EquinePassion Calculator
How it came about
While I was actively playing "EquinePassion" during my studies, I kept running into the same problem: I never knew which horses to breed together, because the pool of breeding horses kept growing. The game had no way to compare suitable breeding horses, and a horse's stats (e.g. interior and exterior) weren't shown numerically at all. To compare several horses, I had to lay them all out side by side in browser tabs and weigh them up by hand. With thirty to over a hundred horses per season, that quickly became impossible. The EquinePassion Calculator grew out of exactly this pain point.
Technical development
The calculator reads the pasted profile via JavaScript and converts the text values into scores. Good values are marked green, bad ones red, so you can immediately see whether a foal is worth breeding or better sold.
The second part compares a mare against up to three stallions. Instead of a single fixed grade, a progress bar of up to 100% shows how well each stallion matches the mare, broken down by interior, exterior, and average breeding value. Anyone specifically trying to improve interior can watch that particular bar. Anyone breeding for average simply picks the stallion with the highest overall score.
Individual settings let you additionally define the threshold below which interior or exterior get excluded from a horse's evaluation, which target grade you're aiming for, and whether perfect values should be highlighted. Special abilities that aren't directly visible in the profile are additionally marked with icons, for example when a horse is completely unsuited for an area or exceptionally strong in it.
The calculator runs entirely on JavaScript; the program settings are saved via functional cookies.
Current status
Further development is currently paused, since I don't actively play anymore and would need to be back deep in the game to make meaningful adjustments. Visually, the calculator hasn't been reworked since 2019. Still, Google Search Console shows it's among the most-visited pages on my website. Some players use it for up to two hundred horses per season. It stays relevant for as long as the game exists.