All the vibrating alarm clocks I could find do not sync with your phone, and have to be set manually. I thought about getting an Arduino, but then I will have to build the whole thing by myself. The only logical conclusion I could come up with is to get a programable vibrator. But most of them are either very expensive of look too much like a vibrator (sus).
This is the closest I got: https://www.amazon.com/dp/B09NNFPHXG https://www.amazon.com/dp/B0CD7FPFQ5?th=1
https://www.amazon.com/iLuv-SmartShaker-Vibration-Bluetooth-Notification/dp/B08V6KH3SJ
This says it’s bluetooth with android and apple but I don’t know what the bluetooth connection syncs…