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Shift Calendar & Alarm
A shift-worker's calendar that starts blank, not full
Shift Calendar & Alarm is a calendar built for people whose days off change every week. Instead of a fixed monthly grid, you start from a blank calendar and add only your shifts - the calendar builds itself around your actual schedule. Every shift can have its own alarm, including cross-midnight shifts (22:00-06:00). Alarms ring even when the app is closed. Public holidays for 10 countries, payday highlighting, and anniversaries are all built in. Free, offline, no account required.
Hi Product Hunt,
I'm a solo developer from Japan. I built Shift Calendar & Alarm because most calendar apps assume you work a normal Monday-to-Friday schedule - and if your days off move around every week, that assumption gets in the way more than it helps.
So the whole app starts from nothing. You open it, and it's blank. You add your shifts, one at a time, and the calendar grows around your actual schedule instead of the other way around.
A few things I put real work into:
- Every shift can carry its own alarm, including cross-midnight shifts (22:00-06:00). Alarms ring even with the app fully closed.
- Public holidays are calculated for 10 countries, in 10 languages, without any external data file.
- Payday tracking and anniversaries live right on the same calendar, so you can see at a glance if a shift lands on a day it shouldn't.
- No account, fully offline, and every bit of data - shifts, alarms, settings - stays only on your device.
It's free, with a small banner ad.
I'd love to hear from anyone with an irregular schedule - nurses, factory shift workers, retail, hospitality: what does your current calendar setup look like, and what's still missing from it?
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About Shift Calendar & Alarm on Product Hunt
“A shift-worker's calendar that starts blank, not full”
Shift Calendar & Alarm was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #122 on the daily leaderboard. Shift Calendar & Alarm is a calendar built for people whose days off change every week. Instead of a fixed monthly grid, you start from a blank calendar and add only your shifts - the calendar builds itself around your actual schedule. Every shift can have its own alarm, including cross-midnight shifts (22:00-06:00). Alarms ring even when the app is closed. Public holidays for 10 countries, payday highlighting, and anniversaries are all built in. Free, offline, no account required.
Shift Calendar & Alarm was featured in iOS (110.6k followers), Productivity (658.2k followers) and Time Tracking (11.8k followers) on Product Hunt. Together, these topics include over 193.6k products, making this a competitive space to launch in.
Who hunted Shift Calendar & Alarm?
Shift Calendar & Alarm was hunted by Tomohiko Saitoh. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Tomohiko Saitoh