AI Food Scanner & Calorie Tracker App Template (Flutter)

The Ultimate AI-Powered Diet & Nutrition Tracking Solution for iOS and Android

NutriScan is a highly advanced, premium Flutter application template designed to disrupt the health and fitness market. Powered by Google’s cutting-edge Gemini 2.5 Flash AI, this app allows users to simply snap a picture of their meal and instantly receive accurate nutritional data, including calories, protein, carbohydrates, fat, and fiber.

Whether you are a Beginner looking for a ready-to-publish app to start your passive income journey, or a Pro Developer seeking a robust, scalable foundation built with modern State Management (Provider) and clean architecture, NutriScan is your perfect choice. This source code saves you hundreds of hours uniting AI technology, offline databases, and complex monetization flows into one seamless package.

Designed for Everyone: Beginners & Pros

For Beginners: No backend required! Everything runs locally and connects directly to the Gemini API. Our comprehensive, step-by-step HTML documentation will guide you from changing the app name and logo to generating your final .aab and .ipa files for the Play Store and App Store.
For Pro Developers: Clean code architecture, robust Provider state management, and highly decoupled UI widgets. Integrate your own custom backends, expand the AI prompts, or scale the SQLite database models with absolute ease.

Deep Dive: Core Features Included

1. Instant AI Food Image Recognition

Say goodbye to manual typing and searching through endless food databases. NutriScan uses the Gemini API to analyze food images from the camera or gallery. It automatically extracts the food name, portion sizes, calories, and macronutrients (Protein, Carbs, Fat) in seconds.

2. Smart TDEE & Macro Calculator Algorithm

NutriScan doesn’t just track; it guides. The app dynamically calculates the user’s Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) based on their biological inputs (Age, Gender, Weight, Height) and Activity Level (Sedentary to Very Active). It automatically adjusts their daily calorie limit and sets optimal macro targets (20% Protein, 50% Carbs, 30% Fat).

3. Comprehensive Diet & Hydration Tracking

Users can manage their daily food intake across specific meals: Breakfast, Lunch, Dinner, and Snacks. The Dashboard features gorgeous “Macro Rings” that fill up as the user eats. A dedicated Water Tracker helps ensure users meet their daily hydration goals.

4. 100% Offline-First Architecture (SQLite)

Privacy and speed are paramount. NutriScan uses a robust local SQLite database. Daily logs, historical calendar data, and user profiles are stored persistently on the device. The app functions flawlessly without an internet connection (internet is only required for the AI scan and Ads).

5. Maximum Monetization Ready (AdMob + UMP)

Start earning on day one. NutriScan includes professionally integrated Google AdMob logic to maximize your revenue without destroying the user experience. Crucially, it includes the mandatory Google User Messaging Platform (UMP) consent flow on startup, ensuring you are 100% GDPR compliant and safe from Play Store policy violations.

Adaptive Banner Ads: Neatly anchored to the bottom of the main Dashboard and History screens to provide consistent passive income.
Interstitial Ads: Strategically triggered after specific actions (like saving a new scanned food) with smart interval timers to avoid spamming the user.
Rewarded Video Ads: High-eCPM ads directly integrated into the core loop. Users can watch a short video to temporarily unlock deeper “Micronutrient Analysis” (Vitamins & Minerals) for a scanned food item.
Unlock Premium Feature: Users who dislike ads can seamlessly upgrade via Native In-App Purchases to instantly hide all AdMob layouts and permanently unlock the Micronutrient scanning features.

6. Premium Unlock (One-Time In-App Purchase)

Upsell your users with Native Apple StoreKit and Google Play Billing integrations. The “Premium Member” feature allows users to pay to instantly remove all ads and instantly unlock detailed “Micronutrient Analysis” (Vitamins and Minerals) without watching Rewarded Ads.

7. Premium UI/UX & Native Dark Mode

First impressions matter. The application features a breathtaking, modern Dashboard interface with soft shadows, engaging micro-animations, and glassmorphism elements. It fully supports Native OS Theme detection, seamlessly switching between crisp Light Mode and elegant Dark Mode.

Technical Stack

Framework: Flutter 3.10+ (Null Safety)
Language: Dart
State Management: Provider
Database: Sqflite (Local Relational Database)
AI Engine: Google Generative AI (Gemini 2.5 Flash)
Monetization: google_mobile_ads & in_app_purchase

What You Will Get in the Download

Complete Flutter Source Code for Android & iOS.
Premium Offline HTML Technical Documentation (Step-by-step guide).
Placeholder Assets (Icons, Splash Screens).

NutriScan AI Flutter App Template