Is this a good chance?

I just started TTC this month and I am using 3 apps to track ovulation. I have this app saying I ovulated on the 27th, Premom says I ovulated on the 28th and Natural Cycles says I ovulated on the 29th. I got my peak LH on the 27th night and 28th morning. I also measure bbt and haven't had a spike yet. Since I don't know which day I actually ovulated, do you think I have a good chance for this month based on when we BD? I've been tracking my bbt for 9 months now and it's very consistent so I'm confident it will rise, sometimes it's just a few days after my predicted ovulation. I just want to make sure we BD enough and at the right times!