A flipabit.dev developer account can be prepared from the start of development - it takes two to four weeks to be verified for authenticity. If you sign up at the last minute, you may miss the scheduled release date. If you've prepared marketing materials and registered a developer account in advance, release time is reduced to two to three days, but even here you need to be safe, because the App Store may return the app for revision, and then the release will be delayed.