OUTIN NANO | REVIEW

If you’re like me, and never want to settle for bad hotel drip coffee, or instant sachets, the OutIn Nano is worth taking a closer look. A compact, battery-powered gadget that promises 'real espresso' on the go — whether you’re brewing in a hotel room, sipping a shot on an airplane, or pulling coffee at a campsite after a long hike.

Unlike most travel coffee makers, the OutIn Nano doesn’t just rely on hand pumping (which lets be honest, can be disastrous or awkward); it heats water and applies consistent pressure automatically, giving travelers an authentic espresso experience without bulky gear. The battery heats water from cold if you are truly in the middle of nowhere, but if you have a kettle nearby, you can top it up with boiling water and make months worth of espresso without needing a charge.

For anyone serious about travel espresso makers or hunting for the best portable coffee machine for camping, flights, and hotel stays, the Nano stands out as one of the most versatile options available.

Who Are Outin?

OutIn is a small consumer coffee tech brand that has focused on building compact, battery-powered espresso devices and accessories aimed at travel and everyday portability. They position the Nano as a premium, lightweight solution that heats cold water and produces pressurized extraction so you can get an espresso-style shot without a separate boiler or pump. 

Testing

I used the OutIn Nano for 1 month, trying to brew a shot every day, in different situations. Mostly at home, but I took it on some daytrips, a overnight stay on an island, some walks in the forest, and even brewed a shot on a row boat.

It was a bit of a learning curve, especially with the grind-size for the coffee. I initially thought I should be getting a really fine espresso grind, but personally found it was better grinding a tiny bit coarser (35 on a Kingrinder K6). The shots pulled through in good time, but had some nice body and lingering taste. Grinding too fine ended up choking the machine.

The OutIn feels very solid, and is constructed using quality materials. There is a seperate attachement for those who want to use coffee-capsules, and one for loading regular coffee in. The tamper works fine. The operation is smooth and quick, and the results are definitely better than I was expecting from a portable espresso maker. Having a small basket did hinder me when I wanted to brew a larger drink, or if I was at the park with a friend, and it is a bit time-consuming to clean, and re-brew, however it is possible. I'd personally say use this if you are travelling solo, and then you'll be fine. Alternatively, pay for the upgraded basket with more storage.

I feel I got a solid overview of what a potential customer would experience, if they bought this product. As in life, nothing is perfect, but it was an absolute buzz to be able to brew shots of espresso in a park and hand them to my friends. Below are some of the positive and negative conclusions I came to after thoroughly testing this product.

A massive thank you to OutIn for sending it to me, and they made no attempt to influence my review at all.

The Positives

• Truly all-in-one: This can heat water without a kettle. Perfect for situations where it's difficult to boil water, like picnics, hikes, etc.
• Pocketable for its class: at ~670 g it’s heavier than the smallest hand-pumped makers but still compact and easy to pack in a carry-on or daypack.
• Fast heatup: Approx 200 seconds from cold to brewing temperature in normal conditions — quick enough for morning rituals.
• Consistent pressure: Built in pump delivers up to ~20 bar, creating crema and pressure-driven shots without manual pumping.
• Simple workflow: Load coffee, add water (or let it heat), press a button — low-fuss when you’re tired or in tight spaces.
• Battery life & charging: multi-brews per charge (especially if you add boiling water) and USB charging make it convenient for travel.
• Case: The travel case is super handy and fits some capsules and the dosing tamper.

The Negatives

• Heavier than pure hand-pump models: At 670 g it’s not ultralight for minimalist hikers.
• Battery dependence: If you run out of charge mid-trip, you’ll need access to USB power — no manual backup.
• Small water capacity: Limited to single shots, so making multiple drinks for a group takes time.
• Heat-up time in cold environments: Around 200 seconds can stretch longer in winter or at high altitudes.
• Small basket: It ships with an 8g basket, not really enough to make even one drink, so you're going to be forced to pay for the larger basket which adds a hefty $40+ onto your final bill. This is almost a must-do, or you'll be grinding, brewing, cleaning, grinding, brewing, cleaning just to get one drink in the morning.
• Price point: More expensive than basic hand-pump espresso makers, so value depends on how much you’ll use the all-in-one features.

Practical Traveling Tips

• Beans & grind: Use medium-dark beans if you want the most consistent results, and make sure to grind fine, but not too fine. If you drink lighter roasts, accept you may get a more acidic shot. 
• Preheat strategy: A short preheat cycle (run a warm water cycle into the cup) helps stabilize extraction and is worth the battery use when you want a cleaner shot. It sounds excessive, but the results are objectively better. If you are using a kettle, then this is not at the expense of battery use, so it's a good idea to run a blank shot through to heat up the machine.
• Use what it’s good at: Short single-person espresso, an americano when you have water, or a quick ristretto while hiking are the Nano’s sweet spots. It is what it is, and we think that's what makes it a great add-on for people on the move.
• Buy the Carry Case: The carry-case gives you the option to house the OutIn in a protective bag, but also has room on the side for either capsules, or a handgrinder if you use one of the smaller models (A K6 actually fits perfectly).

Final Thoughts

Buy it if you travel frequently, sleep in hotels often, fly, or camp and want an espresso with minimal kit. It’s a big step up from a novelty pod and is genuinely useful.

Skip it if: you’re an espresso perfectionist with light-roast obsession as the extractions can come off sour or overly acidic, or you absolutely must keep packing weight to a minimum — a manual Nanopresso or a tiny lever pump will be lighter and more tweakable.

Click on the link below if you are interested in purchasing the OutIn Nano. They also recently launched a smaller, more travel-friendly model which we hope to test in the near future.

If you would like to purchase the Outin, click here:
Link: https://outin.com/MOUTH

Code: MOUTH