Lightning Bug - Sleep Clock

29.9K reviews
Content rating
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About this app

Lightning Bug
Lightning Bug, ambience and white noise mixer.
Mix some me time! Find sleep and relaxation easier with Lightning Bug, an ambience and white noise mixer for Android powered devices. Lightning Bug features a library of almost 200 sound loops and samples ranging from the natural peace of rain storms and ocean waves, to pure white noise, city trains, meditation bells, acoustic and electronic instruments, and down-tempo break beats.

Lightning Bug also includes many soothing backgrounds and sound visualizations. It even has a stylish, customizable digital clock with alarm, a great replacement for your bedside alarm clock!

For the full Lightning Bug experience, check out plugins. Press the puzzle piece!

Having a problem with sounds and icons disappearing?
The original version of Lightning Bug stored files to a generic folder on your SD card. But in the last year or so various anti-virus and disk utility apps have determined this type of storage is suspect and, in some cases, will automatically delete the contents of Lightning Bug's content folder. So, in our latest release, as of this writing, we moved Lightning Bug's folder into protected app storage on your SD. This will prevent anti-virus and disk utility apps from deleting your icons and sounds.

This means that if you're sounds and icons were already gone before installing, they will still be missing. The update will prevent your sounds and icons from going missing again, but unfortunately you'll have to re-install your plugins one more time. We're very sorry for the inconvenience!

Interested in Beta Testing?
Read our tester guide for more info here:

- Almost 200 sound samples and loops engineered exclusive for Lightning Bug
- Over 50 soothing backgrounds and sound visualizations
- Control each sound’s volume (long press the sound’s icon)
- Plugin-Mode for adding lot’s of high quality new content (look for the puzzle piece!)
- Control each sample sound’s playback frequency (plugin-mode only)
- Customize each scene with whatever sounds you want (plugin-mode only)
- Digital Clock, customize font, color, screen size, and date\time format
- Alarm Clock with customizable Snooze
- Sleep Timer w\ App Shutdown
- Screen Dimmer
- Screen Timeout
- Supports All Screen Orientations (except upside down)
- Disable Device Button Lights

We’ve been lucky to work with some very talented artists willing to contribute their skills to making Lightning Bug better for all. Please check out their sites, show them your support!

Photography by Maria “Jpeg” Izaurralde

Sounds by State Azure
Updated on
Nov 20, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App activity and App info and performance
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

29.3K reviews
Marcella Cypher
August 9, 2020
I've used this app for years off and on, and love it. No excess frills, plenty of loop options for my taste, and full ability to tweak frequency and volume level of each loop individually. The sleep timer is great, though I wish I could disable the screen finger because it overrides my OS screen dimmer, but this is more of a slight inconvenience than a true issue. Keep up the good work devs, and please don't drop support for this app as software evolves. My sleep would suffer greatly.
14 people found this review helpful
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Technica Software
August 10, 2020
Thank you for the review and we'll do our best! 😴, ⚡🐞
Glen Mallory
November 9, 2020
Has been the best white noise app for years. The sound loops are flawless. Many other apps use short samples that have obvious splice points, and the restart or pattern of the loop can be very distracting. You can very rarely notice the looping in Lightning Bug. This allows you to relax and drift off to sleep without distractions. I love combining similar sounds ("rain" or "waterfall") from different sample packets.
7 people found this review helpful
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Technica Software
November 10, 2020
Thank you for the review and for being a long time user. We're grateful to have you! ⚡🐞⚡
Brost Smith
November 28, 2021
I have been using lightning bug for many years. Purchased several of the plug-ins. Great app. I have tried many other sleep sound apps and none have the flexibility of lightning bug. There was a time where the app appeared to be abandoned. Looks like they is new updates recently. There fixed the loop skip, now you need to add more sounds. Definitely enjoy the meditation pack and cubicle pi.
4 people found this review helpful
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Technica Software
November 29, 2021
Thank you for being a long time user! More sounds on the horizon 😉, ⚡🐞

What's new

Local Weather has been removed. Because Lightning Bug's main purpose is not to provide you with local weather, we removed this feature to keep Lightning Bug compliant with Google Play. If you have questions, please contact