01
Keeping track of where you are in the plan.
How Sero helps
Your care team sets the phase, and Sero shows it at the top of Today.
YOUR IBS DIET EXPERIMENT
A careful notebook for your gut.
Sero is a notebook for the IBS diet experiment you’re running with your care team: meals, symptoms, bathroom notes and challenge results, in one calm place.
On iPhone, Sero is part of Pippa Companions. Open it and pick Sero. On Android, get Lumi: the same care, with a companion.
Sero
For people with IBS working through a diet plan with their care team.
Your plan, set by your care team
Meal, symptom, bathroom in a tap
Patterns show their uncertainty
No good or bad foods
DIGESTIVE HEALTH (IBS)
An IBS diet plan is an experiment you run day by day.
People with IBS, Crohn’s, colitis and other gut conditions are often asked to keep a food and symptom diary so they and their dietitian can look for patterns, sometimes as part of a guided elimination diet like low FODMAP. Symptoms can show up hours later, bathroom details are awkward to write down, and apps that label foods "good" or "bad" or announce your "triggers" can push people into cutting out more than they need to.
02
Noting meals, symptoms and bathroom visits is a lot.
How Sero helps
Each is one tap from Today, with challenge results too when your plan includes them.
03
Patterns can look more certain than they are.
How Sero helps
Sero shows how many notes a pattern rests on and what’s missing, and never says a food caused a symptom.
04
Some symptoms need a clinician quickly.
How Sero helps
Warning signs open your care team’s steps right away, and noting them is never required first.
Your phases, challenges and any diet changes come from your clinician or dietitian. Sero keeps the notebook.
HOW IT WORKS
Three small steps, all optional.
Connect to your care team
Your phase and plan appear in Sero.
Note meals and symptoms
One tap each from Today or the + button.
Look back together
Patterns and notes, ready for your next visit.
INSIDE THE APP
A look at Sero.
Real screens from the current build, as a new account sees them.
Today, at a glance
A greeting, where you are in your plan, and quick buttons for a meal, a symptom or a bathroom note.
Easy on the eyes at night
Sero follows your phone’s light or dark setting, with a high-contrast option too.
Help is one tap away
Today’s notes, your care team, and steps for a symptom that worries you.
WHAT IT DOES
Your IBS diet experiment.
For people with IBS working through a diet plan with their care team.
Your plan, from your care team
The phase and challenge plan come from your care team, shown plainly.
Quick notes
A meal, a symptom, a bathroom visit or a challenge result.
Honest patterns
Patterns show how many notes they rest on and what’s missing. Sero never claims a cause.
Ready for visits
Bring your notes and questions, and share what you choose.
PRIVACY
Your notes are yours.
You choose who sees it
Nothing goes to a care team unless you connect to a participating program. Once you connect, they can see what you log in the app, and you can stop sharing at any time.
Your photos live on your phone
Meal photos are kept on your device. Sero has no AI chat and no AI food naming. You can delete your account and data at any time.
No ads, no selling data
We do not sell your data or show ads. Read exactly what we collect in our policies.
FAQ
Good questions.
Is there a separate Sero app for iPhone?
No. On iPhone, Sero is a program inside Pippa Companions. Download Pippa Companions, open it and pick Sero. Sero isn’t on Android yet. On Android, Lumi covers the same care, with a companion.
Does Sero tell me which foods are safe?
No. Sero does not diagnose a digestive condition, identify food triggers, or tell you which foods are safe. Any diet change should come from your clinician or dietitian.
Does my care team see everything?
Only once you connect to a participating program with a code or invite. After that they can see what you note in the app, and you can stop sharing at any time. Nothing is watched in real time.
Is this an emergency service?
No. The app does not monitor your notes in real time. If you need urgent help, call 911 or your local emergency number.
What does it cost?
The app is free to download. Noting, asking for help, your care team and your history never depend on a payment.
PIPPA COMPANIONS
Part of the Pippa Companions suite.
On iPhone, Sero lives inside Pippa Companions: one app with a program for each kind of care. On Android, each companion is its own app on Google Play.
One app, many programs
Pippa Companions has a program for each kind of care, all in one app on your iPhone.
Pick yours
The first time you open it, choose your program from a home screen of icons. Press and hold an icon to see what it’s for.
Separate sign-ins
Each program keeps its own account and its own notes.
One Pro for all
Pro is optional. One Pippa Companions Pro subscription covers every program.
Hydration and POTS
Diabetes
Bariatric surgery
IBS and gut symptoms
LumiCompanionSeroYou’re hereAfter surgery or new meds
Cancer treatment
Older adults
Eating recovery
Companion programs come with a friendly character. Plain-style programs have the same care tools, without one.
See Sero with your patients in mind
A 15-minute walkthrough of Sero and the care-team dashboard, with your program's workflow in mind. No slides, just the product.
Here as a patient? Take your time. Everything in Sero is optional, and logging is free.
On iPhone, Sero is part of Pippa Companions. Open it and pick Sero. On Android, get Lumi: the same care, with a companion.
Sero - IBS Diet Notebook
Sero is a notebook for the IBS diet experiment you’re running with your care team: meals, symptoms, bathroom notes and challenge results, in one calm place.
On iPhone, Sero is part of Pippa Companions. Open it and pick Sero. On Android, get Lumi: the same care, with a companion.