In the past few years, we have covered plenty of ab trainers here. The Forcefree+ Ab Wheel Roller is also worth a look. It connects to your phone via Bluetooth 5.0 and records your reps automatically. It is designed to handle up to 300kg of load.
This smart ab roller comes with anti-slip handles and stainless steel construction. The handle has a heart rate sensor to give you feedback as you exercise. The companion app comes with voice prompts to help you stay on track.