The calorie tracker that warns you when you eat too little.

Yes. You can log for free, with no ads. Paid plans add extra logging tools and history.

To lose weight you eat fewer calories than you burn, and about 7,700 kcal equals one kilogram of body fat. Caltide works out your maintenance from your age, sex, height, weight and activity, then subtracts a daily deficit set by the pace you choose. A pace of 0.5 kg a week means eating about 550 kcal a day below maintenance. Work out your own number with the free calorie calculator.

It depends on your body: 1,200 kcal is below what many adults burn at rest. Caltide does not use a flat 1,200 rule. It sets a personal minimum from your basal metabolic rate (BMR), never below a safe minimum, and if several recent days finish under it, Tide warns you. Caltide never lowers your goal or stops you logging because of it: it warns, it does not restrict. See yours with the free BMR calculator.

The usual reasons are an overestimated maintenance number, servings logged smaller than they were, and day-to-day water swings hiding real fat loss. Caltide recalculates your maintenance from what you logged and what your weight did, and shows a 7-day weight trend instead of single weigh-ins, so one salty dinner does not look like a stall. Check your maintenance with the free TDEE calculator.

Yes, as long as the week adds up. Weight follows your total intake over days and weeks, not any single day. Caltide's weekly calorie bank adds up what you saved on each finished day, so a lighter Tuesday can pay for a bigger Saturday. The bank starts fresh each week, can be reset at any time, and never counts toward your minimum.

Yes, but only when your own data supports it. Once a day Caltide compares the calories you logged with how your weight trend moved. With enough weigh-ins and logged days, it moves your maintenance toward what you actually burn, blended with the formula by how confident the data is and capped so one unusual week cannot swing it far. With too little data, the formula stays and the app tells you so.

Tide is Caltide's built-in coach, an orca. It explains your numbers in plain words, warns you when you eat under your minimum, sends a weekly check-in built from your real figures, and answers questions about your food, weight and activity.

Most calorie trackers judge each day on its own and only warn you about eating too much. Caltide budgets by the week with a calorie bank, warns you when you eat too little, and corrects your goal from your own weigh-ins instead of relying on a formula alone. It shows no ads, including on the free plan.

For adults, the World Health Organization treats a BMI of 18.5 to 24.9 as a healthy range. BMI compares weight with height but cannot tell muscle from fat, so it works best alongside a body fat estimate. Try the free BMI calculator, ideal weight calculator and body fat calculator.

Adults need at least 0.8 g of protein per kg of body weight a day, and people losing weight or training often aim for 1.6 to 2.2 g/kg to hold on to muscle. Caltide starts your protein goal at 2.2 g/kg, capped at 35 percent of your calories, and fits carbs and fat around it. Work out your own split with the free macro calculator.

Yes. Caltide runs on your phone and in the browser, with the same log in both. The phone app can connect to Apple Health on iPhone or Health Connect on Android to bring in steps, workouts, sleep and weight, because health apps only share data with apps installed on the device.