I believe the alpha-stim runs at .5hz . The BT7 runs at 111.11hz modulated by .5hz . A bit different but results should be similar as both induce relaxation and the BT7 is so much cheaper. There is another modality you can try called Zpoint or Be Set Free Fast/BSFF. You can PM if you want to learn either of those. No tapping with either of them and very easy to learn. I use them when I don't feel like doing EFT. Both excellent for bedtime stress relief.