I'm looking for a similar solution, but I'm more interested device that isn't tied to a particular platform. Integration with an app is not high on my priority list, I just want to wake up without waking up my wife.

So far, the more interesting devices I found are:

- Sonic Alert Sonic Bomb: A digital clock with a bed shaker. I would turn of the extra loud alarm and just use the bed shaker (a vibrating disc you can place under your pillow). Highly rated on Amazon. Link: https://www.amazon.com/Sonic-Alert-SBB500SS-Alarm-Shaker/dp/...

- Shake-n-Wake: A vibrating wrist watch style alarm. It's fairly bulky compared to fitness trackers, but it's quit cheap. Only 3 stars on Amazon, has apparently some quality issues. Link: https://www.amazon.com/Silent-Vibrating-Personal-Alarm-Shake...

- iLuv Smartshaker 2: just a bed shaker, a vibrating disk with sound alarm. You need an app for it though, available for Android or iOS. 3,5 starts on Amazon, so not a clear winner. Link: https://www.amazon.com/Smartshaker-iLuv-Portable-Vibrating-M...

I've tried a Fitbit fitness tracker, but the vibration isn't always strong enough to wake me up. And you have to remember to charge it (enough!) before you go to bed. Just forget the Lifemax 331 Under Pillow Vibration Alarm Clock: it's really crap.

Any suggestions, experiences or recommendations are welcome!