CalTrak vs Simple Calorie Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalTrak
This app helps you track your daily calorie and macronutrient intake with multiple logging options including barcode scanning, AI estimation, and photo recognition. It offers personalized targets, visual progress tracking, and integrates with Apple Health for a comprehensive overview of your health journey.
- Barcode scanning for nutrition data
- AI-powered meal estimation from descriptions
- Photo recognition for labels and plates
- Personalized calorie and macro targets
- Visual progress tracking with rings and charts
- Apple Health and Watch integration
- Privacy-focused local data storage
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CalTrak is a calorie and macro tracker for iPhone. Log a meal by barcode, search, photo, or quick description. Watch your day take shape on a clean ring. See your week, month, and quarter at a tap. Everything stays on your device — no account, no subscription, no ads. Completely free. No ads, subscriptions, accounts, or paid features. CalTrak includes an entirely optional one-time tip jar for anyone who wants to support development. Tips unlock nothing and are never expected. FIVE WAYS TO LOG A MEAL • Scan a product barcode — pulls nutrition straight off the label • Search across Open Food Facts, FatSecret, and USDA FoodData Central • Describe a meal in your own words ("chipotle bowl, double chicken, sour cream") for an AI estimate • Snap a photo of a nutrition label, restaurant menu, or your plate — works with camera, photo library, or clipboard paste • Enter a custom food in any unit: grams, ounces, cups, milliliters, servings, pieces PERSONALIZED TARGETS • Goal wizard uses the Mifflin-St Jeor equation plus your activity level to compute daily calorie and macro targets • Higher protein during weight loss; sensible safety floors built in • Re-runnable anytime — your last inputs are remembered YOUR DAY, WEEK, AND QUARTER AT A GLANCE • Macro ring tracks calories alongside carbs, protein, and fat • Calorie trend chart with 7-, 30-, and 90-day toggles and your goal as a reference line • Activity chart with matching toggles for calories burned and active minutes • Per-meal averages, top foods, weight trend, body measurements • Calendar heatmap of every day you've logged, with goal status at a glance STREAKS THAT FORGIVE • Logging streak with a daily-dot week view • Earn a streak freeze every 14 days — automatically saves a missed day, up to two banked at any time • Smart reminders fire around your typical meal times rather than at a fixed evening hour DEEP APPLE HEALTH + WATCH INTEGRATION • Auto-imports Apple Watch workouts with route maps for walks, runs, and rides • Recognizes 50+ workout types with proper names and icons • Calorie Burn Bonus credits genuine activity above your maintenance burn • Writes logged nutrition, weight, and body measurements back to Health on your terms PRIVACY-FIRST • Your food log, weight, measurements, and history are stored locally on your device • Search and AI lookups route through a stateless proxy that does not store request contents • No account, no sign-in, anywhere • No advertising, tracking, crash-reporting, or third-party analytics SDKs • Full JSON export and import for portability DESIGNED FOR EVERYONE • VoiceOver labels and logical grouping across rings, charts, calendar cells, and food rows • Honors Reduce Motion on every animation • Dynamic Type-aware typography in primary flows • Color-independent status indicators Every feature is free and unrestricted. Optional one-time tips are available in Settings and unlock nothing.
Simple Calorie Tracker
This app uses AI to help you track your calorie and macro intake. It offers features like barcode scanning, food search, and weight tracking. It also syncs with health platforms and provides personalized insights based on your data.
