Everything you want to know about BiteSense.

BiteSense is a food sensitivity and symptom tracking app for iPhone. It helps you log meals and symptoms, run elimination diets, and discover patterns in your own data — so you can start to understand which foods may be contributing to your reactions.

Everything BiteSense shows you is based on your own logged history. It does not make recommendations or diagnoses. It is an investigation tool — built to help you bring better, more organised data to your own health journey and to your doctor. Learn more on our About page.

BiteSense is built for anyone whose symptoms are linked to food — whether you have a formal diagnosis or are still trying to find answers.

It is used by people managing eosinophilic esophagitis (EoE), irritable bowel syndrome (IBS), Celiac disease, GERD, Crohn’s disease, ulcerative colitis, lactose intolerance, SIBO, gastroparesis, gastritis, food allergies, and general food sensitivities. It is also used by people who simply want to understand why certain meals make them feel unwell.

BiteSense was built by its founder — who has EoE — because no existing tool was designed specifically for this kind of investigation. You can read more on our About page.

BiteSense is free to download. Core logging features — including meal and symptom logging — are available at no cost.

Premium features including Trigger Finder, Friendly Foods, Patterns Found, Elimination Diet Tracking, Reintroduction Tracking, Symptom Timing, and the Health Summary Report require a BiteSense Premium subscription. Premium is available as a monthly or yearly auto-renewable subscription. A free trial may be available when you sign up. See the App page for a full breakdown of what is included in each tier.

BiteSense is currently available on iPhone only. An Android version is planned for the future. There is no confirmed release date at this time.

No. BiteSense does not diagnose anything. It is a wellness tracking tool — not a medical device.

Everything BiteSense shows you is an observation drawn from your own logged data. It identifies patterns. It does not tell you what those patterns mean medically, and it does not tell you what to eat or avoid. For any diagnosis or medical guidance, always consult your doctor or specialist.

There are two ways to log in BiteSense. The first is Tell BiteSense — you describe what you ate and how you felt in plain language, either by typing or speaking. BiteSense extracts your meals, symptoms, and timing automatically, then shows you everything to confirm before saving.

The second is the traditional log form — you add foods one by one, set the time, and link symptoms directly to a specific meal. Both methods feed into the same analysis. The method you use does not affect the quality of your insights.

Tell BiteSense is the natural language logging feature. Instead of filling out a form, you describe what happened in your own words — for example, “I had pasta with tomato sauce for dinner last night and woke up with heartburn this morning.”

BiteSense processes that description and extracts the meals, foods, symptoms, and timing. You review what it found and confirm before anything is saved. Tell BiteSense is available to all users for a limited number of uses, after which a Premium subscription is required.

The Trigger Finder uses a weighted algorithm to analyse your logged meals and symptoms over time. It looks at which foods and food groups appear most consistently before your symptoms — factoring in timing, severity, the reaction window, and your condition.

It is not a simple count of how many times you ate something. It is a weighted calculation that treats a severe reaction four hours after a meal differently from a mild reaction twelve hours later. The results are ranked by pattern strength from your own data. The more consistently you log, the more accurate the results become.

All results are observational. The Trigger Finder shows you patterns — it does not tell you what to do with them.

Trigger Finder shows foods and food groups that appear most consistently before your symptoms. Friendly Foods shows foods you have consistently tolerated well — meaning they appear frequently in your log without symptoms following.

Both are observational patterns from your own data. Neither is a recommendation. Friendly Foods does not mean a food is safe — it means that, based on your history, it has not been consistently associated with reactions. Knowing what you tolerate well is just as useful as knowing what you do not.

The reaction window is the time period BiteSense uses when linking meals to symptoms. If a symptom is logged within that window after a meal, the meal is considered potentially associated with that symptom.

Different conditions and different people have different typical reaction times. Some people react within an hour. Others react many hours later. The reaction window lets you adjust this to match your own patterns. You can change it in the Insights settings. This is a Premium feature.

You choose a food to eliminate and BiteSense starts tracking your symptom frequency from that point. Before and after data appears from day one — you do not have to wait until the end to see whether anything is changing.

Each elimination is tracked independently with its own progress ring and before versus after comparison. You can run multiple eliminations at the same time. This is a Premium feature, found in the Explore screen.

After completing an elimination diet, you can bring the food back and track what happens. BiteSense compares your symptom frequency during reintroduction to your baseline from the elimination period.

