Caltopia vs LogZero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Caltopia
This app offers private, offline calorie and macro tracking with an on-device AI coach for personalized insights and recipes. It supports voice logging, intermittent fasting, and GLP-1 tracking, with data securely stored on your device. Import data from other services and export your logs in various formats.
- Offline calorie and macro tracking
- On-device AI coach for insights and recipes
- Voice logging and nutrition label OCR
- Intermittent fasting timer
- GLP-1 tracking
- Data import from MyFitnessPal
- Adaptive calorie and macro targets
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Caltopia is a private, offline calorie tracker, macro counter, and food diary — with an on-device AI coach, voice logging, intermittent fasting, and GLP-1 tracking built in. Try everything free for 7 days, then $1.99/month — or pay once ($20) and own it for life. No ads, no accounts, no third-party cloud. Your data stays on your phone. 48,000 FOODS, OFFLINE A USDA + branded-foods database downloads on first launch (~4 MB). After that, search, logging, and charts all work with no internet — on a flight, in the gym, anywhere. LOG A MEAL FIVE WAYS • Barcode scan for packaged food • Voice: "two eggs and a slice of toast" — parsed on-device • Photo of your meal — on-device AI suggests it • Nutrition-label OCR • One tap on a recent food Food data: USDA (public domain, bundled offline) + Open Food Facts. ON-DEVICE AI COACH Ask about your own log — "how much protein did I average?" — and get answers from your data (observations, never medical advice). Say what's in your fridge and get a recipe you can log or save. Uses Apple Intelligence where available, a built-in offline cookbook everywhere else. VOICE LOGGING Tap the mic or the Home Screen widget and just talk. It understands quantities and units — even "a beef stick, 100 calories." Your voice never leaves the phone. INTERMITTENT FASTING A live fasting timer in your calorie ring and on the Lock Screen (Dynamic Island). 16:8, 18:6, 20:4, OMAD, or any custom target, with trends and weekly summaries. TRACK WHAT MATTERS TO YOU Workouts, blood glucose, and GLP-1 (doses, injection-site rotation, side effects) — all user-entered, no medical advice. Build your own recipes and plan meals ahead. ADAPTIVE TARGETS Start with Mifflin–St Jeor BMR + activity multipliers. Turn on Adaptive TDEE and Caltopia learns your real calorie burn from your logs and weight trend, adjusting targets automatically. Pick a goal: lose, maintain, gain, or recomp. INSIGHTS & WIDGETS A 13-week logging heatmap, calorie/macro/water/weight trend charts, and weekly summaries. Home Screen and Lock Screen widgets for calories, macros, water, fasting, and your streak. STAY MOTIVATED 60 achievements, weekly quests, daily challenges, streaks, XP, and levels — fun on top of the data, not in place of it. PRIVATE BY DEFAULT No account. No login. No analytics or ad trackers. Data is stored locally with Apple's SwiftData. Optional backup goes only to your own private iCloud, never our servers. Two-way Apple Health sync. Full Excel export and re-import anytime. PRICING & FREE TRIAL Start with a 7-day free trial — every feature unlocked. Then Caltopia Pro is $1.99/month, or unlock for life with a single $20 purchase. The monthly plan auto-renews unless canceled at least 24 hours before the period ends; manage or cancel anytime in your App Store settings. Lifetime is a one-time purchase, no recurring charges. Privacy Policy: https://caltopia.org/privacy/ Terms of Use (EULA): https://caltopia.org/terms/ Caltopia is a wellness self-tracking tool. It is not a medical device and does not provide medical advice, diagnosis, or treatment. Always consult a healthcare professional before changing your diet, exercise, or medication routine.
LogZero
This app allows you to track various aspects of your life, including mood, habits, food, exercise, and medication, all on your device. It focuses on privacy and security, offering insights into your data without collecting or sharing it.
