Alternatives
Products that do what Beat Jet Lag does
Free jet lag recovery planner based on circadian science
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After suffering one too many times from bad jet lag, I read a bunch of circadian rhythm papers and developed a simple app to help fight jet lag. I knew that avoiding devices at night was helpful, but it turns out that getting the right light at specific times of day can help not just with jet lag but overall sleep and well being. How it works: you give the app your sleep goal, and then it coaches you by estimating current melanopic light exposure from the iPhone's camera. I validated this against an $1800 lab-grade light meter and was surprised to find it is absolutely close enough for these…
Aug 2026 · impulsearc.com
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Hey HN! Pilots everywhere are required to keep a logbook of all their flying hours, aircraft, airports, and so on. Since I track everything digitally (some people still just use paper logbooks!), I put together some data visualizations and a few 3D globes to show my flying history. This globe is probably my favourite so far: https://jameshard.ing/pilot/globes/all If you’ve got ideas for other graphs or ways to show this kind of data, I’d love to hear them!
2025 · jameshard.ing
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Hi HN! I suffered from chronic insomnia for over a year and tried everything from cutting coffee, blocking blue light, to taking melatonin and antihistamine, but couldn’t find anything that worked. I even bought a $500 research-grade EEG device to track my sleep, which was honestly kind of depressing because it showed that I was sleeping less than 4 hours per night for weeks straight. In the day, it took an immense amount of energy for me to perform even the most mundane of tasks, such as doing my laundry or ordering groceries. At night, I felt an overwhelming sense of loneliness and…
2022 · slumber.one
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I kept trying to explain how important outdoor light is and how most people aren’t getting enough. Eventually I figured that showing is more effective than telling. So we built a free app that uses your Apple Watch or iPhone to automatically track your light exposure throughout the day. It tells you if you’re getting enough, shows you how consistent you are, and rewards habits that support hormone balance. It's in beta on TestFlight, let me know what you think!
2025 · lumehealth.io
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Hi guys, I built a site to solve a couple of my problems regarding sleep, and thought you guys might like it too. It's called WakeMyself, and here's the URL: http://www.wakemyself.com Have you ever overslept despite the alarm and wished "Damn, I wish I could go back in time and tell my stupid sleeping self to snap out of it." That's the basic idea behind WakeMyself. It lets you receive a wakeup call from your yesterday's self. Just leave a message, set an alarm, and you get a call from yesterday's self. Another problem I had: I really wanted to remember my dreams but always forget to…
2012
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I've been working on a side project called Streak.ly with a friend of mine for the past month or so; it's intended to help keep you motivated to do otherwise mundane daily tasks (like do 10 pushups, read for an hour, etc.) by letting you log "streaks" — consecutive days in a row of doing something. It's in private alpha/beta/gamma/whatever right now (has some rough edges to clean up), but is more or less functionally complete and pretty stable. I'm a big fan of the Seinfeld calendar, and have seen other services which do similar things but were unsatisfying to use, either from an aesthetic…
2010
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I kept running into this: timer on my laptop, alarm on my phone, timezone / discord timestamp conversion app in a separate tab. Switching between them was a hassle and I wanted to be able to set them up and manage really fast anywhere I was. So I built Time Keep, it puts world clocks, timers, alarms, countdowns, a stopwatch, breaks, a sleep planner, Discord timestamps, and more into one always open place. Works without an account or signup. All tools are fully functional immediately. Sign in to save your data across sessions. Pro adds live cross-device sync. Shared countdown links show…
Mar 2026
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