31 day cycle ovulation day?

Abbie • 28 👨‍👩‍👦‍👦

Does anyone else have a 31 day cycle and know what day they ovulate? I'm just using this app and the clue app but I've also Googled an <a href="https://play.google.com/store/apps/details?id=com.glow.android">ovulation calculator</a> and it days that I would ovulate 4/5 days after what my apps say? Just hoping to be able to do it as close to the day I can