Following our review of ovulation apps yesterday, we have been kindly approached by Dynadel the publishers of Ovulation Calendar to givaway some of their apps. As our loyal readers know, if you’d like to get hold of one of these apps, just reply to this post telling us what you love most about theappwhisperer.com and not forgetting to retweet and join our Facebook page, that’s it. The Ovulation Calendar helps you determine your fertile days of the month, so you can either achieve or avoid pregnancy. The calendar is based on the date of your last period, the average Period Length and the Luteal Phase. With this information a chart…