Upgrade to "No advertisement plan" and make the best use of Shift Work Calendar!
Ads that appear on the calendar screen or after certain operations will not be displayed.
You can enjoy a larger screen without being bothered by ads.

You can choose the period of use from 1 month, 6 months, 1 year. The longer the period, the better the price!
It will be automatically continued when the use period expires.
To terminate automatic subscription, please carry out cancellation processing from the setting application referring to this page.
View, change, or cancel your subscriptions (Apple)
Be sure to check the Terms of use before purchasing.
Payment will be charged to iTunes Account at confirmation of purchase
Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
Even after the usage period ends, data synchronized in iPhone Calendar remain. You cannot synchronize a newly registered shift.