Ifertracker or fertility smart conceive?

[Farmwife17]

My husband and I have been ttc for 16 mths with no luck. We have been referred to a fertility specialist but it might be a few months before we get in yet. My cycles have been from 27-39 days so it’s hard to know exactly when I’m ovulating. I’m debating between ordering ifertracker to measure bbt so I have a better idea when I’m ovulating or fertilitysmart conceive to help regulate hormones and hopefully have more regular cycles. Any advice as to which I should try first?