209+ iOS apps curated and reviewed
The best 21 day body transformation apps on iPhone average 4.3★ across 209+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 2.6★ (5) | Yes | Yes | May 2026 |
| 2 |  | Free | 4.4★ (1.2K) | Yes | Yes | Jul 2026 |
| 3 |  | Free | 4.4★ (131K) | No | Yes | Jul 2026 |
| 4 |  | Free | 4.5★ (9.4K) | No | Yes | Jul 2026 |
| 5 |  | Free | 3.0★ (2) | No | Yes | May 2026 |
| 6 |  | Free | 4.8★ (1K) | No | Yes | Jul 2026 |
| 7 |  | Free | 4.7★ (509) | No | Yes | Jul 2026 |
| 8 |  | Free | 4.7★ (5.5K) | Yes | Yes | Jul 2026 |
This program offers a 3-week fitness plan with daily bodyweight workouts to help users lose fat and build strength. It's designed for home use and requires minimal daily exercises.
This app offers personalized weight loss, maintenance, and muscle gain plans with custom meal plans, grocery lists, and macro tracking. It features thousands of workouts with modifications, hydration and step tracking, and smart troubleshooting for plateaus.
This fitness app creates personalized workout plans and meal plans to help users achieve their fitness goals, whether it's gaining muscle, losing weight, or getting shredded. It offers a variety of workout styles, video tutorials, and motivational features to make fitness accessible and enjoyable.
This app offers a comprehensive suite of AI-powered tools to digitally enhance your photos. Easily retouch your face and body, add or modify features like abs, tattoos, and accessories, and transform your appearance in minutes.
This app offers bodyweight workouts designed by a fitness coach to improve fitness and health. It provides structured routines, custom workout creation, and detailed progress tracking to help users achieve their fitness goals at home or anywhere.
This app analyzes your body composition by asking a few questions and taking front and side photos. It provides actionable insights to help you achieve your fitness goals faster. Understand your body better and take control of your health journey.
This app helps users track their progress on a 21-day program. It allows for easy logging of containers, water intake, exercises, and body measurements. Visualize your journey with progress graphs and access an approved food list.
This app offers a comprehensive suite of AI-powered photo editing tools specifically designed for men. Enhance your appearance with features like face retouching, beard and hairstyle design, and skin smoothing. Easily remove or change backgrounds, add tattoos, and experiment with various filters and accessories to create stunning portraits.
Record and track family weight data with a smart scale. Visualize progress with charts and reports, and sync with Apple Health. Supports up to 24 users for comprehensive family fitness monitoring.
Transform your photos with professional retouching services. Submit your selfies and pictures, and experienced designers will edit them using Photoshop techniques. Receive expertly retouched images quickly for sharing online or with friends.
This app helps you achieve your dream body by tracking your progress through body scans and AI-powered nutrition and training recommendations. It provides detailed insights into body fat, lean mass, and physique changes, adapting to your progress over time.
Achieve a toned and sexy body with quick, 5-minute daily workouts designed for women. No equipment or gym needed. Follow professional coaches for targeted exercises to sculpt your belly, butt, legs, and arms.
Track your fitness progress by measuring and monitoring your body shape using your iPhone's camera. Get precise measurements in inches or centimeters for all body parts and muscle groups, and compare your physique to averages. Stay motivated and achieve your body goals with this scientifically backed technology.
This app offers professional photo editing services performed by real designers. Submit your photos and specify desired edits, such as body slimming, muscle enhancement, or facial retouching, and receive processed images within minutes. The service operates 24/7 for your convenience.
This app helps you monitor your physical transformation with photo and measurement tracking. Visualize your progress with side-by-side comparisons and detailed charts. Securely back up all your data to iCloud to ensure your journey is never lost.
Easily enhance your appearance with a body and face photo editor. Reshape features, slim your waist, lengthen legs, add muscles, and adjust weight with simple slider controls. Transform your photos without needing editing expertise.
This app uses 3D body scanning to provide detailed body measurements and track fitness progress. It offers AI-powered nutrition logging, posture assessment, and clothing size recommendations to help users achieve their health and transformation goals.
This app uses a 3D body scanner to provide detailed body composition analysis, including body fat percentage, girth, and volume measurements. Track your progress visually with 3D comparisons and heatmaps, and receive personalized feedback to achieve your fitness goals.
Easily slim and reshape your body in photos with intuitive tools. Enhance curves, add muscle definition, adjust height, and even apply tattoos or a natural tan. Achieve your ideal body look in just a few clicks.
This app supports an 8-week health and body transformation system, offering features to manage your profile, set goals, track product regimens, and connect with a community. It provides daily motivation and showcases transformations and testimonials.