When you first create a Kindara account, you'll be asked to enter your average cycle length. If you entered your average cycle length incorrectly, you can change it anytime during the first two cycles that you use Kindara by logging in to our user web portal (http://app.kindara.com/) with the email and password you used to create your Kindara account, going to the 'Account' tab, and clicking the 'edit details' button at the bottom of the page.
Click the Edit Details button to change your average cycle length
After you've entered at least three cycles in Kindara, the app will calculate your average cycle length based on the data you've entered, rather than the average cycle length you entered at the beginning. So the more you use Kindara, the more accurate it will be :)