 400g of McCain frozen fries at 200°C for 15 minutes, shaking them once during cooking. They came out golden and fluffy on the inside, with more crunch. That was not possible with my oven. There was no unpleasant sogginess, and I got pure Ninja crispy magic. It was a delicious experience for a lazy solo eater like me.
I tested the space in my air fryer with 12 party wings (about 1kg). No oil was needed, and I just cooked at 200°C for 25 minutes with a single flip. They fit easily without any overlapping. I got a perfect crisp outside and juicy inside. You can feed 2 hungry people easily with this amazing kitchen tool.
I left two cold Domino’s slices in Re-crisp mode at 180°C for 5 minutes. I was surprised to see the crust got crispier like a fresh-baked one, and the cheese melted gooey. I don’t have to deal with an unwanted soggy microwave mess. It was a total game-changer for Friday night leftovers.
I prepared two salmon fillets with lightly sprayed broccoli and asparagus, at 180°C for 12 minutes. The fish got a perfect flake, and the veggies got roasted with that healthy crunch. That was like celebrating oil-free meals on weeknights. As the batch size was small, it is often ideal for couples rather than crowds.
These hands-on runs with the Ninja Crispi 4-in-1 Portable Glass Air Fryer demonstrated that it’s a compact champ for small-space life. Several users have shared their experiences of preparing delicious recipes using this amazing Ninja air fryer on Reddit as well.
“I have the crispi, no regrets! Coming from different brands and sizes this one is just right, quite and powerful, convenient and almost 100% non toxic.”
Source: r/airfryer (Reddit)
Then they talk about what they can cook in the kitchen with this amazing tool.
All the basics in air fryer, Chicken Wings/Legs, Salmon, French Fries/Sweet Potato, Roasted Potatoes/Veggies Cubed potatoes, broccoli, cauliflower, Bacon and more!
Source: r/airfryer (Reddit)
Once those cooking tests were out, the real picture of the Ninja Crispi started to show. But still, we dig into the pros and cons to find where it excels and where it lags.
Pros
Cons
After having a look at those pros and cons, let’s come to the point: who deserves this Ninja Crispi 4-in-1 Portable Glass Air Fryer in real life? I have been living it daily in my cramped flat, and here’s my opinion.
Just grab it if you’re:
Skip it if:
You cook for a full family, as the capacity maxes at 2-3 people. In that case, try a bigger Ninja Foodi Max.
Time for my final words. For my tiny kitchen chores, the Ninja Crispi 4-in-1 Portable Glass Air Fryer is one of the best compact air fryers that I have ever tried. It transformed my rushed meals into crispy delights without taking precious counter space. If you are also living in a flat or RV, this little legend is your right companion.
You can buy the Ninja Crispi 4-in-1 portable glass air fryer in the UK from online shopping platforms like Ubuy.
Yes, it uses PFAS-free, PTFE-free CleanCrisp glassware with BPA-free lids as confirmed by Ninja.
It operates quietly, like a standard fan, and reviewers say it’s dorm-friendly, keeping your neighbourhood quiet.
The thermal-shock-resistant glass is durable and doesn’t get scratched easily, but always try to avoid dropping it.
It provides clear visibility despite some steam, and you can watch cooking clearly without opening it.
The dishwasher-safe glass pot comes with nonstick crisper plates that minimise sticking and can be cleaned with a simple wipe.
Ubuy content team consist of various writers specializing in different niches. They write blogs about different topics ranging from science, human relationships to the latest technology to share their thoughts, ideas and knowledge with the world.
Get every Newsletter
