Ava bracelet

Hi ladies, can you please share your experience with the Ava bracelet? Is it worth it? My husband and I have been trying for baby #2 for 15 months with no luck. I am contacting my doctor Monday to hopefully finally see a fertility specialist and my husband will be having his sperm tested. Just wondering if it’s worth purchasing. I’ve only been using opk’s, bbt as I find it difficult to track since my daughter wakes at night and my sleep isn’t the greatest.

Thank you in advance!