Comparison

CalTracker vs CarnivOS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CalTracker

Features
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Are you frustrated by complicated calorie apps where manual entry is a chore? Do you feel quickly demotivated by cluttered interfaces and scary red warnings? CalTracker was designed just for you. Our vision is an app that's finally fun, promoting healthy habits through a playful and positive approach. We are the app for "simplified beginners" who want to reach their goals without getting lost in complex data. WHAT MAKES CALTRACKER UNIQUE: * SNAP INSTEAD OF TYPING (AI PHOTO ANALYSIS) This is the core of CalTracker and the solution to your "tracking fatigue." Simply take a photo of your meal—whether at a restaurant, in the cafeteria, or at home. Our AI recognizes the food and estimates the nutritional values for you. This puts an end to tedious typing. And if a photo isn't an option, a simple quick search provides an alternative. * STAY MOTIVATED LIKE NEVER BEFORE (YOUR FLAME STREAK) The real engine for building habits is our motivating streak system. For every day you track your food, you build a "flame series" (Streak). This creates a daily sense of accomplishment and a strong incentive to stay on track. Maintaining a streak makes you proud! * WE CELEBRATE YOUR SUCCESS, NOT YOUR MISTAKES Our approach is positive reinforcement. The app praises you for reaching milestones, like "Great job, 7 days in a row!". And if you go over your goal? No problem! Instead of red warnings, our message is: "Tomorrow is a new day!". We celebrate your weekly highlights and provide simple, actionable insights that focus on your positive patterns, not on pointing out negative habits. * CLARITY INSTEAD OF COMPLEXITY You won't see any cluttered tables with us. Your daily progress is shown as a simple, visual circle or bar that fills up—using friendly colors that avoid threatening red. The view is reduced to the essentials to keep you from feeling overwhelmed. CalTracker is the best alternative for the millions of people who have almost given up because no app was simple and motivating enough. We don't sell a tracking tool; we sell a positive feeling and the sense of accomplishment that comes from finally sticking with it. Note: CalTracker requires an active subscription to use. After your free trial concludes, a paid subscription is required to continue tracking your journey. TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

CarnivOS

Features
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Carnivore food logging with targets, evidence labels, and clear limits on what estimates can show. CarnivOS is built for carnivore, zero-carb, and animal-based eating—not a generic calorie counter with meat added later. — BUTCHER SELECT — Compare logged foods with estimated nutrient targets and find animal-food options. These estimates do not diagnose a deficiency or prescribe treatment. — LONGER-TERM VIEW — Review longer-term intake estimates with visible uncertainty. They are not measurements of nutrient stores in your body. — FOOD AND BODY-SIGNAL DIARY — Log sleep, energy, digestion, mood, joints, focus, and meals in one timeline. Same-day or nearby entries are observations, not proof that one caused the other. — PROFILE-BASED TARGETS — Review nutrient reference targets calculated from the profile information you provide. They are educational estimates, not medical prescriptions. — ELECTROLYTE LOG — Record sodium, potassium, and magnesium alongside symptoms. A food log cannot measure electrolyte status, diagnose a cause, or prescribe an intake. — BILLING — Cancel through your App Store account settings. Purchases and refund requests are handled under the store's applicable policies. CarnivOS is not a medical device and does not diagnose, treat, cure, or prevent disease. Seek qualified medical care for health concerns. Terms of Use: https://carnivos.app/terms.html Privacy Policy: https://carnivos.app/privacy.html

Screenshots

CalTracker3 screens
CarnivOS4 screens

Verdict

The call

The clearest difference is update cadence: CarnivOS at fortnightly against CalTracker's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CalTracker sells 2 in-app purchases, starting at $3.99 per month and CarnivOS sells 3 in-app purchases, starting at $30.00 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CalTracker ships an update every 2 months, CarnivOS fortnightly. Both last shipped on October 25, 2026.

Scorecard1 real difference · 5 level
CalTracker versus CarnivOS: the parameters behind the verdict, then further details
ParameterCalTrackerCarnivOS
PriceFreeFree
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size79 MB19 MB
Age rating4+17+
DeveloperDorian Laforetsusami hayato

In-app purchases

2 purchases

CalTracker

Subscriptions2
  • Pro - monthly1 Month trial$3.991 Month
  • Pro - annual1 Month trial$17.991 Year
3 purchases

CarnivOS

Subscriptions2
  • CarnivOS Premium - Monthly1 Month trial$30.001 Month
  • CarnivOS Premium Yearly7 Days trial$200.001 Year
One-time1
  • CarnivOS Founding 500 - Lifetime$99.00

Questions

Is CalTracker free?
CalTracker is free to download, with in-app purchases available.
Is CarnivOS free?
CarnivOS is free to download, with in-app purchases available.
Do CalTracker or CarnivOS have ads?
Neither CalTracker nor CarnivOS shows ads.
Which is updated more often, CalTracker or CarnivOS?
CalTracker ships an update every 2 months, and CarnivOS fortnightly. Most recently, CalTracker was updated on October 25, 2026 and CarnivOS on October 25, 2026.

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