Something keeps triggering your symptoms.
Let's figure out what it might be.
A rash after dinner. An upset stomach that keeps coming back. A reaction after trying a new skincare product. Allergy Detective helps you collect the clues, connect patterns across your daily life, and identify possible triggers worth investigating.
Free forever - No credit card required
Designed to help you organize evidence and identify possible patterns - not diagnose allergies.
When it happens again, the hardest part is not knowing why.
Mystery Rash
A rash appears unexpectedly. Was it food? Soap? Detergent? Pollen? Something else?
After-Meal Question
Your stomach feels wrong after eating - but was it today's meal or something you've been eating repeatedly?
New Product
New lotion. New shampoo. New detergent. Then symptoms appear. Coincidence or pattern?
Recurring Reaction
The symptom disappears. Weeks later, it returns. And you're trying to remember what was different last time.
Stop starting from memory every time symptoms return.
You log the clues.
Allergy Detective connects the dots.
What You Record
- Symptoms
- Foods
- Products
- Environment
- Activities
- Medications
- Stress
- Weather
- Pollen
- Humidity
- Photos
Allergy Detective
- Analyzes timing
- Looks for repetition
- Compares symptom days
- Considers symptom-free days
- Looks for contradictory evidence
- Monitors changes over time
What You Get
- Potential triggers
- Evidence
- Pattern strength
- What contradicts the pattern
- Things worth watching
- Questions worth discussing with your doctor
Allergy Detective identifies patterns - it does not prove causation.
From "I have no idea" to a clearer picture.
Log the clues
Record symptoms and what's happening around them. Food. Products. Environment. Activities. Medications. Photos. When something happens, log it — the more clues you collect, the clearer the picture becomes.
Build the evidence
Allergy Detective organizes your history over time. No more trying to reconstruct everything from memory.
Run your investigation
Once enough evidence exists, Allergy Detective looks for recurring relationships and possible triggers.
Keep investigating
Patterns can strengthen, weaken, or remain inconclusive as new evidence arrives. That's why Allergy Detective keeps looking.
Don't just get a guess.
See the evidence.
Allergy Detective connects patterns across your logs and shows you the evidence — both supporting and contradictory — so you can see why something was flagged instead of receiving a mysterious AI answer.
Supporting evidence
See exactly what observations led to a potential trigger being flagged.
Contradictory evidence
Real investigations aren't always neat. See evidence that doesn't fit the pattern, too.
Confidence bands
Understandable labels — not medical probabilities — that tell you how strong a pattern is.
Example investigation using demonstration data.
Why contradictory evidence matters.
Real investigations aren't always neat. Allergy Detective shows you evidence that supports a possible pattern AND evidence that doesn't — so you can see why something was flagged instead of receiving a mysterious AI answer.
Start collecting clues for free.
Use Allergy Detective free for as long as you want. Once you've built enough history, we'll unlock your first Detective Investigation.
We'll reveal your strongest 1-2 credible potential triggers, if the evidence supports them.
If the evidence doesn't support a credible trigger, we'll tell you that too.
No credit card required.
Because the trigger might not be on your plate.
Food gets blamed first. But recurring symptoms can happen around many parts of everyday life. Allergy Detective lets you investigate the bigger picture.
Your investigation doesn't stop after the first answer.
As you continue logging, Continuous Detective evaluates new evidence and watches for meaningful changes.
Pattern Strengthened
More evidence supports something already being watched.
Pattern Weakened
New evidence doesn't fit the previous pattern.
New Pattern Found
A repeated relationship appears that wasn't previously on your radar.
Inconclusive
The evidence remains mixed.
Example monitoring screen using demonstration data.
No manufactured discoveries. If nothing meaningful changes, Allergy Detective stays quiet.
Keep an eye on the things you're wondering about.
Users can add potential triggers to their Watch List. Allergy Detective continues comparing new evidence.
Watch List
A suspicion isn't a diagnosis. Your Watch List simply helps you keep track of what deserves closer attention.
Turn a suspicion into a structured observation.
Detective Experiments help you track what happens during an observational avoidance period instead of relying on memory.
Allergy Detective does not recommend deliberately re-exposing yourself to substances that could cause a serious reaction. Potentially dangerous food, medication, or severe-reaction challenges require professional medical guidance.
Experiment Flow
Possible Results
Worth Watching
Related to: Banana, Avocado, Kiwi
Related to: Apple, Cherry, Carrot
One clue can sometimes point toward another.
When relevant, Allergy Detective can highlight related substances that may be worth watching.
Related does not mean allergic. These insights are meant to help you know what may be worth monitoring or discussing with a healthcare professional.
See what your own history shows.
When medications are logged, Allergy Detective can organize observations about timing and symptom changes alongside the rest of your evidence.
Medication Response Insights are observational only. Allergy Detective does not tell you to start, stop, change, or adjust medication.
Walk into your next appointment with more than,
"It happens sometimes."
Turn weeks or months of scattered observations into an organized Doctor Case File you can bring to your healthcare professional.
Inside your Doctor Case File
What it can include
Your doctor gets context. You get a better way to explain what's been happening.
This report organizes your recorded data and summarizes observed patterns. It is not a medical diagnosis.
When it's your child, "I don't know" feels even harder.
Keep each family member's investigation separate, organized, and easy to follow. Allergy Detective Pro supports up to 5 profiles, with each person's symptoms, clues, patterns, photos, experiments, and reports kept separate.
Up to 5 profiles with Pro. Each profile remains separate — health data is never shared between profiles.
Health questions deserve more than a black-box answer.
Show the Evidence
See why a potential trigger was flagged.
Show What Doesn't Fit
Contradictory evidence matters too.
Admit When We Don't Know
If there isn't enough evidence, Allergy Detective says so.
Your health information deserves protection.
- Profile-specific health data
- Private health photos
- Secure account access
- Reports generated for the selected profile
- Sensitive health details are not sent into generic product analytics
Start free. Upgrade when you want the investigation to go deeper.
Free
Forever
- Unlimited symptom logging
- Food logging
- Product logging
- Environment logging
- Activity logging
- Medication logging
- Timeline & dashboard
- Basic trends
- 30-day visible history
- One Free Detective Investigation
- Top 1-2 credible potential triggers, when evidence supports them
- 1 profile
Free Detective Investigation available after 7 days, 5 relevant entries, and 2 symptom events.
No credit card required
Pro
Billed $39.99 annually
SAVE 33%
- Unlimited Detective Investigations
- Full potential-trigger rankings
- Supporting + contradictory evidence
- Continuous Detective
- Watch List monitoring
- Cross-reactivity intelligence
- Detective Experiments
- Medication Response Insights
- Advanced trends
- Doctor Case File
- CSV + JSON exports
- Unlimited history
- Up to 5 family profiles
- Priority support
Also available: $4.99/month
Monthly and annual unlock the same Pro features.
Built to help you investigate — not replace medical care.
Allergy Detective identifies patterns in information users record. It does not diagnose allergies. It does not prescribe medication. It does not recommend dangerous self-challenge.
For potentially serious reactions, the app includes emergency-safety protections to help you seek immediate medical attention when needed.
Frequently Asked Questions
The next time it happens,
don't start from scratch.
Start building the history that can help turn scattered symptoms into a clearer picture.
Free forever - No credit card required
Your symptoms are clues.
Start collecting them.