Viewer Edition has the same function as the Renewal Edition. In Viewer Edition, more than 10 events cannot be registered. You can check the operation before purchasing a Renewal Edition.
In Free Edition, more than 50 items cannot be registered, and ADs are displayed.
Q. Database does not exist or there is inconsistency
A. The database file on iCloud may not be synchronized with the database file on the device.
Please try the following method.
Synchronize (download) the database file using the Files App.
Launch the Files App. Select the MyInventory folder. If there is a download mark on the right side of data, it hasn't be synchronized.
Tap it to download. When finished, close the Files App and restart My Inventory.
There are also the following methods. Reinstall My Inventory
Reinstall the App to fix it. The data is saved in iCloud, the data will not be deleted even if you delete the App.