- AI meal photo scan
- Barcode scanning
- Food database search
- Manual macro logging
- Weight tracking with trend line
- Apple Health & Google Health sync
- Home and Lock Screen widgets
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Calvin is a simple calorie, macro, fitness, and health tracker that keeps the basics free. Track food, calories, macros, weight, workouts, steps, sleep, recovery, and health trends in one place — without ads or requiring an account. Barcode scanning and food search are free. Most calorie trackers moved them behind a subscription. Calvin does not. FREE, AND STAYING FREE • Barcode scanning for packaged foods • Food search with USDA Branded and Open Food Facts • Calorie, macro, protein, carb, fat, fiber, sugar, and sodium tracking • Fast manual logging, common foods, recents, usuals, one-tap repeat logging, and copy yesterday's log • Custom recipes • Weight tracking with a smoothed trend line and adaptive maintenance calories based on your real weight trend • Fitness tracking for workouts, steps, distance, and active time • Apple Health integration and automatic compatible smart-scale weigh-ins • Body fat and lean mass trends when available • Google Health connection • Sleep, HRV, resting heart rate, personal baselines, and a daily recovery score • Weekly and monthly recaps, plus year in review • Home Screen and Lock Screen widgets • Apple Watch app and complication • Siri, Shortcuts, and CSV export FAST FOOD LOGGING Start typing a food and Calvin surfaces foods you've logged before. One tap logs it again. The built-in pantry makes everyday staples like eggs, apples, rice, and chicken quick to add. CALORIES & MACROS, YOUR WAY Calories stay front and center while macros and nutrients are there when you want them. Choose which metrics appear throughout the app. Turn calorie numbers off for a simpler on-track-or-over view. FITNESS, WEIGHT & MAINTENANCE CALORIES Keep workouts and daily activity alongside nutrition. Track weight with a smoothed trend line, and let Calvin adapt your maintenance-calorie estimate over time based on your real weight trend. HEALTH & RECOVERY Bring together sleep, HRV, resting heart rate, breathing rate, activity, and other available health signals. Calvin compares supported metrics with your recent baseline. Your daily recovery score summarizes how you're doing and highlights the signals that changed. APPLE HEALTH & SMART SCALES Connect Apple Health to bring supported fitness and health data into Calvin. Compatible smart-scale weigh-ins can appear automatically, including body fat and lean mass when your scale provides them. Connections are optional. APPLE WATCH Check calories remaining, your chosen macros, and recovery from the Calvin Apple Watch app and complication. NO ACCOUNT NEEDED. NO ADS. Use Calvin without creating an account. Your food log lives on your device, not on a Calvin server. Connecting Apple or Google is optional and does not upload or restore your food log. WEEKLY, MONTHLY & YEARLY TRENDS See patterns across nutrition and health data with weekly and monthly recaps and a year in review. CALVIN PLUS — AI MEAL SCANNER Calvin Plus adds AI-powered meal photo scanning and deeper insights. Take a photo and Calvin identifies foods on your plate and estimates their nutrition. It can account for things a photo may miss, like cooking oil, and asks before keeping uncertain additions. Adjust portions, add a missing item, or make a correction without starting over. Monthly and annual plans are available in your local App Store currency with a 3-day free trial. Barcode scanning, food search, calorie and macro tracking, fitness, weight, health features, and the other core features above remain free. SIMPLE BY DESIGN Calvin helps you understand nutrition, fitness, weight, and health without turning every meal into homework. Track what matters. Ignore what doesn't. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://calvinhealth.com/privacy
Screenshots
Verdict
The clearest difference is monetization model: CalTrak at free against Simple Calorie Tracker's freemium. CalTrak also leads on ratings volume (95 vs 1). Simple Calorie Tracker's advantage is iOS requirement (18.0 vs 26.0). On price, rating, update cadence and ads 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
Both are free to download. CalTrak sells 3 one-off in-app purchases and Simple Calorie Tracker sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for CalTrak against 5.0 for Simple Calorie Tracker. That said, the two scores are not equally well evidenced: CalTrak has 95 ratings behind it against 1, so its average is the more settled of the two.
CalTrak ships an update every 3 days, Simple Calorie Tracker every 2 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.
| Parameter | CalTrak | Simple Calorie Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (95 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 95 — better | 1 |
| Update frequency | Every 3 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 26.0 | 18.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 18 MB |
| Age rating | 4+ | 12+ |
| Developer | Ryan Bulcher | Kevin Miguel Estrada Garcia |
Customer experience
CalTrak
Simple Calorie Tracker
In-app purchases
CalTrak
- Buy Cal a coffee$1.99
- Support development$4.99
- Big thank you$9.99
Simple Calorie Tracker
- Calvin Plus3 Days trial$9.991 Month
- Calvin Plus Annual3 Days trial$49.991 Year









