Most give you the "big 4" (calories, protein, carbs, fat) and lock everything else. Need Vitamin B12 for your vegan meal planner? That's $50/month. Want iron content for a women's health app? Pay up.
The "Bait and Switch" I Kept Seeing
| API | Free Tier Nutrients | To Get All Nutrients |
|---|---|---|
| Nutritionix | 5 | $449/month |
| Edamam | 8 | $79/month |
| Spoonacular | 12 | $99/month |
| CalorieNinjas | 7 | Claims all, misses 15+ |
| Nutrition Tracker API | 30+ | Still free |
I'm not exaggerating. Go check any of these APIs and look at their free tier response. Count the nutrients. I'll wait.
Why I Made This Decision
When I built the Nutrition Tracker API, I had a choice:
Option A: Follow the industry playbook
- Give just enough data to be useful
- Gate micronutrients behind paid tiers
- Maximize conversion to paid plans
Option B: Give developers what they actually need
- All 30+ nutrients from USDA
- Even in free tier (yes, really)
- Compete on speed and reliability instead
I chose B. Here's why:
1. Micronutrients Matter for Many Apps
Building a:
- Vegan/vegetarian app? You need B12, iron, zinc
- Women's health app? Folate, calcium, iron are essential
- Sports nutrition app? Electrolytes (sodium, potassium, magnesium)
- Senior care app? Vitamin D, calcium, B vitamins
Hiding these behind paywalls means only well-funded apps get to build complete solutions.
2. The Data Already Exists
The USDA provides this data for FREE. Why should I charge you extra to access it? The value I provide is:
- Natural language parsing
- Built on a globally distributed edge network for minimal latency worldwide
- Clean, validated data
- Global Redundancy - Your requests are routed to the nearest healthy data center.
- Actually accurate fat breakdowns (see my previous post)
3. I'd Rather Win on Merit
If my API is genuinely better maintained, faster, and more accurate - that's worth paying for at scale. I don't need to artificially limit the free tier.
What You Actually Get (Free Tier)
POST /v1/calculate/natural
{
"text": "100g spinach"
}
Response includes:
{
"totalNutrients": {
"Energy": { "value": 23, "unit": "kcal" },
"Protein": { "value": 2.86, "unit": "g" },
"Fat": { "value": 0.39, "unit": "g" },
"Carbohydrate, by difference": { "value": 3.63, "unit": "g" },
"Fiber, total dietary": { "value": 2.2, "unit": "g" },
"Sugars, total": { "value": 0.42, "unit": "g" },
"Calcium, Ca": { "value": 99, "unit": "mg" },
"Iron, Fe": { "value": 2.71, "unit": "mg" },
"Magnesium, Mg": { "value": 79, "unit": "mg" },
"Phosphorus, P": { "value": 49, "unit": "mg" },
"Potassium, K": { "value": 558, "unit": "mg" },
"Sodium, Na": { "value": 79, "unit": "mg" },
"Zinc, Zn": { "value": 0.53, "unit": "mg" },
"Vitamin C, total ascorbic acid": { "value": 28.1, "unit": "mg" },
"Vitamin A, IU": { "value": 9377, "unit": "IU" },
"Vitamin A, RAE": { "value": 469, "unit": "µg" },
"Vitamin E (alpha-tocopherol)": { "value": 2.03, "unit": "mg" },
"Vitamin K (phylloquinone)": { "value": 482.9, "unit": "µg" },
"Thiamin": { "value": 0.078, "unit": "mg" },
"Riboflavin": { "value": 0.189, "unit": "mg" },
"Niacin": { "value": 0.724, "unit": "mg" },
"Vitamin B-6": { "value": 0.195, "unit": "mg" },
"Folate, total": { "value": 194, "unit": "µg" },
"Vitamin B-12": { "value": 0, "unit": "µg" },
"Choline, total": { "value": 19.3, "unit": "mg" },
"Selenium, Se": { "value": 1, "unit": "µg" },
"Copper, Cu": { "value": 0.13, "unit": "mg" },
"Manganese, Mn": { "value": 0.897, "unit": "mg" }
}
}
30+ nutrients. In the free tier. Every single request.
The Math That Convinced Me
Scenario: You're building a diet app and need full vitamin data.
With other APIs:
- Free tier: Missing vitamin K, B12, folate, selenium
- Upgrade to get them: $79/month minimum
- Your hobby project now costs $948/year
- Most people give up
With Nutrition Tracker API:
- Free tier: All 30+ nutrients included
- Build your MVP at $0
- Only pay if you scale past free limits
- More apps get built
I'd rather have 1000 developers building cool things for free than 10 paying $79/month.
Try It Yourself
curl -X POST "https://nutrition-tracker-api.p.rapidapi.com/v1/calculate/natural" \
-H "X-RapidAPI-Key: YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"text": "1 banana and 2 tablespoons peanut butter"}'
Count the nutrients in the response. Compare to any competitor.
Should You Pay for the Paid Tier?
Honestly? Here's when it makes sense:
- ✅ Processing 3+ items per request (free = 2 items max)
- ✅ Need priority support
- ✅ Higher rate limits for production
The paid tier isn't about unlocking nutrients. It's about scale and support.
Links:
Building something with complete nutrient data? I'd love to hear about it in the comments.
This is part of a series about building the Nutrition Tracker API. Previously: Why Your Nutrition App's Data Might Be Wrong and Build a Beautiful Meal Tracker
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