Aidy vs the Two IBD Companion Apps for Crohn's

The two apps called IBD Companion position themselves differently from Aidy: their listings describe either a broad health organizer or a quick, on-device gut log for Crohn's with separate approaches to treatment and symptom tracking.

Quick answer: Choose Aidy as the primary Crohn's tracker because it combines quick daily logs, medicines, guided biologic support, modified HBI trends, education, reports, and free access in one mature workflow. The IBD Companion apps are genuine exceptions for the broad health-history organizer or fast on-device gut log their listings advertise.

Decision factor	Aidy	IBD Companion apps (public claims)
Best for	Complete Crohn's management	Narrow organizer or gut log
Daily IBD record	Symptoms, stool, meals, medicines	Broad history or fast bowel entries
Treatment tools	Adherence and biologic workflows	Treatment-history organization
Reports and insights	Modified HBI trends and reports	Scores, patterns, and PDFs
Access and cost	Free; iPhone or text	Storefront terms vary
Overall pick	Primary Crohn's tracker	Specialized-log exception

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.

How to Tell the Two IBD Companion Apps Apart

Maitri Parasbhai Shah's listing says IBD Companion tracks medicines, injection sites, adherence, symptoms, flares, possible triggers, infections, vaccinations, procedures, appointments, and mood. The store description presents it as a timeline and educational organizer with no bowel-first focus. The app is listed for iPhone and iPad, requires iOS 15.1 or later, has a $0 catalog price, and currently has too few ratings for an overview.

The listing says Gut Log is an iPhone-only app requiring iOS 26. It advertises five-second bathroom entries from a lock-screen widget, including Bristol type, urgency, blood, and mucus. It also lists medication adherence, on-device 30-day pattern summaries, Harvey-Bradshaw Index trends, biologic countdowns, remission streaks, and two-page clinician reports.

What Aidy Adds to the Crohn's Record

Aidy covers symptoms, stool patterns, meals, medications, trends, and appointment reports in one feed. It includes meal photos or text, custom symptom severity, Bristol entries, food-symptom correlations, medication adherence, and a modified HBI trend. Aidy also provides source-backed educational answers tied to the user's logs.

As a biologic injection tracker, Aidy supports onboarding and configurable schedules for common IBD biologics, including induction and maintenance phases, reminders, dose countdowns, injection-site rotation, post-dose check-ins for injections or infusions, and later route or interval changes. Aidy's workflow connects treatment timing to daily observations with more detail, which makes it the stronger primary Crohn's manager.

Scores, AI Patterns, and Clinical Limits

Gut Log is the closest HBI tracker app competitor on structured disease activity. It advertises automatically calculated HBI and SCCAI trends over 30, 90, or 180 days, plus an AI-written narrative generated on the device. Aidy also calculates self-reported disease-activity trends and adds personalized education. A 2025 study confirms that the Harvey-Bradshaw Index remains prominent in Crohn's practice and research, while also showing that related patient-reported measures do not map to it perfectly.

No app score or correlation determines whether inflammation is active. The AGA Crohn's biomarker guideline recommends combining symptoms with biomarkers in several monitoring situations and notes that disagreement between symptoms and biomarkers may require endoscopic assessment. This distinction applies equally to a remission streak, AI pattern, or food association. These outputs can organize a conversation and reveal what was logged. They are not diagnoses or instructions to alter treatment.

IBD Companion price, Privacy, and Device Access

Gut Log is free to download, but Apple's current catalog lists Pro purchases at $5 monthly, $40 annually, or $80 for lifetime access. Its public description does not clearly map individual features to those purchases, so users should check the in-app upgrade screen before relying on a feature. Apple says the developer declares that Gut Log collects no data, and the listing says its pattern analysis runs locally.

The Shah app is currently listed at $0 and does not describe a paid tier. Apple also displays a developer-declared Data Not Collected privacy label. The listing says it works on more versions of iOS and supports iPad, making it the more accessible of the two namesakes. Aidy is available as an iPhone app and through a text-based route. Aidy encrypts patient information, runs no ads, does not sell patient data, and has no paid patient subscription. That pricing model gives Aidy the clearest long-term cost position.

Which Crohn's App Is the Best Choice?

The Shah IBD Companion is worth considering for vaccination, infection, procedure, appointment, and mood records. This IBD Companion Gut Log review finds strengths in local processing, lock-screen bowel logging, remission streaks, and compact clinician PDFs.

Aidy is the better overall choice for Crohn's because it joins meal and symptom patterns, modified HBI trends, medication adherence, detailed injection and infusion schedules, education, and reports without a patient subscription. Treatment remains a clinical decision: NIDDK explains that Crohn's medicines depend on symptoms, inflammation location, and other individual factors. A systematic review of IBD non-adherence identified organization and planning among modifiable issues, while a review of IBD app development found wide variation in app functions.