- Mood tracking with emotions and gratitude
- Food logging with macro and nutrient tracking
- Weight tracking with goal setting
- Exercise logging and impact analysis
- Todo list management
- Medication adherence tracking
- Data correlation and insights
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Track Everything. Share Nothing. LogZero is the all-in-one private life tracker for mood, habits, food, weight, exercise, meditation, medication, todos and more. Everything stays on your iPhone. No ads. No cloud. No accounts. No analytics. LogZero has security and privacy integrated into it's DNA. LogZero is built by Andrew Hoffman, LLC — owned by Andrew Hoffman: a cybersecurity architect, author and educator. ONE OFFLINE APP FOR YOUR ENTIRE DAY Mood module — multi-step daily entries with emotions, activities, gratitude notes, and free-form text. The depth of a private diary, the speed of a tap. Food module — daily recording of macros against your own targets. Can be configured to track additional vitamins, nutrients and supplements. Scan labels or log manually. Weight module — log weight over time, set goals, configure charts for easier data review. Exercise module — log workout minutes rapidly and build data to see how your workouts impact your mood and weight. Todo module — prioritized, filterable cross-day tasks with tags, completion trends, and a planning view. Meditation module — daily meditation tracking tied to correlations module to show it's impact on your mood. Medication module — schedule medication and supplement protocols, adherence tracking, prescription refill reminders and more. Correlation module — analyze data from all the other modules to draw insights into what is impacting your weight, mood and behavior. Correlation module — the most important insights from the other modules, charted, configurable and readable at at glance. 100% PRIVATE. 100% ON-DEVICE. LogZero has no servers. None. Every entry — every mood, meal, weight, symptom, medication dose, and meditation minute lives on your device and nowhere else. We can't see your data by design, and this sets our app apart from almost every competitor. No Data Collected — verified by Apple's privacy label No account required No ads. No telemetry. No third-party SDKs. Works fully offline — designed for airplane mode, weak signal, and people who explore beyond the bounds of cellular internet Full data export to CSV or JSON, anytime with optional encryption using AES-256 If you've moved away from other apps because of privacy or security concerns, LogZero is the app you are looking for. Privacy and security are baked into LogZero's DNA. SEE THE PATTERNS, NOT JUST THE ENTRIES LogZero's correlation engine surfaces relationships between your trackers: how exercise shifts your mood, what foods line up with weight changes, which activities precede your best days. The kind of analysis a cloud app uses your data to build, but instead done entirely on your phone, for your eyes only. LOGZERO PRO Free is genuinely useful — every tracker works end-to-end without paying. Pro unlocks deeper analytics, biometric & passcode support, encrypted backups, and personalization controls. $4.99/month — low-commitment, cancel anytime $34.99/year — best value, save ~42% $99 lifetime — pay once, own it forever (regularly $149) Cancel anytime in iOS Settings. WHY LOGZERO EXISTS Most wellness apps make money by selling your data, serving you ads, creating artificial scarcity, sending you to affiliate links and so on. LogZero's only revenue is your subscription. That's the entire business model — and the reason your data never leaves your phone. Track everything. Share nothing. LEGAL INFORMATION Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://logzero.app/privacy/#policy
Screenshots
Verdict
The clearest difference is monetization model: LogZero at freemium against Caltopia's paid. On price, rating, review sentiment and ratings volume 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. Caltopia sells 1 one-off in-app purchase and LogZero sells 3 in-app purchases, starting at $5.00 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 — 5.0 for Caltopia against 5.0 for LogZero. Both are backed by a comparable volume of ratings — 7 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Caltopia ships an update every 3 days, LogZero every 5 days. The most recent releases landed on October 8, 2026 and October 5, 2026 respectively.
| Parameter | Caltopia | LogZero |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (7 ratings) | 5.0 (8 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 | 8 — better |
| Update frequency | Every 3 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 10 MB | 8 MB |
| Age rating | 12+ | 4+ |
| Developer | COLE SHANE WILLIAMS | Andrew Hoffman, LLC |
Customer experience
Caltopia
LogZero
In-app purchases
Caltopia
- Caltopia Unlock$9.99
LogZero
- LogZero Pro — Monthly$5.001 Month
- LogZero Pro — Annual$35.001 Year
- LogZero Pro — Lifetime$99.00









