There is a Google docs spreadsheet that does what your activity fields sound like they are doing. Admittedly a bit more labour intensive initially in terms of setup & learning but perhaps also more flexible & more widely informative to justify that. But as @MedTechCD says it can lead to over cooking yourself as my screenshots show comparing my current sustainable CTL tolerance (70ish) with my 2021 lunacy (130ish), fun as it seemed at the time.
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