Calories are the least interesting thing about your food.
TUNA tracks 100+ nutrients — how they interact, how they absorb, and how your needs shift with sleep, training, stress, and hormones. Log a meal in seconds. Understand it for the first time.
Free to start · No credit card · Founder price: everything for $4.99/mo, locked in forever
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7 nutrient absorption mistakes you're probably making — each one backed by a cited study.
Two meals. Same calories.
Completely different biology.
What you absorb matters more than what you eat — and absorption depends on what's on the plate together.
Vitamin C unlocks iron
Add vitamin C to a meal and you can absorb 2–3× more iron from the same food. TUNA sees the pairing and scores it.
Hallberg et al., 1989Coffee blocks it
A cup of coffee with that same meal can cut iron absorption by 39–64%. TUNA flags the conflict — and when to time your cup.
Morck et al., 1983Phytates bind minerals
Compounds in grains and legumes latch onto zinc and iron before your body can use them. TUNA accounts for it, meal by meal.
Hurrell & Egli, 2010Calorie apps can't see any of this. TUNA is built on it.
A nutrient intelligence system, tuned to you
Most apps count. TUNA understands — iron bioavailability, omega balance, nutrient synergies and blockers — and adapts to your physiology, habits, and goals.
- Optimize the nutrients behind energy, mood, recovery, and focus
- See interactions: what boosts absorption, what blocks it
- Track inflammation inputs like your omega-6:3 ratio
- Watch sleep, fasting, and workouts shift your nutrient demands
- Support fertility, pregnancy, postpartum, or menopause
- Eat for performance, longevity, and whole-body resilience
For people who want to understand why — not just how much.
Recommendations aren't static. TUNA finds the pattern and builds a protocol that's yours.
Log a meal in seconds — your way
Food logging shouldn't feel like work. Snap it, say it, or search it.
Snap a photo
TUNA's AI identifies the foods, estimates portions, and breaks down every nutrient.
Just describe it
Type "grilled salmon with broccoli and lemon butter" — TUNA builds the whole meal.
Precision search
A deep nutrition database with smart indexing for foods, brands, supplements, and recipes.
Every meal, scored and explained
Every nutrient has a role. Every choice affects absorption, synergy, or metabolic demand. TUNA shows how each meal works for — or against — your goals.
- Iron, zinc, and magnesium bioavailability
- Omega-6:3 inflammation balance
- Meal timing, glycogen replenishment, and fasting
- Supplements, protein powders, and amino acids
- Electrolytes, sweat loss, and hydration
- Choline, DHA, glycine, and other performance-critical nutrients
- Fiber types and microbiome effects
Scientific scoring with RDAs adjusted to your actual needs — not a population average.
Built for real life — every season of it
Your nutrient needs aren't static. TUNA adjusts your targets around the things that actually change them:
Whatever season you're in, TUNA meets you there — intelligently.
Tune your nutrition to your bloodwork
Your biomarkers tell the real story. Upload your labs and TUNA turns them into daily nutrient priorities — not what an average says you should need.
- Upload metabolic, lipid, iron, hormone, or comprehensive panels
- Out-of-range biomarkers become daily limits and targets
- See exactly which foods to add or limit — backed by your labs
- Watch your plan update automatically as new panels come in
Stop guessing. Eat for the biology you actually have.
For athletes, biohackers, and longevity seekers
Endurance, lifting, longevity, or just better energy — TUNA gives you clarity grounded in physiology, not trends. See how your meals influence:
Complex data, turned into patterns you can act on.
Stats, streaks, and achievements
Daily nutrient scores. Strength, vitality, endurance, and resilience metrics. Iron mastery, omega balance, recovery streaks — progress that's actually fun to keep.
A community that eats like you think
Share meals and recipes, save a friend's meal straight into your log, and post auto-generated nutrient cards. Social nutrition that's positive and science-based.
Calorie counters stop where TUNA starts
| Typical calorie apps |  TUNA |
|
|---|---|---|
| Calories & macros | ✓ | ✓ |
| 100+ micronutrients tracked | a handful | ✓ |
| Absorption & nutrient interactions | — | ✓ |
| Targets that adapt to sleep, training & hormones | — | ✓ |
| Bloodwork-driven nutrient priorities | — | ✓ |
| Explains the why, grounded in research | — | ✓ |
Free to start. Founder pricing while it lasts.
No trial timer, no credit card, no catch. And right now, during early access, every feature is unlocked for every tier — some will move to premium later, so it's the perfect time to try it all.
Basic
Everything you need to start understanding your food.
- AI camera meal logging (first 20 meals free)
- 100+ essential nutrients tracked
- Advanced nutrient interactions
- Week-by-week pregnancy guidance
- Fasting & meal-timing optimization
- Custom nutrient profiles & recommendations
Athlete
Early-adopter rate locked in for as long as you stay — plus an exclusive in-app founder badge.
- Everything in Basic
- Unlimited meal logging
- Daily AI insights
- Bulk health-data sync
- Founder badge & Feed recognition
- Avatar regeneration
- Weekly reports (in development)
- DNA-based recommendations (in development)
- Personal AI nutrition consultant (in development)
Loyalist
Everything in Athlete at 20% off the founder rate — your lowest price, locked in.
- Everything in Athlete
- 20% loyalty discount, locked in
- Founder badge included
Cancel anytime. Basic stays free forever — upgrading is how you support TUNA's development.
Everything else you're wondering
Is TUNA really free?
Yes. TUNA Basic is free forever, and your first 20 meals are free to log — AI camera logging, 100+ nutrients, interactions, and personalized recommendations, with no credit card and no trial countdown. After your first 20 meals, upgrading unlocks unlimited logging; everything else in Basic stays free. And right now, during early access, every feature is unlocked for everyone — some will move to premium plans later.
How is TUNA different from a calorie counter?
Calorie apps tell you how much you ate. TUNA tells you what your body can actually do with it — tracking 100+ nutrients, absorption boosters and blockers, inflammation balance, and targets that adapt to your sleep, training, hormones, and bloodwork.
How fast is logging, honestly?
Seconds. Snap a photo and the AI identifies foods and portions, type a plain-English description like "grilled salmon with broccoli," use precision search, or save a meal a friend shared with one tap.
What does uploading bloodwork do?
TUNA reads your panels, flags out-of-range biomarkers, and converts them into daily nutrient targets and limits. Upload a new panel later and your plan updates automatically.
What's the founder price about?
Early adopters get the full Athlete plan for $4.99/mo (or $47.99/yr), locked in for as long as they stay subscribed, plus an exclusive in-app founder badge. The price for new members rises to $9.99/mo later.
Which platforms are supported?
TUNA is available today on iOS via the App Store and Android via Google Play.
Is TUNA medical advice?
No — TUNA is an educational and tracking tool, not a substitute for professional medical advice. See our medical disclaimer.
Ready for a TUN-up?
Download TUNA free and see what your meals have been hiding. Your first logged meal takes about thirty seconds.
Free to start · No credit card · Founder pricing for early adopters