GigaBody: AI Muscle filter

What it does

GigaBody is an AI photo editing app designed for fitness enthusiasts. Its primary function is to apply filters that realistically visualize changes to a person's physique, such as increased muscle mass or reduced body fat. Beyond simple visual edits, the app can analyze these transformations to provide quantitative data, estimating changes in body fat and muscle percentages. It then uses this information to help users set goals and generate an estimated timeline to achieve them.

Where it shines

The app excels at immediately demonstrating its value. The onboarding (00:01-00:24) uses a clean feature carousel with a powerful before-and-after comparison (00:09) to make the core promise clear. Its approach to monetization is also noteworthy. Instead of a hard paywall, it meters free usage with a temporary cooldown timer (00:54), which creates a gentle but persistent nudge to upgrade. Finally, the analysis feature (03:04) cleverly bridges the gap from a fun visual toy to a serious goal-setting tool, providing users with tangible data and a path forward.

UX highlights

Contextual Interface: The editor intelligently swaps its entire preset library based on the subject's gender (01:57), making the toolset immediately more relevant.
Direct Manipulation: The before-and-after slider (03:40) provides a simple and satisfying way for users to compare the original photo with the AI-generated result.
Clear Information Hierarchy: In the analysis section, complex data like body fat percentage is presented cleanly with sliders and clear labels (03:48), making it easy to understand.
Conversational Data Input: When setting goals, the app uses a chatbot-style interface called "GigaGPT" (03:54) to ask for personal details, making the process feel less like filling out a form.
Transient Feedback: The app uses toast notifications and small pop-ups (e.g., "Image saved successfully!" at 01:18) to confirm actions without interrupting the user's flow.

Monetization & growth

GigaBody employs a freemium model with a soft paywall. Core features are available for free, but certain advanced filters are marked as "PRO" (01:01). When a user selects a PRO filter, a paywall appears offering two subscription plans: annual and monthly. A unique aspect is the cooldown timer for free users. Attempting to use free filters too quickly triggers a 30-second waiting period (00:54), creating an incentive to subscribe for uninterrupted use. After a successful action like saving a photo, the app also prompts the user for an App Store rating (01:19), a common growth tactic.

Who it’s for

The app is primarily for individuals interested in fitness, bodybuilding, and personal health. This includes gym-goers looking to visualize their goals, personal trainers creating motivational material for clients, and social media influencers in the fitness space. It also appeals to anyone curious about how their body could look with dedicated training, serving as a powerful motivational tool.

Notes & opportunities

The time-based cooldown for free users is a creative way to meter usage, but it could also be a point of frustration and lead to abandonment if the wait feels too long or frequent. The user interface is exclusively dark mode, which is sleek but offering a light mode could improve accessibility. While the app analyzes the body, asking for user input like age, height, and weight to refine the analysis could make the results feel even more personalized and accurate from the outset.