Continuous and personalized GI care for your child.

The Fiber app and our personal AI care agents support your family 24/7 between visits.

Join the waitlist Talk to our team

  • Here’s this morning’s stool

    Stool · Type 4Saved to Sam’s day

    Soft and well formed: a healthy stool.

    Morgan Lee, NP can see it in Sam’s record.

  • Lunch · Bean and cheese wrapMeal saved · Most of it

    Fiber today14 of 18 g

  • Clinical progressTreatment response improving.

    Care plan reviewed by Morgan Lee, NP

  • Morgan Lee, NPThu at 10:30 am30 min video · Confirmed

Conditions we care for

  • Functional constipation
  • IBS
  • Celiac disease
  • IBD
  • Feeding difficulties
  • Nutrition and weight management

A child’s condition is there every day. A specialist sees it a few times a year.

GI care shouldn’t be episodic.

  • Months on a waitlist
  • 20-min visits
  • Guessing at home
  • Doing it alone

Care that’s there every day.

  • Daily monitoring

    Log the day in a few words. Fiber keeps the plan in view.

    In the app, a parent types “Two cups of water with lunch”. Fiber saves it as a water entry that Morgan Lee, NP can see, the day’s water fills to 2½ of 4 cups, and Fiber offers a reminder at 3:05 pm for the 1½ cups to go.

  • A stool photo, read by AI

    Fiber suggests the Bristol type. You confirm it.

    A parent takes a stool photo. Fiber’s AI scans it and suggests Bristol type 4 on the seven-type scale; the parent taps Use Type 4 and it is added to today’s entry.

  • Early intervention

    Our clinicians reach out between visits.

    A parent asks whether he can have yogurt at school instead of milk. Priya Shah, RD replies that plain yogurt is a good swap, and signs a meal plan change from milk to plain yogurt.

  • Resolved at home

    A plan that fits family life, and a steadier week. Our clinicians stay in touch.

    Morgan Lee, NP signs a care plan change: evening medication from half to three quarters of a capful, and the parent logs the evening dose as taken. A stool entry of Bristol type 4, a week of entries easing toward the care plan’s goal, and Morgan’s review: a steady week, keep the plan as it is.

  1. NowPediatric GI and nutrition
  2. NextMore pediatric specialties

Patient inputs

Logs · symptoms · visits

  • Plan fit
  • Change over time
  • Connected signals

Specialist expertise

Clinical · nutrition · signed plans

A change to review

Progress
Symptoms changed
Plan fit
Routine changed
Attention
Clinician review

Sources linked · History compared

  • Coach
  • Flag
  • Escalate

Care team

NP and RD

Approved safety rules

Follow-up becomes new input

  1. Patient inputsDaily logs, symptoms and visits from the family app.
  2. Plan fit · Change over time · Connected signalsInputs compared with the plan and the child’s history.
  3. A change to reviewPatient summary, with its sources linked.
  4. Specialist expertiseClinical · nutrition · signed plans
  5. Coach · Flag · EscalateCoordinated next steps for the care team.
  6. Care teamNP and RD
  7. Approved safety rulesSpecialist expertise connects to the care team. Follow-up becomes new input.

Between visits, still in care.

  1. Your child’s practice sends a referral. We reach out, answer questions and get your family set up.

  2. A video visit to understand your child’s history and build a care plan together.

  3. A meal plan built around the foods and routines your family already has.

  4. Log the day in a few words. When an entry needs a closer look, Fiber offers to share it with our clinicians, and they reach out.

Research first. Early results.

How Fiber began, and where it stands today.

  1. Pooficient, our consumer app, lets families log meals, stool photos and medicines, and see how they connect. We built it with pediatric specialists.

    Figures: Pooficient internal user data and a retrospective cohort, February 2025 to February 2026. Internal study · publishing soon.

    pooficient.com (opens in a new tab)
    • 1,000+families, across 12+ countries
    • 93%of AI classifications matched the parent’s Bristol score
    Pooficient app welcome screen: “A parent’s guide for poop, nutrition, and gut health”

    App Store (opens in a new tab)Google Play (opens in a new tab)5.0

    • 91%of families used AI stool-photo classification
    • 70%of families still active at eight weeks

    It started with an app.

    Pooficient app welcome screen: “A parent’s guide for poop, nutrition, and gut health”

    App Store (opens in a new tab)Google Play (opens in a new tab)5.0

    Pooficient, our consumer app, lets families log meals, stool photos and medicines, and see how they connect. Built with pediatric specialists.

    • 1,000+families, across 12+ countries
    • 91%used AI stool-photo reading
    • 93%of its readings matched the parent’s

    Pooficient internal user data and a retrospective cohort, February 2025 to February 2026. Internal study · publishing soon.

    pooficient.com (opens in a new tab)

  2. We built the same approach into a clinician tool in our CMO’s practice, to follow children with functional constipation between visits. Fiber runs on this model.

