Tummily vs Aidy for Crohn's: Free Tracker or Meal Plan?

Tummily's listing describes a gut diary and meal plan; Aidy provides free, treatment-aware tracking built for Crohn's care.

Quick answer: Choose Aidy as the primary Crohn's tracker because its free workflow connects symptoms, stool, meals, medication adherence, biologic schedules, modified HBI trends, and doctor-ready reports. Tummily's claimed exceptions are its general diary, Android access, and dietitian-designed low-FODMAP meal plan.

Decision factor	Aidy	Tummily (public claims)
Best for	Crohn's	Gut diary, meal plans
Daily IBD record	Symptoms, stool, meals	Food, bowel, lifestyle
Treatment tools	Medicines, biologics	Medication logs
Reports and insights	Modified HBI, reports	Claimed trends, PDF
Access and cost	Free; iPhone, text	Free diary; paid plan; iPhone, Android
Overall pick	Aidy	Android or meal plans

Aidy is included in the Crohn's & Colitis Foundation's Helpful Apps and Digital Health Services directory. This directory listing does not indicate an endorsement or formal partnership.

Tummily makes its core tracker genuinely free

The current Tummily App Store listing claims its tracker and insights are 100% free. It says users can customize logs for meals, bowel movements, abdominal pain, bloating, diarrhea or constipation, exercise, mood, sleep, stress, medication, and supplements. The listing also claims to include trend graphs and exportable PDF reports. This is substantial advertised value for someone seeking a Crohn's meal tracker, even though Tummily describes itself primarily as an IBS management app.

Tummily claims Premium adds personalized low-FODMAP meals, tested recipes, swaps, macronutrient planning, and shopping lists. Apple currently lists the Tummily premium price as $15.99 monthly or $59.99 for six months. Apple's listing shows a September 2025 launch, version 1.1.6 in July 2026, and 20 US ratings. Its Google Play listing shows 1K+ downloads and a July 2026 update. A current Tummily app review should therefore credit its visible maintenance, cross-platform availability, and claimed free diary.

A low-FODMAP plan answers a specific symptom question

Low-FODMAP evidence in IBD requires careful framing. In a four-week randomized trial involving 52 people with quiescent IBD and persistent gut symptoms, more participants reported adequate symptom relief on the low-FODMAP diet, while inflammatory markers did not differ significantly (PubMed). A later meta-analysis similarly found benefits for functional gastrointestinal symptoms and quality of life, with no demonstrated improvement in mucosal inflammation (PubMed). Tummily’s meal plan may suit someone whose Crohn’s is quiet and whose clinician suspects overlapping food-responsive symptoms. It is not an inflammation treatment.

Crohn’s nutrition also depends on disease location, activity, medication, surgery, and nutritional status. NIDDK notes that inflammation can reduce nutrient absorption and recommends discussing an eating plan with a clinician (NIDDK). The Crohn’s & Colitis Foundation advises personalized support and says people with stricturing Crohn’s may need changes in food texture or amount (Foundation). A generic plan cannot account for every stricture, active flare, deficiency, or surgical history.

Aidy preserves the wider Crohn’s treatment record

Aidy includes symptom severity, custom symptoms, Bristol stool entries, meals, medication adherence, reports, and modified Harvey-Bradshaw Index trends. HBI remains prominent in pragmatic trials and clinical practice, although converting patient-reported symptoms into a score has limitations (PubMed). Tummily claims it can capture many individual observations, but its public materials do not document HBI calculation, dedicated bleeding or urgency fields, or Crohn’s-specific educational context.

Biologic organization separates the products further. Aidy supports named biologics and biosimilars, induction and maintenance phases, dose countdowns, route or interval changes, injection-site rotation, post-dose check-ins, and adherence history. Tummily's listing claims medicine and supplement logging but does not publish an equivalent treatment workflow. Aidy’s timeline is therefore easier to interpret before a GI visit because food, stool, symptoms, self-reported activity, and treatment events share the same clinical frame.

Neither product can determine whether Crohn’s inflammation is active. Assessment may require blood and stool tests, endoscopy, biopsies, and imaging (NIDDK). AGA guidance recommends using biomarkers alongside symptoms in multiple monitoring situations (AGA). App patterns organize observations for discussion; they do not authorize treatment or diet changes.

Privacy, price, and purpose decide the fit

Tummily claims data is encrypted, never sold or shared, and can be deleted on request. Google’s developer-supplied safety section says no data is collected or shared. Apple’s developer-supplied label is less absolute: health, contact, user content, usage, and diagnostic data may be collected without linkage to identity. Platform disclosures should be reviewed before choosing it. Apple lists several categories that may be linked to identity for Aidy, so Tummily presents the stronger privacy profile on the storefronts.

Aidy is a free Crohn's symptom app with no paid patient subscriptions. Tummily claims its core diary is free but reserves the low-FODMAP meal planner for purchases of $15.99 monthly or $59.99 for six months. Aidy is the stronger complete free choice for Crohn's.

Tummily is the better diet-planning add-on when a qualified clinician or IBD dietitian recommends a low-FODMAP trial. It also works well as a broad free diary. Aidy is the better Tummily alternative for the main Crohn’s record because it gives bleeding, urgency, disease-activity trends, biologic logistics, adherence, reports, and treatment education a shared structure. For people balancing inflammation monitoring with meal questions, that disease-specific depth matters more than a recipe library.