Aidy is an IBD tracking app from Aidy, Inc. built around daily check-ins, food-photo logging and exportable reports, available as an iPhone app or by text message in the US. Mirae is an everyday guide for understanding IBD, bringing scattered health information together and moving towards remission.
Both products focus on Crohn's disease and ulcerative colitis, and both describe themselves as free for patients. The main differences are how you log, what other health information each can bring in and where each is available.
How we compared
We checked intended user, condition focus, food and symptom logging, medicines, markers, connected data, educational content, appointment preparation, platform, price and limitations.
Quick comparison
| Area | Mirae | Aidy |
|---|---|---|
| Best for | Understanding IBD, seeing patterns and keeping health information together | Structured daily check-ins and food-photo trigger tracking |
| Product type | AI-based everyday guide for living with IBD | IBD tracking app with a chatbot and learning content |
| Condition focus | Crohn's disease, ulcerative colitis and ongoing GI context | Crohn's disease and ulcerative colitis; Aidy says support for other conditions may come later |
| How you log | Both ways: AI chat by text or photo, or structured logging of bowel movements, symptoms, medicines and more | Daily check-ins with quick taps, food photos and an in-app chatbot; logging by SMS text message is also offered in the US |
| IBD-specific information captured | Bowel movements, symptoms, medicines, food, sleep, stress, emotions, lab results and questions | Symptoms, bowel movements, meals and treatments including biologics |
| Treatment and disease-activity tools | Structured medication schedules and reminders; disease-activity check-ins including SCCAI; CRP and calprotectin results tracked over time | Medication tracking including biologics; prompted symptom check-ins |
| Connected health or medical data | Available records through HealthEx and supported wearable data | No current public connector information verified |
| What the user gets back | A fuller view of changing symptoms, lab trends and patterns | Trend analysis, food-tolerance insights, personalised lessons and exportable reports |
| Appointment or clinician support | Pre-Visit builds a focused appointment agenda and health summary the patient can review, save as a PDF and share with their clinician | Exportable physician-friendly PDF reports |
| Provides licensed clinical care? | No | No; Aidy describes itself as a self-tracking and educational tool |
| Cost | Free | Aidy's site says it is free with no paid user subscriptions; its App Store listing shows optional "Aidy Premium" in-app purchases at $9.99 and $79.99 |
| Availability or important limitation | iOS and Android; connected features vary by region | iPhone app (iOS 15.1 or later) or US text messaging; no Android app found at the time of checking |
Where Mirae fits
Mirae is built for both Crohn's disease and ulcerative colitis. Food sits beside bowel movements, symptoms, medicines, emotions, sleep, stress, CRP, faecal/fecal calprotectin and available connected medical records.
Logging works both ways. The patient can describe what happened in ordinary language or with a photo, or use structured logging for bowel movements, symptoms, medicines, food, sleep and stress; either way, Mirae organises it into a health record that builds over time. It also supports structured medication schedules with reminders and disease-activity check-ins including SCCAI, and tracks CRP and calprotectin results so lab trends sit alongside daily context.
Mirae is free, with no paid plan, trial or card required.
For appointments, Mirae's Pre-Visit feature creates a focused agenda and health summary that the patient can review, save as a PDF and share with their clinician.
Where Aidy fits
Aidy centres on a structured daily record. Its site and App Store listing describe quick symptom check-ins, bowel-movement logging, food-photo capture that identifies possible trigger foods over time, medication tracking including biologics, trend analysis and exportable physician-friendly reports, plus bite-sized educational lessons.
A distinctive option is logging by text message: Aidy offers a US phone number so a patient can record symptoms over SMS without installing anything. The app itself is currently iPhone-only, and we could not find an Android app at the time of checking.
Aidy's site says the service is free with no paid user subscriptions, funded through work with health plans, employers and researchers. Its App Store listing separately shows optional "Aidy Premium" in-app purchases at $9.99 and $79.99; we could not verify what those unlock.
Both keep a structured record
Aidy's repeated daily check-ins make it easy to record the same fields the same way each day, which suits people who want a consistent self-tracking routine.
Mirae offers structured logging too — bowel movements, symptoms, medicines, food, sleep, stress and disease-activity check-ins including SCCAI — with AI chat as a second way to log on days when a form feels like too much. The difference is what sits around that record: connected medical records, CRP and calprotectin trends and supported wearable data where available. For someone whose priority is understanding change across daily life and medical information together, that wider context is the difference.
Neither approach can prove that a food caused inflammation or diagnose a flare. Our food and IBD diary guide shows how to keep food tracking focused, and our appointment preparation guide covers turning a record into a useful care conversation.
Which should you choose?
Choose Aidy when you want a structured daily check-in routine on an iPhone, or the option to log by US text message, and self-reported tracking with exportable reports covers what you need.
Choose Mirae when you want a free guide on iOS or Android that helps you understand what is changing, bring daily experience, medical history, lab markers and connected records together and see patterns on the way towards remission.
Weighing more than these two? See our roundup of the best IBD apps.
Disclosure
Mirae Health publishes this comparison and makes Mirae. Aidy did not contribute. This is a commercial product comparison, not an independent or clinical review.
Features, prices and availability were checked on 21 August 2026 and can change. Neither app can diagnose a flare or prove that food caused inflammation. Rapidly worsening symptoms and medication questions need an appropriate medical professional rather than a diary.
References
- Aidy, Inc. Aidy. Aidy, accessed 21 August 2026.
- Aidy, Inc. Aidy: Manage Crohn's & Colitis. Apple App Store, accessed 21 August 2026.
