RFO-Basic Manuals


Most of my Android apps are written in RFO-Basic. It is available at the Android Google Play store (check out the links at the bottom of this page).
Note that this Basic interpreter has been called by different names, such as RFO Basic and Basic!.

Although there is an official manual available, it is somewhat dated, it has some errors, and (in my opinion) is somewhat difficult to navigate.
Therefore, I rewrote it into two manuals which I am sharing with you.

The first, and most important, manual is my Basic Language Reference. It contains all of the commands and functions, organized into self-contained chapters, in alphabetic order.

The second manual is my Basic User Manual which contains lots of background information.

Basic's Using$ function gives your programs access to the Formatter class of the Android platform. Although you can find full documentation at here, I wrote a manual for it appropriately called Formatter.

There is a more modern version of RFO-Basic, called OliBasic, developed by one of the most accomplished Basic gurus around. You can find him at the RFO-Basic forum under the name of "aFox". He has graciously provided me with OliBasic documentation that I am in the process of incorporating into the OliBasic Reference and the OliBasic User Manual.


You can download my manuals here:
Version Title Download
2023-09-05 Basic Language Reference Download here
2023-04-13 Basic User Manual Download here
2021-03-01 Formatter Download here
2024-04-18 OliBasic Reference Download here
2024-04-13 OliBasic User Manual Download here



Please help support our development efforts by donating here:



Hope you enjoy using my manuals!