← SleepJournal · All launch news
Launch announcement
SleepJournal Launched on Google Play on September 14, 2026
Google Play launch:
Page added . This is a record of the launch for our news archive, not a press release issued at the time. The date is the first production release of SleepJournal on Google Play.
SleepJournal, a private sleep journal that logs your nights and shows your own trends, became available for Android on Google Play on September 14, 2026. It is made by Sun Engineering LLC.
What SleepJournal does
- Logs bedtime, wake time, sleep quality and daily factors (caffeine, stress, exercise, screen time).
- Shows your own trends and helps with bedtime routines.
- No microphone, no wearable, no cloud, no ads.
- Private on the device, and works offline after activation.
Pricing
SleepJournal requires a subscription: $0.99 per month or $9.99 per year.
Availability
Google Play (Android). The app is also available on the App Store for iPhone.
- Google Play: https://play.google.com/store/apps/details?id=com.sunengineering.sleepjournal
- App Store: https://apps.apple.com/us/app/sleep-journal/id6785271454
- App Store launch news: App Store launch, September 14, 2026
- More information: https://sunnyengineer.com/SleepJournal/
About Sun Engineering LLC
Sun Engineering LLC is an independent developer of privacy-minded apps for travelers, readers and families.
Contact: Henk de Swardt, Sun Engineering LLC — https://sunnyengineer.com
