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Solve gut issues
Learn which foods and routines tend to work better for you when bloating, heaviness, or discomfort gets in the way.
Personal gut intelligence
A small breath device that reads how your gut responds to food.
Whiff learns the patterns behind your meals, builds a picture of what is normal for you, and turns it into clearer everyday food choices.
Who is Whiff for
For anyone who wants to understand their gut.
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Unlock peak gut health
Make gut wellness a signal you can follow, alongside the other habits and metrics you care about.
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Stay curious
Connect what you eat to how you feel and bring more confidence to your everyday choices.
The core promise
Your gut is personal. Your guidance should be too.
A device that reads how your gut responds to food — and tells you what to eat today.
Whiff is a small breath device built on real gut science. It measures how your body responds to the food you eat, and over time builds a picture of your gut that's uniquely yours — so it can tell you how your gut is doing today, and what to eat next.
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Measure your real response
Whiff reads how your gut actually responds to each meal — real signals from your body, not guesses or generic food charts.
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Build your personal picture
Meal after meal, Whiff's models learn what's normal for you, building an understanding of your gut that gets sharper the longer you use it.
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Know what to eat today
Each day, Whiff shows you how your gut is doing and what to eat next — shaped by your own patterns, your goals, and how you're feeling.
Whiff keeps the science in the background and gives you the part you can actually use.
Designed for everyday life
Breath inletBreathe here for about ten seconds
Status lightShows when Whiff is ready
Air outletKeeps airflow clear between check-ins
USB-C chargingSimple, familiar charging
Power buttonPress once to start
Compact bodyEasy to keep within reach
How it fits your day
A simple routine. A more personal answer.
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Breathe
Breathe into Whiff for about ten seconds.
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Log
Tap in what you ate and how you felt.
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Analyse
Whiff matches each check-in to the meal and waits for a pattern to repeat.
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Recommend
Get simple guidance on what to eat or swap next.
What you unlock
See what works. Know what to do next.
Whiff brings your meal patterns, daily direction, and next useful action into one personal view.
The blog
Notes on personal patterns and everyday choices.
Gut and skin
The gut-skin connection: a simple place to start
Your gut is not the answer to every skin concern, but it can influence inflammation, comfort, and the way your skin feels. Here is a practical place to start.
2 AUG 2026 · 6 MIN
Personal patterns
Why your body needs a personal baseline
Generic wellness rules start with averages. Useful guidance starts by learning what normal looks like for you.
MARCH 2026 · 5 MIN
Food and context
Why the same meal can feel different on different days
Food does not arrive in a vacuum. Timing, portion, routine, and the rest of your day can change the experience.
JUNE 2026 · 5 MIN
How does Whiff work?
You breathe into the small device for about ten seconds, then log what you ate and how you felt. Whiff matches the two together and, over time, learns how your body handles different foods. Once it knows your patterns, it tells you what to eat next.
What does the device actually measure?
When food isn't fully absorbed, the bacteria in your gut break it down and release tiny traces of gas onto your breath. Those traces only come from your gut — your own cells don't make them. Whiff reads them, so instead of guessing how a meal affected you, it can actually see it.
Is this a medical test or a diagnosis?
Neither. Whiff isn't a diagnosis and doesn't replace your doctor. It simply shows how your gut responds to the food you eat, so you can make better everyday choices about what works for you and what doesn't.
How is this different from a lab breath test?
A lab test is a single, expensive snapshot taken in a clinic on one day. Whiff sits at home with you and keeps learning meal after meal, across real food and real life — so you end up with a personal map of your own body, not one reading from one morning.
How long before I see my results?
Your food responses start showing up from the very first day. It takes about a week of normal use for Whiff to settle into your personal baseline — once it does, the picture only gets sharper the more you use it.
Do I have to log every meal?
Logging is quick — a tap or two for what you ate. The more you log early on, the faster Whiff learns you. And it won't jump to conclusions: it stays quiet until it sees the same pattern repeat, so you can trust what it tells you.
Early access
Get early access to Whiff.
Join the waitlist for product updates and priority access.