⚗️ Vet-Inspired Nutrition Calculator

Stop guessing if your homemade pet food is actually safe.

Petriva tracks calcium ratios, taurine levels, and daily calories in real time — so you can feed fresh with complete confidence.

Get Instant Access — from $37 →
petriva.pet — Luna's Tuesday Meal
Daily Calories
847
of 900 kcal target · 94%
Ca:P Ratio
1.24
:1 · Target 1.1–1.3 ✓
Taurine 148 mg / 1000 kcal · Min: 100
Protein 52g · On target
80/10/10 Rule Muscle 81% / Liver 10% / Organ 9%
✓ All safety checks passed — this meal is balanced
🐕 Works for dogs & cats
Instant web app access
🔬 Based on AAFCO & NRC guidelines
🔄 30-day money-back guarantee
📱 Works on any device
The Hidden Risk

Fresh food is better. The math is the hard part.

You already know that whole, unprocessed food is better for your pet than a bag of ultra-processed kibble. You've done the reading. You care deeply. But somewhere between "this is the right thing to do" and actually building a balanced meal every day, there's a gap that almost nobody talks about.

Most pets eating homemade diets are getting close to nutritional balance — but close isn't enough when the consequences compound quietly over months.

Here's what the research actually says: muscle meat — the foundation of most homemade diets — is rich in phosphorus and almost completely devoid of calcium. Without a compensating source (raw bone, calcium carbonate, or ground eggshell), the phosphorus-to-calcium imbalance triggers the body to pull calcium from the one place it always has: your pet's skeleton.
🦴

Skeletal Calcium Loss

Unbalanced Ca:P ratios cause nutritional secondary hyperparathyroidism. Subtle symptoms — stiffness, reluctance to jump — are easy to miss until damage is done.

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Taurine Deficiency (Cats)

Cats cannot synthesize taurine. A deficiency causes dilated cardiomyopathy and retinal degeneration — often irreversible by the time symptoms appear.

The fix for both of these is genuinely simple once you know the numbers. The problem is that tracking them manually — across every ingredient, every meal, every day — is slow, error-prone, and honestly exhausting.

That's the problem Petriva solves.

Introducing Petriva

The interactive planner that does the nutrition math for you.

Add ingredients. Type the weight in grams. Watch every safety gauge update in real time. That's the entire workflow — no formulas, no spreadsheets, no second-guessing.

⚖️
Live Ca:P Ratio Tracker
The most critical safety metric in any home-cooked diet, calculated continuously as you build. A bold warning appears the instant it drifts outside the safe 1.1–1.3:1 range.
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Feline Taurine Safeguard
Automatically tracks taurine per 1,000 kcal against the 100 mg minimum. Flags a red alert for cat meals that fall short, before you ever serve the bowl.
🥣
80/10/10 BARF Rule Checker
For raw feeders: the app automatically aggregates your ingredients by category and shows exactly where you stand against the ancestral muscle/liver/organ ratio.
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Vet-Formula Calorie Calculator
Enter your pet's weight, species, and activity level. Petriva uses the standard veterinary RER formula to calculate their precise daily calorie target automatically.
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Batch Prep & Shopping List
Scale any balanced recipe to 7, 14, or 30 days with one click. Get an exact shopping list in grams and pounds — ready to hand to your butcher or enter into Instacart.
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Pre-Loaded Ingredient Database
18+ whole foods pre-loaded with verified nutritional data per 100g — from ground beef and chicken liver to sardines, beef kidney, and calcium carbonate supplement.
How It Works

From zero to a balanced meal in under three minutes.

01

Set up your pet's profile

Enter your pet's name, species, weight, and activity level. Petriva instantly calculates their exact daily calorie requirement using the standard veterinary metabolic formula — displayed as a clear, plain-English number.

02

Build your meal in the Mixing Bowl

Click ingredients from the searchable database and type the weight in grams. Every safety gauge — calories, Ca:P ratio, taurine, 80/10/10 — updates the moment you add or adjust anything. No save button. No page reloads.

