Aidy: an iPhone IBD tracker from Y Combinator’s Winter 2024 batch

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Aidy is a Winter 2024 Y Combinator company making an iPhone app for people living with Crohn’s disease and ulcerative colitis. The app is designed to help users keep up with day-to-day IBD tracking, organize treatment routines, and share clearer updates with their care team. Aidy says it is meant to support people with chronic health conditions by turning routine logs into a fuller picture of how symptoms and habits change over time. (ycombinator.com; aidyhq.com)

According to Aidy’s website and App Store listing, the app centers on tracking symptoms, meals, and medications. Users can log symptoms in a few taps, record food by photo or text, and track treatments including pills, injections, and infusions. The product also says it uses clinical indices such as the Modified Harvey-Bradshaw Index for Crohn’s and SCCAI for ulcerative colitis, along with trend charts and timelines, to help users understand disease activity over time. (aidyhq.com; apps.apple.com)

Aidy is aimed at people with IBD who want a more organized way to manage care between appointments, especially those using biologic treatments. The website describes use cases for people seeking a diagnosis, newly diagnosed users, those starting a first biologic, and people switching biologics or recovering from surgery. The App Store page adds features for biologic schedules, dose reminders, injection-site rotation, and post-dose check-ins, while the site says the app can also generate doctor-ready reports to help users communicate with GI providers. (aidyhq.com; apps.apple.com)

Getting started is straightforward. Aidy says the service is free, with no subscription, no in-app purchases, and no ads, and that users can start by text with a US phone number or use the iPhone app instead. The App Store listing identifies it as free, designed for iPhone, and available in English. It also lists the current iPhone requirement as iOS 15.1 or later. Aidy’s site says the text experience works on any phone in the US, including Android, but this article is focused on the iPhone app. (aidyhq.com; apps.apple.com)

There are also important limits to keep in mind. Aidy states that it is a self-tracking and educational tool, not medical advice and not a substitute for care from a qualified professional. The App Store notes that health data may be collected and linked to the user, and Apple has not verified the developer’s privacy practices. As with any condition-management app, its value depends on consistent logging and on how users and clinicians choose to use the reports it produces. (aidyhq.com; apps.apple.com)