Take Control of Your Gut Health.
Most people blame food for digestive issues without real evidence. You eat something, feel bloated, and guess: was it the bread? The broccoli? The stress from work? ReactLog correlates everything you eat, drink, and do with your digestive symptoms—revealing exactly which foods and habits trigger bloating, gas, pain, and other issues for you specifically.
Your Gut Problems Have Invisible Triggers
Between 10-15% of adults experience IBS symptoms. Millions more deal with bloating, gas, cramping, and digestive issues they can't explain. The frustrating part? You can't connect the dots. You eat lunch on Monday and feel bloated Tuesday. You eat the same thing Wednesday and feel fine. Why?
The reality is that your gut is complicated. Food isn't the only trigger—stress, sleep, exercise, timing, portion size, what you ate yesterday, even your menstrual cycle if applicable can all influence your digestion. When you try to guess which factor caused your symptoms, you're almost always wrong. So you eliminate foods that aren't actually problems, or you keep eating foods that are making you sick.
You've probably tried food elimination diets and seen mixed results. You cut out gluten, nothing changed. You tried low-FODMAP, felt worse. You added probiotics, had no idea if they helped. Without data, every dietary change is just another guess.
The solution is systematic tracking. Log everything—food, meals, symptoms, stress level, sleep, exercise, timing. After 2-3 weeks of consistent data, patterns emerge that your brain alone could never spot. You discover: 'I get bloated on days with high stress, regardless of what I eat' or 'Bread triggers symptoms, but only when I eat it with butter' or 'Fiber helps, but only if I introduce it gradually.' You find your actual triggers, not guesses.
How It Works in 3 Steps
Transform digestive guessing into evidence-based decisions about your health.
Log Your Food & Life
Each day, record what you ate, when you ate it, and how much. Log your stress level, sleep hours, exercise, and any other factors affecting your health. It takes 2-3 minutes. ReactLog tracks meals, ingredients, timing, and custom factors unique to your situation.
Rate Your Symptoms
Throughout the day, rate your digestive symptoms—bloating severity, gas, cramping, bowel movement quality, energy, mood, and anything else you're tracking. Use quick sliders and scales. Be honest about your experience. The more detail, the better the patterns.
Discover Your Triggers
After 2-3 weeks of consistent logging, ReactLog's analytics reveal patterns: 'Bloating is 35% worse when you eat bread' or 'Gas decreases on high-exercise days.' You see exactly which foods and habits correspond with your worst symptoms and your best days.
Track Everything That Affects Your Gut
ReactLog lets you track any digestive factors that matter to you:
Foods & Meals
Every meal, ingredient, portion size, and eating time with detailed nutritional info
Bloating & Gas
Rate severity throughout the day and note timing and intensity
Bowel Movements
Frequency, consistency, urgency, and comfort ratings
Pain & Cramping
Track abdominal pain location, severity, type, and duration
Stress & Sleep
Stress levels, sleep hours, sleep quality, and mood ratings
Hydration & Exercise
Water intake, workout type, intensity, duration, and activity level
Supplements & Medications
Probiotics, digestive enzymes, medications, and other interventions
Custom Symptoms
Add unlimited custom metrics for your unique health situation
Your Digestive Data Stays Completely Private
Why privacy is essential for gut health tracking.
Your digestive health reveals deeply personal things: food sensitivities, embarrassing symptoms, medical conditions, eating patterns, vulnerabilities. You absolutely do not want this data on someone else's server.
Most health apps sell your data to advertisers, insurance companies, data brokers, or pharmaceutical companies. Some claim they won't, but that's how they've monetized your health information. ReactLog takes a completely different approach:
- No backend servers — All your data lives on your phone only. We have nowhere to send it.
- No analytics or tracking SDKs — We don't monitor how you use the app or what you're tracking.
- No data collection — We have no servers, so there's nothing to collect. No data pipeline exists.
- No account required — You don't create a login, give us an email, or identify yourself in any way.
- Face ID/Touch ID security — Your digestive data is biometrically protected on your device.
We charge for the app instead of charging you with your privacy. You pay once or subscribe, and we make money. We never profit from your health data. Our business model means our interests are aligned with yours.
Frequently Asked Questions
How do I identify my food triggers?
Log what you eat and rate your digestive symptoms throughout the day—bloating, gas, pain, bowel movements, energy, mood. After 2-3 weeks of consistent tracking, ReactLog's analytics reveal correlations. For example: 'Your bloating is 40% worse after eating bread' or 'Gas decreases on high-fiber days.' You'll see exactly which foods correspond with your symptoms.
Can I track IBS and other digestive conditions?
Yes. ReactLog is designed for anyone managing digestive health—IBS, SIBO, Crohn's disease, ulcerative colitis, food sensitivities, celiac disease, or general bloating and gas. You can track symptoms like cramping, diarrhea, constipation, bloating, gas, urgency, and pain alongside meals, stress, sleep, and exercise to find your personal patterns.
What digestive symptoms can I track?
Any symptom. Bloating severity, gas frequency and type, abdominal pain, cramping, bowel movement consistency, urgency, constipation, diarrhea, nausea, heartburn, energy level, and mood. You can rate each symptom on a scale and add custom notes about when symptoms occur and how intense they are.
Is my gut health data private?
Completely private. ReactLog has no backend servers and zero data collection. Your food logs, symptom entries, meal timing, stress ratings, and all your digestive data never leave your iPhone. We use on-device processing only. You can lock the app with Face ID or Touch ID for additional security. Your gut health information belongs to you alone.
How long until I see patterns?
Most users start seeing meaningful patterns after 2-3 weeks of consistent daily tracking. Some food triggers become obvious in just 1-2 weeks, while other patterns take 4-6 weeks to confirm. Consistency is more important than duration. The more days you log, the clearer and more reliable your patterns become.
Start tracking today.
Free during Early Access. No account required. Your gut health data stays on your phone.