This is where the clearest read on a food comes from. If symptoms return when the food returns, that is meaningful data. If they do not, that is also meaningful. Reintroduction tracking closes the loop on each elimination. This is a Premium feature.

Go to the Report screen in the app. Your health summary shows your logged totals, most common symptoms, longest symptom-free streak, and most logged foods. Tap Export PDF to generate a report formatted to share with your doctor.

You can adjust the lookback period — 30, 60, or 90 days — before exporting. The Health Summary Report is a Premium feature.

Insights start appearing after a small number of meals — around five is enough to begin seeing initial patterns. However, the more consistently you log, the more meaningful and accurate your insights become.

BiteSense is designed to improve over time. A few weeks of consistent logging will produce significantly stronger patterns than a few days. The algorithm works with whatever data you give it — but it rewards regular use.

Eosinophilic esophagitis (EoE) is often managed through elimination diets — removing suspected foods to see whether symptoms improve. The challenge is that reactions in EoE are frequently delayed, making it difficult to connect a specific food to a specific reaction.

BiteSense was built specifically with this problem in mind. Its founder has EoE. The app logs meals, symptoms, and the time between them — then looks for patterns across the full history. The elimination diet and reintroduction tracking features are designed to support the trial-and-error process that EoE management often requires.

BiteSense does not diagnose EoE or tell you which foods to eliminate. It gives you organised data to support your own investigation and to share with your gastroenterologist.

Irritable bowel syndrome (IBS) symptoms are frequently triggered by specific foods — but identifying which foods is difficult because reactions vary between people and are often delayed.

BiteSense helps by tracking meals and symptoms over time and surfacing which foods and food groups appear most consistently before reactions. The elimination diet feature lets you test suspected foods and see whether removing them makes a difference. Everything is based on your own data — the app observes patterns, it does not prescribe a diet.

BiteSense supports anyone whose symptoms are connected to food — regardless of their specific condition. The core value is the same across conditions: log what you eat and how you feel, and let BiteSense find the patterns.

The algorithm adjusts based on your condition to give appropriate weight to the timing and severity of your reactions. The result is insight that is relevant to your specific situation — not a generic output. BiteSense supports Celiac disease, GERD, Crohn’s disease, ulcerative colitis, lactose intolerance, SIBO, gastroparesis, gastritis, food allergies, and general food sensitivities.

Many food-related conditions involve an immune response that takes time to develop. A reaction may appear hours after a meal — not immediately. This makes it very difficult to connect a symptom to the meal that caused it, especially from memory alone.

BiteSense accounts for this through the reaction window setting. You set the window to match how quickly you typically react, and the algorithm uses that window when linking meals to symptoms. This is one of the core reasons why a tracking app is more effective than memory for identifying food triggers.

Consistent tracking is one of the most effective tools for identifying food triggers — particularly for conditions with delayed reactions. The more data you have, the more clearly patterns emerge.

Doctors regularly ask patients to keep food and symptom diaries for exactly this reason. BiteSense is a more structured and analytical version of that process. It does not replace your doctor — but it can give both you and your doctor better information to work with.

An elimination diet involves removing a suspected trigger food from your diet for a set period — typically two to six weeks — to see whether your symptoms improve. If they do, you reintroduce the food to confirm whether it was the cause.

BiteSense supports this process through the Explore screen. You start an elimination, and BiteSense tracks your symptom frequency before and during the elimination in real time. When you are ready, you start a reintroduction phase and BiteSense tracks that too. The result is a clear, data-backed picture of whether that food is contributing to your symptoms.

Always consult your doctor before starting an elimination diet, particularly for conditions like EoE or Celiac disease.

Yes. Your health data is stored securely and is never sold. BiteSense uses industry-standard encryption and only shares data with trusted service providers as described in the Privacy Policy.

The Tell BiteSense feature sends your text description to OpenAI’s API for processing. No personal identifiers are included. You are asked for explicit consent before any data is shared with third-party services. You can review the full Privacy Policy for details.

Yes, in two ways. First, the Tell BiteSense logging feature uses OpenAI to extract meals, symptoms, and timing from your natural language description. Second, every food you log is passed through a classification system that identifies which food traits it contains — for example, whether it contains gluten, dairy, or red meat. This is what allows the analysis to go beyond dish names to the ingredient level.

The pattern detection and insights themselves are calculated by BiteSense’s own weighted algorithm — not by a language model. Your consent is obtained before any data is sent to OpenAI.

Yes. You can delete your account and all associated data at any time from within the app. Deletion is permanent and cannot be undone.