The interactive bag from Growl allows you to hit your boxing coach.
Learn to box without getting hit.
Growl is a new startup that has developed a wall-mounted fitness device that combines projectors and sensors to offer the experience of a life-sized boxing trainer to train with. Unlike other interactive trainers like the Lululemon Mirror or Tonal, Growl's device encourages physical interaction, as its screen also functions as a real punching bag that can be hit.
However, like other smart home exercise equipment, its price is considerably high. Unlimited family access is expected to start at $150 per month with a 48-month plan, or $190 per month for 36 months when reservations open in April 2025. This translates to a cost of $7,200 for four years or $6,840 for three years, which is comparable to the cost of a Peloton Tread Plus, totaling $7,407 over four years, including monthly payments. Similar to Peloton's hardware, the user will own the Growl after the subscription period ends.
Growl uses projectors instead of LCD or OLED screens, allowing for larger and more immersive viewing experiences without increasing the device's size. While the design is considered "compact like a wall shelf," it remains relatively out of the way. Information about progress and other useful metrics is projected onto surrounding walls. Additionally, its main screen, which is actually half of a punching bag and supposedly offers resistance comparable to that of a traditional bag, displays a life-sized virtual trainer that makes the workouts more engaging.
The device is capable of accurately detecting when and where it is hit thanks to a series of infrared sensors that turn its flexible surface into a large touchscreen. Several strategically positioned cameras record movement in 3D and provide real-time feedback through artificial intelligence analysis.
Users can train with the virtual trainer, who shows them where and how to throw punches, or participate in interactive fitness games, including one that resembles Beat Saber, where they must hit a series of approaching targets. Beyond simply tracking exercise time or calories burned, Growl also suggests ways to improve technique and posture, allowing practice from home without the risk of getting hit.