Automatic Numeric Field Increase (without Auto Number)

Automatic Numeric Field Increase (without Auto Number)

Is it possible to have a field (numeric) automatically increase by a set "number", in this case just one (1) everyday without any input from a user and display it on the screen before the user edits/updates?

I've search the forum and all topics for help with this and can't find anything.  

IE. ...... Day1 = Day1 +"1"
if Day1 equaled "10" it would automatically update if I ran the scheduler or "WHATEVER" Zoho has to increase the number before it is displayed on the screen in onLoad.  The field would automatically display "11".

I've looked at all the strings and looked for examples, but can't find the way.  

Am I missing something?

Jeff

P.S. I have been able to update the form using a Custom Schedule, but you have to have the record ID.  Is there a way to do this without needing to express the record ID's?
                input.Past_Due=((input.Past_Due + 1)).toLong();