Data updates within Sellics occur in different cycles for all the different features:
Profit - Live
This data is transmitted by Amazon's MWS API and is live.
Keyword Rankings, Reviews, Spy sales, Salesranks, Buybox status - Daily
This data is crawled daily at night on Amazon. Only for the "Monitored Products".
Product Texts (Title, Bulletpoints, Description) - Daily / After New Order
For all "Monitored Products" this information is updated daily at night. The changes must be visible on the Amazon product page though, which in some cases can take several days.
Within the "My Products" list in the Cockpit, Profit or Inventory this content will be updated as soon as Amazon's API transmits a new order.
Inventory - Daily
Inventory levels are updated live via the orders transmitted to the Profit dashbaord.
There can be minor synchronisation differences for uncompleted orders between Seller Central and Amazon's API though. The actual inventory level is transmitted via the API on a daily basis, so that these differences will constantly be corrected.
PPC Manager - Daily
The main data (ie. sales, costs & co.) is transmitted by Amazon's Advertising API on a daily basis for the day prior to today. This is also why you will never see PPC costs in the Profit dashboard when looking at "today".
New campagins will also appear on the next day - if they already generated impressions.
Changes in Keyword Structures and Bids should be synchronized each hour, at the latest though on a daily basis. It is recommended to make all changes within Sellics though, so that they appear within the Analyze section and Change Log.
Performance - Daily
This data is registered daily from the Seller Central business reports for the day prior to today.
Product Detector - Every 3 Months
This database is usually updated (crawled) every quarter of the year.
Due to highly complex restructuring work on a new international database, this has been postponed for quite some time now and will presumably be updated again in February 2018.