The 100 Call Limit
iPhones only save the last 100 calls you make or receive.
Phown enables you to keep track of all calls as long as you import them in time.
To help you out, we estimate the upcoming date of your reaching 100 calls based on your imported data.
Phown can also send you email reminders. They start 2 days before the deadline and end 1 day after. You can turn them On or Off in the Account settings page (they're turned On by default when you sign up).