Predicted conception percentage

Heather
Hello everyone :-)
​I'm new to this app and I started logging data last month mid-cycle. Looking at the predicted "chances" of ovulating for last month and this month, I only have a high of 30.7%. Is that because there isn't enough data? Do any other women have a higher number?  One other app I used showed a higher percentage rate. 
​I currently log my temps and ovulation monitor... 
​Just wondering! Thanks