Average Book

Features :
+ Easy to use, Clean User Interface
+ No any ads
+ Add/Edit items
+ Calculate Quantity or Volume wise
+ Range wise average calculation
+ Full data backup/restore support in just single file (.abd)
+ Import/Export items as a single file (.abd)
+ Import/Export for easy sharing items between multiple devices
+ Default 2 items auto added for example purpose
[It can editable or removable as you want]

Currently it supports the only 5 items entry for trying this app.
Useful for Manufacturing, Garment, Textile, Traders,... for keeping an average of their products items.