
Rio: Food Intolerance App
Histamine, FODMAP & More
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Free
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About
Find the foods that work for your body, in one list matched to everything you react to.
Seven main triggers across 500+ whole foods, with levels based on published research: Histamine, FODMAPs, Lactose, Gluten, Salicylates, Oxalates and Sulfur.
HOW IT WORKS
• Set your triggers and decide how strict to be with each one: avoid, limit, watch or eat freely.
• Know which chemicals are in whole foods and which of them work for you.
• See iron, magnesium and 20+ nutrients in the foods you tolerate.
• Match any food to how your body really reacts.
• Look back on how your food list changed each month.
Free to download and use.
Rio is a lifestyle and educational app, not a medical device. It doesn't diagnose, treat, cure, or prevent any illness, and it's never a substitute for professional medical advice. If you suspect a food intolerance or plan major changes to your diet, talk to a qualified healthcare professional first.
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What's New in Rio
1.0.4
September 10, 2026
Bug fixes and overall improvements.






