We also offer aCalendar and aCalendar+ on Amazon App Store amazon.com amazon.co.uk amazon.ca amazon.fr.
Due to policy restirictions by Amazon and limitations of the Amazon Fire OS, there may be slight variations in the version published on Amazon Apps store.
We push updates to Amazon App Store and Google Play, but due to differences in the update/rollout process in the two stores, the updates are not always simultaneously.
For help with Amazon App Store please see Amazon's Help and Customer Service for Amazon App Store.
If Amazon App Store does not update or install the app correctly, try logging out and logging in again, or reinstall the Amazon App Store app.