Win

Win is a utility app where the date and age calculator handles the kinds of date math questions that come up in real life, questions that a calendar can't easily answer without a lot of counting. The exact age display goes to three levels of precision: not just "34 years old" but "34 years, 7 months, 12 days", the kind of detail that matters when filling out medical forms, school enrollment applications, or any age-gated requirement with a specific cutoff. The date difference feature accepts any two dates you choose and returns the gap between them in days, useful for calculating project timelines, counting days until an event, or figuring out how long ago something happened. The percentage calculator adds financial and everyday math alongside the date tools: four modes cover X% of Y, percentage ratios, increases and decreases, and reverse-percentage lookups, all with instant results. Win is completely offline and requires no registration, the age calculator, date difference tool, and all nine other tools work immediately.