Hi Amy! You can use sugar free jello in my jellies recipe. I sub it in all the time and it tastes/looks the same to me. Let me know if you can’t find the sugar free grape out there. If it will work for you, I can send you some? Good luckThanks - you preempted a future question. My first stop will be chocolates I think. But gummies of somekind shortly after. I like the purple for gummies... but I’m sure I’ll be hard pressed finding sugar-free purple jello I haven’t started my search yet for the sugar free options ... and I’ll have to check for all sort of other ingredients/additives in there too. I shall report back on my discoveries