SAT/ACT
I'm pretty sure that you can not use programs on your calculator.
For the ACT, it explicitly states your programs have to be removed prior to taking the test.
https://www.act.org/content/dam/act/unsecured/documents/ACT-calculator-policy.pdf
For the SAT, I couldn't find an equivalent document that forbids that as well.
I would check with College Board to see if they allow something like this.
Good luck.
I don't think you can use programs on your calculator for the ACT, but you definitely can for the SAT! The College Panda has made a short video series on calculator tricks and programs that I find useful: https://thecollegepanda.com/sat-math-calculator-video-series-for-the-ti-84/
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