Find Out What's Causing Your Reactions
Track symptoms. Log meals. Let our algorithm find the patterns you can't see. NutraSafe correlates your reactions with ingredients across days of eating to identify your personal trigger foods.
Start Tracking FreeSound Familiar?
"I know something's causing it..."
You get bloated, tired, or headaches after eating, but you can't work out what's triggering it. There are too many variables.
"The GP just said keep a food diary"
But writing things down on paper doesn't help you see patterns. You need something that can analyse the data.
"I've tried cutting things out..."
Random elimination doesn't work. You need systematic tracking to identify what's actually causing problems.
"It's not just one food"
Sometimes it's fine, sometimes it's not. The trigger might be an ingredient that appears in multiple foods, not the food itself.
How NutraSafe Finds Your Triggers
Log Your Meals
Scan barcodes, search our UK food database, or add takeaways and home-cooked meals. Every ingredient is recorded - even AI-estimated ingredients for foods without labels.
Record When You React
When you experience a symptom, log it immediately. Select from 12 reaction types (bloating, headache, fatigue, etc.), rate the severity, and note when it started.
The Algorithm Analyses Everything
Our weighted correlation algorithm scores every food and ingredient based on how recently and frequently they appeared before your reaction, plus whether they show up in multiple reactions.
Patterns Emerge
After 3-5 reactions, you'll start seeing which ingredients consistently appear before your symptoms. The algorithm identifies triggers you'd never spot yourself - like a specific emulsifier appearing across different foods.
The Science Behind Pattern Detection
Our algorithm doesn't just count food frequency. It uses weighted scoring across multiple factors to identify genuine triggers vs coincidences.
Recency Weighting
Foods eaten within 24 hours of a reaction get 70% weight. 24-48 hours gets 20%. 48-72 hours gets 10%. Because most food reactions happen within a day.
Cross-Reaction Analysis
If the same ingredient appears before multiple different reactions, it gets boosted. This catches triggers that cause various symptoms - like sulphites causing both headaches AND skin issues.
Confidence Weighting
Exact ingredients from scanned products get full weight. AI-estimated ingredients from takeaways get reduced weight. So your results prioritise confirmed data.
Symptom Correlation
Ingredients that appear before the same symptom type multiple times get +25% boost. If sulphites show up before 3 headaches, they're flagged as a potential headache trigger.
Symptoms You Can Track
12 pre-defined reaction types plus custom symptoms. Track severity (mild, moderate, severe) and exact timing.
Common Trigger Categories We Help Identify
The app automatically recognises 14 major allergen categories plus hundreds of additives and E-numbers. Here's what users commonly discover:
🧪 Food Additives
- MSG (E621) - headaches, flushing
- Sulphites (E220-E228) - breathing, skin
- Benzoates (E210-E219) - hyperactivity
- Azo dyes (E102, E110, etc.) - behaviour
- Aspartame (E951) - headaches
🥛 Dairy & Lactose
- Milk proteins (casein, whey)
- Lactose (milk sugar)
- Hidden dairy in processed foods
- Cream, butter, cheese derivatives
🌾 Gluten & Wheat
- Wheat flour and derivatives
- Barley malt
- Rye and spelt
- Hidden gluten in sauces/seasonings
🍷 Histamine & Amines
- Aged cheeses
- Fermented foods
- Processed meats
- Wine and beer
- Certain fish
🫘 FODMAPs
- Onions and garlic
- Wheat (fructans)
- Certain fruits
- Beans and lentils
- Artificial sweeteners
☕ Stimulants & Others
- Caffeine
- Tyramine
- Nitrates/Nitrites
- Salicylates
Who Uses NutraSafe Reaction Tracking?
🔬 Self-Diagnosis Support
Build objective data before seeing a GP or dietitian. Generate PDF reports showing your symptom patterns and suspected triggers. Much more useful than "I think it might be dairy".
🧪 Elimination Diet Tracking
Following a low-FODMAP, gluten-free, or exclusion diet? Track your progress, monitor "clean" days, and systematically reintroduce foods while watching for reactions.
Learn about FODMAP tracking →🩺 Chronic Condition Management
IBS, migraines, eczema, and other conditions often have food triggers. Build a picture of YOUR personal triggers - everyone's different.
IBS food diary →👶 Children's Reactions
Kids can't always articulate what they're feeling. Parents use NutraSafe to track behavioural changes, skin reactions, and digestive issues against what their children eat.
🏃 Performance Optimisation
Athletes and fitness enthusiasts track how foods affect their energy, recovery, and gut comfort during training. Find what fuels you best.
🧠 Mental Health & Food
Emerging research links gut health to mood. Track brain fog, anxiety, and energy levels against your diet to see if there are patterns.
Your Body Already Knows. Let's Find Out Together.
Start logging today. Most users see their first patterns emerge within 2-4 weeks. It's free to download and the reaction tracking features don't require a subscription.
Download NutraSafe FreeFrequently Asked Questions
How does the food reaction tracker identify trigger foods?
NutraSafe uses a weighted correlation algorithm that analyses everything you've eaten in the 3-7 days before a reaction. It scores foods and ingredients based on recency (how recently you ate them), frequency (how often they appear before reactions), and cross-reaction patterns (whether the same ingredient appears in multiple reactions). Over time, it builds a picture of your personal trigger foods.
What symptoms can I track?
You can track 12 common reaction types including bloating, headaches, fatigue, nausea, stomach pain, diarrhoea, constipation, skin rashes, joint pain, brain fog, anxiety, and insomnia. You can also add custom symptoms and track severity (mild, moderate, severe) for each reaction.
How long does it take to identify food intolerances?
Most users start seeing patterns emerge after logging 3-5 reactions. The algorithm becomes more accurate with more data. If you consistently log your meals and reactions, you'll typically have actionable insights within 2-4 weeks.
Can I share my data with my doctor or dietitian?
Yes. NutraSafe can generate PDF reports of your reaction history, including suspected trigger foods, symptom patterns, and ingredient correlations. This gives healthcare professionals objective data to work with.
Does it work for takeaways and restaurant meals?
Yes. For foods without ingredient labels, NutraSafe uses AI to estimate likely ingredients. These estimated ingredients are given lower confidence weights in the analysis, so exact ingredients from scanned products are prioritised, but takeaway meals are still factored in.
Is this a medical diagnosis tool?
No. NutraSafe is a tracking and pattern-detection tool to help you identify potential food sensitivities. It does not diagnose medical conditions. If you suspect a food allergy (which can be life-threatening), please see a healthcare professional for proper testing.
Always check the label. NutraSafe helps you spot potential triggers and track reactions — but ingredients change and cross-contamination varies by batch. The packaging is your source of truth.