Best Calorie Deficit App: Stay in a Deficit Without Guessing
A calorie deficit is the gap between two estimates, what you eat and what you burn. Six apps compared on both: PlateLens and MacroFactor learn your expenditure every week from your logs and weigh-ins, while MyFitnessPal, Lose It!, Cronometer and FatSecret set a target from your profile. Free plans, US prices, platforms and the calorie error the Dietary Assessment Initiative measured, side by side.
Best Carb Counter Apps for Low-Carb and Keto, Compared
Carb Manager is built for keto, with net carbs and barcode scanning free and photo and voice logging in Premium; Cronometer counts net or total carbs from a curated, lab-analyzed database; MyFitnessPal logs from 20.5 million foods, with net carbs in Premium in the US and Canada; Senza is a free keto and fasting app for iPhone and Android; Lose It! puts a calorie budget first, with carb goals in Premium. PlateLens, our pick overall, counts the carbs on your plate from a photo, your voice or a sentence, without weighing. Plus how many grams make a keto or low-carb day, and what net carbs subtract.
Best Food Scanner Apps (2026–2027): Scan Meals, Barcodes and Labels
“Food scanner” covers three jobs: Yuka and Fooducate grade a packaged product from its barcode, barcode loggers pull a label into a food diary, and meal scanners estimate a plated meal from a photo. PlateLens scans the plate, the barcode and the nutrition label into one calorie and macro diary; Yuka is the pick for grading groceries; Cal AI, SnapCalorie, MyFitnessPal and Lose It! are compared on what they scan, free plans, prices and platforms.
Best Food Tracker Apps (2026–2027): Food Diary Apps Compared
A food diary works only while you keep it, so we compared eight food tracker apps on what one meal takes to log, what each free plan holds back and the US price. PlateLens is our pick for most people: a photo, a sentence or a barcode per meal, corrections in plain words, and a free plan that never expires. MyFitnessPal suits a 20.5-million-food database, Cronometer detailed vitamins and minerals, Lose It! a simple weight-loss budget, FatSecret a free diary with a community, MyNetDiary an ad-free free plan, Yazio recipes and fasting, and MacroFactor paid macro coaching.
Best Intermittent Fasting Apps (2026–2027): Free and Paid, Compared
Zero and Fastic keep a fasting timer free and charge for photo meal logging, BodyFast’s coach writes a new fasting plan every week, Simple coaches you without calorie math, Fastient was last updated in 2019 and LIFE Fasting Tracker is no longer on the US App Store. Compared on free plans, US App Store prices and platforms, with what trials found when an 8-hour window was added to the same calories; PlateLens times the fast and counts what you eat in the window in one app.
Best Macro Tracker Apps (2026–2027): Free and Paid, Compared
MacroFactor coaches your macros weekly with no free plan, Cronometer keeps gram targets free on a curated database, MyFitnessPal and Lose It! keep custom macro goals or macro tracking in Premium, Carb Manager counts net carbs for keto and MacrosFirst sets free per-meal goals. Compared on free plans, prices and logging, with PlateLens best overall: protein, carbs and fat from a photo or a sentence, targets that move with your calories and a weekly adaptive target, free, plus a ±1.1% calorie error on 180 weighed meals in the Dietary Assessment Initiative’s study.
Best Time to Weigh Yourself (and How Often): Why Your Weight Fluctuates
The best time to weigh yourself is first thing in the morning, after the bathroom and before food or drink, in the same clothes on the same scale. How often to weigh and what the trials found, why morning weight swings about 0.5 kg a day with glycogen water, salt, gut contents, the menstrual cycle and a Monday-high, Friday-low weekly rhythm, and how to read the 7-day average instead of a single morning.
Best Water Tracker Apps: Count Your Drinks and the Water in Your Food
WaterMinder counts water, coffee, tea and caffeine on iPhone and Android, Waterllama and Plant Nanny make drinking a game, Water Reminder by VGFIT sends interval reminders, Hydro Coach syncs Android health apps and Apple Health keeps it all free on iPhone. Compared on reminders, Apple Watch, free plans and US prices, plus the water in your food: about 20% of what you take in, per the National Academies, which PlateLens counts as its own source.
Best Weight Loss Apps (2026–2027): Free and Paid, Compared
WeightWatchers runs a coached Points program with no free plan, Noom teaches daily psychology lessons, MyFitnessPal searches 20.5 million foods, Lose It! keeps a simple calorie budget, MacroFactor adjusts macros at weekly check-ins and Simple coaches fasting. Compared on free plans, October 2026 prices and how each sets your calorie target, with PlateLens as the best overall pick: the lowest average calorie error in the Dietary Assessment Initiative’s 180-meal study, and a free target that learns from your weigh-ins.
Free Sugars, Synced Macros and Your Meal Times
Understand free sugars, keep calorie and macro targets aligned, and set meal times that fit your day. See what changed in PlateLens.
Most Accurate TDEE Calculator? 3 Ways to Find Your Real TDEE
No TDEE calculator measures you: almost all of them run a published equation, usually Mifflin-St Jeor, and multiply it by an activity factor you pick, from 1.2 to 1.9, so one 1,650 kcal resting estimate becomes anything from 1,980 to 3,135 kcal a day. The three ways to find your real TDEE, from a formula to a measured resting metabolism to your own food log and weight trend, and how to read the last one by hand or have it learned every week.
Best Alcohol Tracker Apps (2026): Free and Paid
Reframe and Sunnyside run paid cut-back programs with no free plan, Try Dry and DrinkControl turn each drink into units or grams, I Am Sober counts sober days and MyDrinkaware counts UK units. Compared on free plans, US prices and platforms, plus why grams travel better than “drinks”: a US standard drink is 14 g, a UK unit 8 g.
