I got the Slendertone Connect as it was time for an upgrade and I had my eye on this. They just launched the app on Android and I'm using with my Samsung Galaxy S5. What can I say, brilliant product! Uses a tailoring approach to determine why I want to tone my abs. I choose a fitness programme which I'll incorporate into my weekly routine. I then receive weekly updates as to my progress (how many sessions, the strongest intensity I reach, the average over time). I also get FIT points which I guess is worked out by my sessions and intensity. But the fact is works from my Smart Phone is quite ingenious. I don't think my other belt did that. Factoring in this 'how to get to your goal' experience, its a massive step-up in ab toning belts. So all in all, well worth the change. Highly recommended!!!