If you were late by a week from your predicted period start date, is your period usually late for you the next prediction start date even with new cycle data?

Let's say that an app predicted your last period would be the 20th of April but it happened to come the 27th of April instead and your new cycle predicts your next period on May 21st, would you personally be late?

NOTE: It can be any app, not just this one. I personally use <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Period Tracker</a> and my period predictions have matched like clock work until recently. Without change in diet, lifestyle etc...