Launched this week
When-Done

When-Done

Instantly calculate end times and dates from any duration

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"This movie is 3 hours long — will I be in bed by midnight?" "My visa expires in 45 days — what date is that?" When-Done solves this instantly 🕒 Time Calculator: Add duration to current time. Perfect for movies, cooking, battery charging 📅 Date Calculator: Find future dates for deadlines. Ideal for subscriptions, visa limits & deadlines 🔔 Alarms: Set alerts with one tap 📋 History: Save tasks with labels 🎨 Custom Themes 🔒 Private: No ads, no tracking, no subscriptions. Offline.
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When-Done gallery image
When-Done gallery image
When-Done gallery image
When-Done gallery image
When-Done gallery image
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Launch tags:Android•Productivity•Time Tracking
Launch Team / Built With
Flowstep
Flowstep
Generate real UI in seconds
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What do you think? …

Jasper Brekelmans
Maker
📌
Hello Hunters! The inspiration for When-Done came from a simple frustration: Why is adding hours to the current time so complicated on a phone? I was tired of doing mental gymnastics late at night trying to figure out if I could squeeze in a 3-hour-17- minute movie before bed, or counting weeks on a calendar to figure out visa limits for my travels. When I looked for existing tools, I found they were either clunky or filled with friction. I didn't want to create an account or watch an ad So I decided it was time for something simple with instant results and no strings attached. I’d love to hear your feedback or any specific use cases you might have for it! P.S. This is a paid app, but I want the Product Hunt community to try it for free. Drop a comment below if you want a promo code, and I'll DM one to the first 20 people! (Android / iOS / MacOS)