Comparison

Autophagy Tracker vs AI Calorie Tracker

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

Head to head
About

Autophagy Tracker

Features
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Autophagy is a minimalist fasting timer that tracks your body's metabolic phases in real time — from digestion through glycogen depletion to autophagy and beyond. SCIENCE-BASED FASTING PHASES Follow your progress through 7 distinct metabolic phases, each backed by research: • 0–4h: Digestion — insulin active, nutrient absorption • 4–12h: Glycogen depletion — blood sugar stabilizes, insulin drops • 12–16h: Fat burning — glycogen depleted, switching to fat • 16–24h: Early autophagy — cellular cleansing begins, growth hormone rises • 24–48h: Active autophagy — significant cell cleansing, deep ketosis • 48–72h: Peak autophagy — immune system renewal, IGF-1 drops • 72h+: Deep autophagy — advanced cell regeneration REAL-TIME TIMELINE See exactly where you are in the fasting process. Each phase shows key biological processes, active markers, and how far you've progressed. Completed phases are marked, upcoming ones give you something to work toward. FLEXIBLE START Start fasting now or set a custom time for when your last meal was — the timer adjusts automatically. OPTIONAL GOALS Set a target duration to see your remaining time and track goal completion in your history. FASTING HISTORY & STREAKS Review past fasts with duration, phase reached, and goal status. Track your current and longest streaks to stay motivated. APPLE WATCH A full companion app for your wrist. Track your fast, see your current phase, and stop your timer — all without reaching for your phone. NOTIFICATIONS Choose between no notifications, reduced (start and end only), or all phase transition alerts. Stay informed without being overwhelmed. EXTENDED MODE Continue tracking beyond 72 hours for advanced fasting protocols. PRIVACY FIRST All data stays on your device. No accounts, no cloud sync, no tracking. Autophagy was inspired by Nobel Prize-winning research on cellular self-renewal. The app is designed with a Dieter Rams-inspired aesthetic: minimal, typographic, and functional — so you can focus entirely on your fast.

About

AI Calorie Tracker

Features
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SnapMacro helps you log meals and follow your calories and macros without a sign-up wall. Start as a guest, then save an account when you're ready. FIVE WAYS TO LOG • Photo: photograph a meal for an AI estimate of its foods, portions, calories and macros. Review and edit everything before saving. • Search: find foods by name. • Barcode: scan packaged foods. • Manual: create a food with your own nutrition values. • Quick calories: log just the calories when you don't know the details. SEE YOUR DAY Follow calories, protein, carbs and fat across breakfast, lunch, dinner and snacks. Correct a logged food's values by hand, reuse recently logged foods, track water and check your progress with weekly and monthly calorie, macro and weight charts. OPTIONAL HEALTH SYNC With your permission, Apple Health can share selected activity and weight measurements with SnapMacro. You can revoke access at any time. FREE AND PREMIUM Food logging, your diary and progress charts are free, and a limited number of AI photo analyses are included. SnapMacro Premium includes up to 30 AI photo analyses a day (the count starts over at midnight, your local time) and unlocks Insights: meal timing, weekday vs. weekend habits, goal consistency and how your intake tracks your weight. Premium is a monthly or yearly auto-renewing subscription. The price is shown before you confirm, and you can cancel anytime in your Apple ID settings. Available in 33 languages, with metric and imperial units and dark mode. YOUR DATA Usage analytics are off unless you opt in. AI analysis is optional: before your first photo analysis, SnapMacro asks your permission to send meal photos, and searches our food list can't answer, to Anthropic, the company behind the Claude AI. Search, barcode and manual logging work without it. In Profile → Privacy & data you can export your data as a ZIP file or delete your account immediately, with no waiting period. Support: info@odbs.tech Privacy Policy: https://snapmacro.odbs.tech/en/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Autophagy Tracker4 screens
AI Calorie Tracker4 screens

Verdict

The call

The clearest difference is update cadence: Autophagy Tracker at every 3 days against AI Calorie Tracker's every 9 days. 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Autophagy Tracker ships an update every 3 days, AI Calorie Tracker every 9 days. Both last shipped on October 24, 2026.

Scorecard1 real difference · 7 level
Autophagy Tracker versus AI Calorie Tracker: the parameters behind the verdict, then further details
ParameterAutophagy TrackerAI Calorie Tracker
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days — betterEvery 9 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size2 MB74 MB
Age rating4+17+
Developertva Pte. Ltd.ODBS LLC

In-app purchases

None

Autophagy Tracker

No in-app purchases

None

AI Calorie Tracker

No in-app purchases

Questions

Is Autophagy Tracker free?
Autophagy Tracker is free to download, with no in-app purchases.
Is AI Calorie Tracker free?
AI Calorie Tracker is free to download, with no in-app purchases.
Do Autophagy Tracker or AI Calorie Tracker have ads?
Neither Autophagy Tracker nor AI Calorie Tracker shows ads.
Which is updated more often, Autophagy Tracker or AI Calorie Tracker?
Autophagy Tracker ships an update every 3 days, and AI Calorie Tracker every 9 days. Most recently, Autophagy Tracker was updated on October 24, 2026 and AI Calorie Tracker on October 24, 2026.

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