Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Calendars by Readdle for iOS App Review
Once again, another calendar app has hit the App Store and is trying to compete against the many others out there, as well as enhance the built-in iOS Calendar app. It is usually the case that any app designed to complement it rather than replace it is successful in doing so and the same can be said for this latest offering. Calendars by Readdle is the latest version of this particular app and it is compatible with the iPhone 5 and iOS 6, although it looks even better on the iPad. It works well either with the iOS app or with Google Calendar and relies on an efficient simplicity that makes it one of the better ones and consequently worthy of your attention. Calendars is available now from the App Store for $6.99.
Simplicity does not imply that the app is limited though. In fact it is about as in-depth as a calendar can be and makes personal planning a much easier task to complete. A nice feature is the way events can just be dragged and dropped into place, something all productivity apps should really do and it is strange that such a simple addition is not more widely available. There is a great search function for finding events and adding them is an easy procedure thanks to a clear layout with an intuitive interface. A feature I particularly like is the SMS text reminders function, which you can set up to text you when an impending reminder is drawing near. It can also be used offline so you don’t need to rely on an internet connection to manage your calendars.
There are flaws however, but they do not ruin it too much. First of all the price tag may put many people off and it is admittedly steep for the nature of the app. But it is not the most expensive app on the market and you will get a lot out of it. If you do a lot of planning this way then it is worth every dime but if you are a casual user of such apps you may just want to stick to the integrated app already on your device. The second flaw will affect the more impatient user and that is the fact that it does take some time to enter the data. Another potential flaw is how fiddly it can be to use on smaller screens but this really highlights how great it is to use on the iPad.
Overall this is one of the better productivity apps but it only really rewards those who pay for it if they plan on using it often. But if you can overlook the price then you will get your money’s worth out of it. Nice to look at and easy to use, this is how organisers should be and it works nicely with the calendar already installed on your device. For best results you should go with the iPad version, although it still works well on the iPhone. Hopefully they will release it for the Mac next.