From:
http://www.pokerstars.com/poker/room/prohibited/
"In general, what kind of programs are acceptable?
- Programs (or charts) that simply tell you odds, starting hand recommendations, etc.
- Programs that profile your opponents, but make use of only information which you have accumulated by your own play.
In general, what kinds of programs are prohibited?
- Any program that shares hole card data with other players or programs is colluding, and is prohibited.
- Any program that works off of a central database of player profiles is prohibited.
- Any program that plays without human intervention (a "bot") or reduces the requirement of a human playing. For instance, an "auto-folder" is prohibited."
Based on this, I think such a program would be allowed. Datamining allows you to gain information in games you have not played. Things like ICM and your proposed tool require that you use only information that you personally have observed - they are just fancy calculators. As others have indicated, if you enter garbage hand rankings, you get garbage ICM results.