Carbon vs Tidemark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Carbon
This app acts as a personalized nutrition coach, helping you track your food intake and weight to adjust your calorie and macro targets. It provides weekly check-ins with clear explanations for any changes made to your plan, supporting various dietary goals like fat loss or muscle gain.
- Adaptive macro coaching
- Personalized calorie and macro targets
- Weekly weight trend analysis
- Flexible calorie planner
- Smart food logging with photo recognition
- Support for various diet styles
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The macro tracker that coaches you. Carbon Diet Coach is a nutrition coach and calorie tracker in one. Log your food, weigh in, and check in once a week. Carbon reviews your weight trend and what you logged, decides whether your targets should change, and explains every decision. Carbon pioneered adaptive macro coaching, and thousands of members use it to lose fat, build muscle, maintain, and reverse diet. HOW WEEKLY COACHING WORKS • Answer a few questions about your goal, body, and preferences • Get personalized calorie, protein, carb, and fat targets • Log your food and weigh in, or sync your weight from Apple Health • Check in weekly. Carbon looks at your multi-week weight trend and what you actually logged, then adjusts your macros or holds them steady • Read a clear check-in report, so you're never left wondering why Carbon did or didn't make a change • Pick your check-in day, or check in early when your schedule changes PROTEIN BUILT AROUND YOU Your protein target is based on your lean body mass, with an optimal range for your goal and diet style. Research links higher protein intake during fat loss to keeping more lean mass, so Carbon keeps protein front and center all week. FLEXIBLE CALORIE PLANNER The Calorie Planner works like a weekly calorie budget. Give yourself more calories for weekends, dinners out, and events, and fewer on quieter days, while your week stays on target. • Finished days reflect what you actually tracked, and the rest of your week rebalances around them • Hold protein keeps your protein target steady while daily calories shift • Adjust calories, protein, carbs, and fat for any upcoming day, or reset a day to your weekly defaults COACHING WITH GUARDRAILS When progress stalls, Carbon makes small changes instead of big cuts, keeps your rate of loss in check, and sets a calorie floor for you. If you reach it, Carbon recommends a switch to maintenance or a reverse diet. If your week wasn't fully tracked, Carbon won't react to incomplete data. SMART LOGGING Smart Logger: snap a photo of your meal or describe it, and Carbon matches each food to an entry in our verified food database. You review the matches, confirm your servings, and log the whole plate at once. Smart Suggestions: foods you log often are pre-filled in your diary. Tap to confirm or skip. Remaining Macros: see what's left for the day and preview how a food fits before you log it. Serving Amount Solver: enter the macros you have left and Carbon finds the serving that fits. Plus a barcode scanner, nutrition label scanner, quick add, copy meals, favorites, and custom foods and recipes. GOALS AND DIET STYLES Fat loss, muscle gain, weight maintenance, and reverse dieting. Choose Balanced, Low Carb, Low Fat, Keto, Plant-Based, or High Protein then fine-tune each macro within recommended ranges. PROGRESS YOU CAN SEE Charts for weight, body fat, lean body mass, calories, macros, and estimated metabolic rate, plus a check-in history showing every adjustment and why. ALREADY HAVE YOUR OWN TARGETS? Use Carbon as a macro, protein, and nutrition tracker, calorie counter, and food log. SUPPORT FROM REAL PEOPLE Questions go to Carbon's support team, and members share tips in our private community. BUILT ON EVIDENCE Created by Dr. Layne Norton (PhD, Nutritional Sciences) and Keith Kraker, RD. SUBSCRIPTIONS Monthly, 6-month, and yearly plans. Every plan includes full access to all features. Your subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account settings. Payment is charged to your Apple Account when you confirm your purchase. Food database powered by FatSecret: https://fatsecret.com Terms and Conditions: https://joincarbon.com/terms-and-conditions/ Privacy Policy: https://joincarbon.com/privacy-policy/
Tidemark
This app helps you stay hydrated by showing you your target water intake level throughout the day. It focuses on guiding your progress rather than logging every sip, making hydration simple and manageable.
- Real-time hydration guidance
- Personalized pacing
- Track multiple bottles
- Daily streaks
- Customizable goals
- Home screen widgets
- Apple Health integration
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Most water trackers make you log every sip. Tidemark helps you stay hydrated without turning it into a chore. Set your daily water goal, wake time, sleep time, and bottle size once. From there, Tidemark shows you exactly where your water bottle should be throughout the day so you always know if you are on track. Instead of focusing on how much water you already drank, Tidemark focuses on where you should be right now. Simple. Calm. Easy to follow. HOW IT WORKS • Set your daily water goal • Choose your wake time and sleep time • Add your bottle size • Open the app anytime to see your current target fill level • Log bottles only when you finish them No sip counting. No annoying reminders every few minutes. No complicated charts. Tidemark keeps hydration steady and manageable from morning to night. FEATURES • Real-time hydration guidance • Personalized pacing throughout your day • Track multiple bottles with ease • Daily streaks to build lasting habits • Fully customizable goals and schedules • Home screen widgets for quick progress checks • Apple Health integration for automatic water logging • Beautiful dark mode support • No account required TIDEMARK PRO Unlock additional customization and widgets with Tidemark Pro. • Custom accent colors • Small and medium home screen widgets • 7-day free trial for new subscribers • Weekly, monthly, and yearly plans available • Cancel anytime in Apple ID settings PRIVACY FIRST Tidemark does not collect your personal data. If you choose to connect Apple Health, Tidemark only writes your water intake. Your health data is never read, stored, or shared. Stay hydrated without overthinking it. Download Tidemark today!
Screenshots
Verdict
The clearest difference is ratings volume: Carbon at 8.2K against Tidemark's 1. Carbon also leads on chart position (#96 vs unranked). 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. Carbon sells 9 in-app purchases, starting at $11.99 per month and Tidemark sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Tidemark holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Carbon has 8.2K ratings behind it against 1, so its average is the more settled of the two.
Carbon ships an update weekly, Tidemark every 9 days. The most recent releases landed on November 10, 2026 and November 5, 2026 respectively.
| Parameter | Carbon | Tidemark |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (8.2K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 79.2% of reviews | — |
| Number of ratings | 8.2K — better | 1 |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | #96 — better | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 105 MB | 4 MB |
| Age rating | 17+ | 4+ |
| Developer | Reform LLC | Sukhleen Kaur |
Customer experience
Carbon
Tidemark
Bugs and requests
Carbon
Reported bugs
2 issues- Occasional app crashes or freezes
- Issues with resetting account data
Requested features
4 requests- Add water intake tracking
- Improve barcode scanning functionality
- Allow more flexibility in macro adjustments
- Integrate with fitness trackers
Tidemark
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Carbon
- Monthly Subscription$11.991 Month
- Monthly Subscription7 Days trial$11.991 Month
- Monthly Subscription14 Days trial$11.991 Month
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- Six Month Subscription$59.996 Months
- Six Month Subscription7 Days trial$59.996 Months
- Six Month Subscription14 Days trial$59.996 Months
- Yearly Subscription$99.991 Year
- Yearly Subscription7 Days trial$99.991 Year
- Yearly Subscription14 Days trial$99.991 Year
Tidemark
- Tidemark Pro Weekly$0.997 Days
- Tidemark Pro Monthly$3.991 Month
- Tidemark Pro Yearly7 Days trial$29.991 Year