    Aydin Yagmurlu, MDOur Chief Medical Officer

    Internal study · publishing soon. Retrospective and non-randomized, so these are associations, not proof of cause. Our care protocol follows ESPGHAN and NASPGHAN guidelines. No endorsement by either society is implied.

    Clinical resolution at three months Internal study · publishing soon

    92.9%With Pooficient between visits · 28 children seen at three months

    57.6%Conventional care · 33 children seen at three months

    +35.3 percentage points more children resolved

    • Kept to the care plan80% or more of the plan followed96.4% vs 69.7%26.7 points more
    • Treatment stepped upAnother clean-out, a higher dose or an added medicine7.1% vs 39.4%32.3 points fewer
    • Needed an unplanned call or messageChildren with at least one3.6% vs 27.3%23.7 points fewer
    • Calls or messages per childUnplanned, over three months0.04 vs 0.46About 11× fewer

    Already at one month

    89.7% vs 55.0% resolved

    89.7% vs 60.0% kept to the plan

    10.3% vs 47.5% treatment stepped up

    74
    children with functional constipation (Rome IV)
    29 · 45
    followed with Pooficient · in conventional care
    Alike
    at the start, in age and in how long constipation had lasted
    p ≤ 0.016
    for every result shown, unadjusted

    Tested in our CMO’s clinic.

    Resolved at three months Internal study · publishing soon

    92.9%With Pooficient · 28 children

    57.6%Conventional care · 33 children

    Aydin Yagmurlu, MDOur Chief Medical Officer

    The same approach, built into a clinician tool in our CMO’s practice to follow children between visits. Fiber runs on this model.

    • Kept to the care plan96.4% vs 69.7%
    • Treatment stepped upAnother clean-out, a higher dose or an added medicine7.1% vs 39.4%
    • Needed an unplanned call or message3.6% vs 27.3%
    • Calls or messages per child0.04 vs 0.46

    74 children with functional constipation. Retrospective and non-randomized: associations, not proof of cause; p ≤ 0.016 for each result.

  3. A 2025 Elsevier review of digital tools in pediatric neurogastroenterology lists Pooficient among the consumer apps relevant to pediatric gastroenterology: the one for functional constipation, built for children.

    The review’s author, John M. Rosen, MD, now advises Fiber.

    Read the review (opens in a new tab)

    Gastroenterology Clinics of North America

    Elsevier · Vol. 54, Issue 3 · September 2025

    “How Artificial Intelligence, Virtual Reality, and Other Digital Technologies Are Changing the Field of Pediatric Neurogastroenterology”

    John M. Rosen, MD · University of Arkansas for Medical Sciences · pp. 667–679

    John M. Rosen, MD
    Table 1Select consumer-facing digital applications relevant to pediatric gastroenterology (excerpt)
    NameIntended usesDisease focusKey feature
    PooficientTracking, sharing, personalized recommendationsFunctional constipationPediatric specific

    One of 5 apps in the table, and the only one for functional constipation.

    Where it appears
    Information access: data from the patient and family
    What the review covers
    AI, virtual and augmented reality, and how families and clinicians share data

    Noticed by the field.

    Gastroenterology Clinics of North America

    Elsevier · Vol. 54, Issue 3 · September 2025

    “How Artificial Intelligence, Virtual Reality, and Other Digital Technologies Are Changing the Field of Pediatric Neurogastroenterology”

    John M. Rosen, MD · University of Arkansas for Medical Sciences · pp. 667–679

    John M. Rosen, MD

    This 2025 review lists Pooficient among the consumer apps relevant to pediatric gastroenterology.

    From its Table 1

    Intended uses
    Tracking, sharing, recommendations
    Disease focus
    Functional constipation
    Key feature
    Pediatric specific

    One of 5 apps in the table, and the only one for functional constipation. The author, John M. Rosen, MD, now advises Fiber.

    Read the review (opens in a new tab)

  4. Fiber serves its first patients in January 2027, starting with pediatric GI and nutrition. Families can join the waitlist now.

    Join the waitlist
    Serving first patients

    January 2027

    First
    Pediatric GI and nutrition
    Waitlist
    Open

    How we got here

    1. Pooficient1,000+ families across 12+ countries, rated 5.0
    2. Our CMO’s clinic92.9% resolved at three months, vs 57.6%
    3. The fieldListed in a 2025 Elsevier review
    4. FiberFirst patients, January 2027

    First patients.

    January 2027

    Starting with pediatric GI and nutrition. Families can join the waitlist now.

    First
    Pediatric GI and nutrition
    Waitlist
    Open
    Join the waitlist
Clinical leadership and builders. Physicians who design our care pathways, with engineers behind apps used by millions.Meet the team