How does Kairo track calories?

Kairo uses advanced AI to analyze photos of your food and automatically calculate calories and macronutrients. Simply take a photo of your meal, and Kairo does the rest.

Is Kairo available on Android?

Currently, Kairo is exclusively available for iOS devices. We are working on an Android version for the future.

How much does Kairo cost?

Kairo offers a yearly subscription with a 3-day free trial, as well as a monthly subscription. You can test all features during the trial and cancel anytime before it ends.

Does Kairo work with Apple Health?

Yes, Kairo fully integrates with Apple Health to sync your nutrition data and provide a comprehensive health overview.

How many calories do I need per day?

Your daily calorie needs depend on factors like age, gender, weight, height, and activity level. Kairo automatically calculates your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) based on your profile using the scientifically recognized Mifflin-St Jeor equation.

What is the difference between BMR and TDEE?

BMR (Basal Metabolic Rate) is the number of calories your body burns at rest to maintain basic functions. TDEE (Total Daily Energy Expenditure) includes your BMR plus calories burned through physical activity and digestion. TDEE is the total number of calories you need per day.

What is the Body Map in Kairo?

The Body Map is a unique Kairo feature that shows you at a glance how your nutrition supports different body systems — brain, heart, muscles, bones, digestion, and skin & immune system. It provides personalized insights based on your daily food intake.

What makes Kairo different from other calorie trackers?

Kairo combines AI-powered food scanning with features like Body Map nutrition insights, social group tracking with emoji reactions, streak motivation systems, and beautiful iOS widgets. It focuses on simplicity and design while providing comprehensive nutrition tracking.

What is BMI and how is it calculated?

BMI (Body Mass Index) is calculated by dividing your weight in kilograms by your height in meters squared: BMI = weight / (height in m)². A BMI of 18.5-24.9 is considered normal weight. Note that BMI does not account for muscle mass or body composition.

All Foods

Egg (Whole, Hard-Boiled) vs Tuna (Canned in Water)

Calories, macronutrients and nutrition facts compared side by side (per 100g).

Protein

Egg (Whole, Hard-Boiled)

155 kcal12.6g Protein

per 100g

Protein

Tuna (Canned in Water)

116 kcal25.5g Protein

per 100g

Nutrition Comparison

Per 100g	Egg (Whole, Hard-Boiled)	Tuna (Canned in Water)
Calories	155kcal	116kcal
Protein	12.6g	25.5g
Carbs	1.1g	0g
Fat	10.6g	0.8g
Fiber	0g	0g
Sugar	1.1g	0g
Sodium	124mg	247mg

Green marks the more favorable value (fewer calories/sugar/sodium, more protein/fiber).

Key Takeaways

Tuna (Canned in Water) has 39 fewer calories per 100g than Egg (Whole, Hard-Boiled) (34% less).
Tuna (Canned in Water) delivers more protein (25.5g vs 12.6g per 100g).
Tuna (Canned in Water) contains less fat (0.8g vs 10.6g).
Tuna (Canned in Water) has less sugar (0g vs 1.1g).

Egg (Whole, Hard-Boiled)

Eggs are one of the most nutrient-dense foods available, containing high-quality complete protein with all essential amino acids. They are rich in choline, which is vital for brain health, as well as vitamin D, B12, and selenium. The yolk contains lutein and zeaxanthin, antioxidants important for eye health.

View Egg (Whole, Hard-Boiled) nutrition →

Tuna (Canned in Water)

Canned tuna is one of the most calorie-efficient protein sources — 25g of protein for just 116 kcal. It provides selenium, vitamin B12, and omega-3 fatty acids, though levels are lower than in fattier fish like salmon. Choose water-packed over oil-packed to keep calories down, and rotate with other fish to limit mercury exposure.

View Tuna (Canned in Water) nutrition →

Track Egg (Whole, Hard-Boiled) & Tuna (Canned in Water) in Kairo

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