Hidden-source decoder
Soy sauce (wheat), seitan (pure gluten), malt vinegar, beer, modified food starch - all flagged.
- EU 'may contain gluten' parser
- Oats labelled (some are gluten-contaminated)
- Restaurant pitfall list
Gluten-free living
Catch hidden gluten before it catches you.
Gluten hides in soy sauce, oats, malt vinegar and shared kitchens. A Gut Day reads EU labels, flags 'may contain' warnings and tracks your symptom timeline after exposures.
Coeliac, NCGS or wheat allergy - the app supports all three
Coeliac disease is autoimmune and reacts to even tiny gluten amounts (20 ppm). Non-coeliac gluten sensitivity (NCGS) is dose-dependent and fluctuates. Wheat allergy is an immune reaction to wheat proteins, not gluten. A Gut Day lets you tag which condition you have so warnings, thresholds and the FODMAP-vs-gluten distinction make sense for your case.
Built for serious gluten-avoidance
EU-label gluten scanner
Reads barley, rye, spelt, kamut, malt and 25+ derivatives. Flags 'may contain' lines.
Cross-contamination log
Track accidental exposures (shared toaster, restaurant fryer). See if symptoms still appear days later.
Coeliac symptom timeline
Coeliac symptoms can appear 6 to 48 hours later. The insights engine respects this delay.
How A Gut Day helps
Built for this exact problem
Exposure log
When you suspect cross-contamination, tap one button. The app starts a 72-hour symptom watch.
- 72h post-exposure tracking
- Severity rating
- Pattern detection across exposures
Long-window insights
Coeliac inflammation persists for days. Insights look at 24 to 72 hour windows, not just 4-hour gastrocolic windows.
- Multi-day windows
- Cumulative exposure score
- Recovery timeline
Travel mode
Save 'safe restaurants' with notes per city. Photograph menus for AI suspect-flagging.
- City-tagged restaurant list
- Menu OCR
- Quick translation of allergen lines
How A Gut Day fits gluten-free life
- 1
Tag your condition
Coeliac, NCGS or wheat allergy. The app calibrates accordingly.
- 2
Scan everything for two weeks
Build your safe-product list. Discover which 'gluten-free' brands actually agree with you.
- 3
Log every suspected exposure
Even if you are not sure. Pattern recognition needs the data.
- 4
Review monthly
See your exposure rate, recovery time and which restaurants or products keep slipping through.
Why 'gluten-free' oats might still cause symptoms
Even certified gluten-free oats contain avenin, a protein structurally similar to gluten. About 1 in 10 coeliac patients react to pure oats.
If you are part of that 10%, the only way to know is to log oats specifically and watch for symptoms. The app supports this with a dedicated oat-tag.
Cross-contamination is invisible until you track it
Shared toasters, fryer oil, wooden cutting boards and even the same butter knife in jam can deliver enough gluten to trigger coeliac inflammation. These exposures rarely come with an obvious culprit.
Logging every meal in detail (where, with what utensils, who prepared it) makes invisible cross-contamination visible after a few weeks of data.
Frequently asked questions
- Is the app aimed at coeliac patients or just gluten-avoiders?
- Both. Tag your condition at setup and the thresholds, time-windows and warnings adapt.
- Can it scan non-EU labels?
- EU labels work best because allergen disclosure is regulated. For other regions, manual entry is supported.
- Does it know about gluten in medication?
- It carries a known-medication list and lets you tag your own prescriptions.
- What is the difference with low-FODMAP?
- Wheat is high in fructans (a FODMAP), so low-FODMAP eaters often cut wheat. But gluten itself is not a FODMAP. The app keeps the two systems separate.
- Will it help me get diagnosed?
- It cannot diagnose. But the symptom timeline you produce is genuinely useful evidence to bring to a gastroenterologist.
Take the guesswork out of gluten-free
Free EU-label scanner, exposure log and coeliac-aware insights.
Create your free account