03

Check the Safety Panel

A color-coded status block tells you instantly: green means this meal is balanced and safe. Red means something specific needs adjusting — and it tells you exactly what to change and why.

04

Scale and shop

Happy with the recipe? Hit the Batch Prep view, choose your horizon (1, 7, 14, or 30 days), and get a complete shopping list — exact quantities in grams and pounds — ready to print or share.

What You Get

Everything in one instant-access package.

From Pet Parents

Finally, something that makes home feeding feel manageable.

★★★★★
"I was raw feeding for 8 months before I realised I'd never accounted for taurine properly. Petriva flagged it on the first meal I built. That alone was worth every penny."
🐱
Sarah M.
Cat parent · Maine Coon
★★★★★
"The shopping list feature changed my whole prep routine. I batch cook for my two dogs every two weeks now — I just hit the 14-day scale button and hand the list to my butcher."
🐕
James T.
Dog parent · Two Labradors
★★★★★
"I showed this to my vet and she was genuinely impressed by how it tracks the Ca:P ratio. She said most of her raw-feeding clients have no idea that number even exists."
🐕
Rachel K.
Dog parent · Senior Dachshund
Simple Pricing

One-time purchase. No subscription. Instant access.

Starter
Safety Guide
The essential reference for any home feeder — free, no email required.
$ 0
  • Homemade Pet Food Safety Matrix PDF
  • Ca:P ratio quick-reference chart
  • 15 toxic foods to avoid list
  • Taurine source guide for cats
Download Free PDF →
Premium
Complete Bundle
The planner plus 20 vet-checked foundational recipes for common conditions.
$ 67 one-time
  • Everything in Core
  • 20 pre-balanced foundational recipes
  • Single-protein elimination diet recipes
  • Low-fat pancreatitis protocol
  • High-protein active dog blueprints
  • Senior joint-support formula
  • Priority email support
Get the Bundle — $67 →
🛡️ 30-day money-back guarantee — if Petriva doesn't save you time and give you genuine confidence in your pet's meals, reply to your receipt email for a full refund. No questions asked.
Questions

Answered.

Petriva is a web application — it runs entirely in your browser. No downloads, no installs, no app store. It works on Mac, Windows, iPad, iPhone, and Android. You'll receive a link with instant access after purchase.
Yes. The calorie calculations use the standard Resting Energy Requirement (RER) formula used in veterinary practice. The nutrient targets — Ca:P ratio ranges, taurine minimums, and protein/fat ratios — are derived from AAFCO and NRC nutritional guidelines for companion animals. The app does not replace a veterinary nutritionist for animals with specific medical conditions.
The Core version includes 18+ pre-loaded ingredients covering the most common whole foods used in home-cooked and raw diets. Adding custom ingredients is a feature on the roadmap and will be included in a future update — which all purchasers receive at no extra cost.
Yes — Petriva is built for both. When you set up a cat's profile, the taurine safeguard activates automatically (cats have a unique requirement that dogs don't share). The calorie formula also uses cat-specific activity multipliers, which are different from canine values.
30 days, no questions asked. If Petriva doesn't genuinely help you feed your pet with more confidence and less stress, reply to your purchase receipt and you'll receive a full refund within 48 hours.
The Core plan gives you the full interactive planner — the calculator, all safety trackers, and the batch prep tool. The Premium Bundle adds 20 ready-to-use, pre-balanced foundational recipes for specific needs: single-protein elimination diets for allergy testing, low-fat formulas for dogs with pancreatitis, high-protein blueprints for working or active dogs, and senior joint-support protocols. If you're starting from scratch and want a library of proven starting points, the Bundle saves significant trial and error.
Your pet chose you.

Feed them like you mean it.

Every meal is a chance to get it exactly right. Petriva makes that possible — without the math anxiety, without the guesswork, and without the nagging worry that something important is being missed.

Get Petriva Instant Access →
From $37 · One-time purchase · 30-day money-back guarantee · Works on any device