AI Fitness Coach That Sees/Talks (Impakt) review

What it does

Impakt uses the camera on your smartphone or tablet to monitor your physical movements during exercise. It applies computer vision models to identify your body joints, tracking your posture, range of motion, and repetition cadence. As you move, the software provides audio cues and visual overlays to guide your alignment, aiming to keep your form consistent with standard biomechanical practices.

How people actually use it

Most users deploy Impakt during solo home workouts where they lack the presence of a professional observer. The app functions as an automated mirror. You set up your device, frame yourself within the designated area, and begin your set. If you lean too far forward during a squat or fail to hit a specific depth, the system triggers an alert. Users rely on this for maintaining accountability during repetitive strength training routines. It functions best in well-lit environments where the camera can clearly distinguish the user from the background. By providing immediate data on repetitions and speed, it removes the need for the user to count manually or guess if they have performed a set with sufficient intensity.

Where it falls short

Computer vision is limited by the physical setup. If the camera angle is off or the room is cluttered, the tracking accuracy drops, leading to false positives or missed rep counts. It lacks the nuanced understanding of a human coach. While it can tell if your back is rounded, it cannot explain why you might be experiencing pain or how to adjust your training volume based on your overall recovery state. It also struggles with high-intensity movements that involve rapid transitions or equipment that obscures the body, such as large barbells or complex machine setups. Users expecting it to diagnose underlying health issues or provide comprehensive sports medicine advice will find it insufficient.

Whether it builds skill

Impakt occupies a middle ground regarding user development. Because it forces you to focus on your form in real-time, it acts as a corrective training tool. You become more aware of your proprioception as you learn to respond to the audio cues provided by the software. However, there is a risk of dependency. If the user relies entirely on the app to dictate form, they may fail to develop the internal sense of body awareness necessary to exercise safely without technological assistance. The tool succeeds when the user treats the feedback as a temporary teaching mechanism, gradually learning to internalize the correct movement patterns so they no longer require the app's intervention to perform well.