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Best Calorie Deficit Diet App

250+ iOS apps curated and reviewed

4.8 avg rating
19 free apps
Updated September 2026

If you already know Formula － weight loss diet app, this is the deeper bench. 250+ calorie deficit diet app for iPhone, all reviewed and ranked by user rating, recency, and download trend as of September 2026.

Compare top Calorie Deficit Diet App (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Formula － weight loss diet appFormula － weight loss diet appFree4.5★ (34K)NoYesSep 2026
2Deficit: Calorie CounterDeficit: Calorie CounterFree5.0★ (4)NoNoSep 2026
3MyFitnessPal: Calorie CounterMyFitnessPal: Calorie CounterFree4.7★ (2.4M)YesYesSep 2026
4Calorie Deficit CalculatorCalorie Deficit CalculatorFree4.7★ (3.7K)NoYesSep 2026
5Lose It! – Calorie CounterLose It! – Calorie CounterFree4.8★ (776K)YesYesSep 2026
6FlexiFact: Calorie Deficit AppFlexiFact: Calorie Deficit AppFree—YesYesMay 2026
7Kcalz: AI Calorie CounterKcalz: AI Calorie CounterFree was $4.99—NoYesJul 2026
8CutWatch: Calorie DeficitCutWatch: Calorie Deficit$0.99—NoNoJul 2026

Top Picks for Calorie Deficit Diet App

Formula － weight loss diet app#1

Formula － weight loss diet app by FJOR NUTRITION, INC.

Anti-Inflammatory, Cortisol
Editor's Choice
💪 Health & Fitness
4.5😐(34K ratings)
FreeIn-App Purchases
Formula － weight loss diet app screenshot 1
Formula － weight loss diet app screenshot 2
Formula － weight loss diet app screenshot 3
Formula － weight loss diet app screenshot 4
Formula － weight loss diet app screenshot 5

This app guides you through various specialized diets like Carnivore, Mediterranean, Anti-Inflammatory, and Cortisol Detox. It offers recipe libraries, meal tracking via voice or barcode, and expert support to help you achieve your health goals.

What We Love

  • 💰 Cost-effective
  • 🚀 Easy to use
  • 📊 Helpful tracking features
  • 🍔 Useful recipes and meal ideas
  • 👍 Customized plans
  • 🤖 Automated logging and calculations

Room to Improve

  • 🐛 Buggy and glitchy
  • 💰 Overpriced
  • 🤔 Lack of personalization
  • 🔍 Limited food database
  • 📉 Ineffective for weight loss
  • 🔒 Difficult to cancel subscription
Deficit: Calorie Counter#2

Deficit: Calorie Counter by Deficit App LLC

Calorie Deficit Tracker
Strong Contender
💪 Health & Fitness
5.0(4 ratings)
Free
Deficit: Calorie Counter screenshot 1
Deficit: Calorie Counter screenshot 2
Deficit: Calorie Counter screenshot 3
Deficit: Calorie Counter screenshot 4

This app calculates your precise daily calorie deficit needed for weight loss based on your personal stats and wearable data. It tracks your meals and calories burned against this target, adjusting automatically as you progress. It offers a data-driven approach to achieving your weight goals.

MyFitnessPal: Calorie Counter#3

MyFitnessPal: Calorie Counter by MyFitnessPal, Inc.

Workout & AI Nutrition Tracker
Worth Considering
💪 Health & Fitness
4.7😐(2.4M ratings)
FreeAdsIn-App Purchases
#1in Health & Fitness
MyFitnessPal: Calorie Counter screenshot 1
MyFitnessPal: Calorie Counter screenshot 2
MyFitnessPal: Calorie Counter screenshot 3
MyFitnessPal: Calorie Counter screenshot 4
MyFitnessPal: Calorie Counter screenshot 5
MyFitnessPal: Calorie Counter screenshot 6

This AI-powered app helps you achieve your health and fitness goals by tracking calories, macros, and water intake. It offers a comprehensive food database, workout logging, personalized goals, and meal planning to monitor your progress.

What We Love

  • 💪 Effective for weight loss/healthy eating
  • 🔍 Extensive food database
  • 📊 Helpful tracking and progress features
  • 🤝 Social features and community support

Room to Improve

  • 🐛 Buggy and glitchy app performance
  • 💰 Aggressive push for premium subscription
  • 📋 Inaccurate food data and calculations
  • 🔒 Privacy concerns with data sharing

More Calorie Deficit Diet App apps to explore

FAQ about Calorie Deficit Diet App

What is the best calorie deficit diet app for iPhone?
Formula － weight loss diet app tops our calorie deficit diet app ranking as of September 2026, with a 4.5-star average from 34K App Store ratings, and it's free to download.
Yes — 19 of the top calorie deficit diet app we rank are free to download, including Formula － weight loss diet app and Deficit: Calorie Counter.
Formula － weight loss diet app has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ calorie deficit diet app on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app serves as a guide and nutrition tracker for specialized diets including Carnivore, Mediterranean, Anti-Inflammatory, and Cortisol Detox. It provides recipes, diet tips, and expert guidance to help users achieve their health and fitness goals.
Key features include an automatic nutrient calculator for macros, a food journal with voice recognition and barcode scanning, a nutrition tracker for essential nutrients, an extensive recipe library, a grocery list generator, expert coach support, and integration with Apple Health for tracking water intake, steps, sleep, and weight loss.