Design USSD flows that survive real callback rules.

Build menu states, test a live phone-style session, catch CON/END mistakes, watch telco character limits, and export starter handlers for Africa's Talking style callbacks.

0screens in flow
0lint issues
CON/ENDresponse contract
160Safaricom menu limit
Flow Settings

Africa's Talking expects callback responses to begin with CON for continuing menus or END for final screens. This builder validates that shape before you copy code.

Screen Map
Screen Editor
Menu Options
Generated Output