Changelog

Thank you for choosing Smart Sleep! We’re constantly making changes and improvements to enhance your experience. To stay updated with the latest features and improvements, please keep your updates turned on.

0.5.4 (260127.245.nsc)

Introduced Dream Screen — our new exclusive feature for Plus users!
“Keep screen on while playing” has been integrated into Dream Screen and now only works when Dream Screen is active.
Fixed the bug where the “Gradually increase volume” alarm option was always enabled.
Various UI enhancements, refinements, and small tweaks throughout the app.

0.5.3 (260104.240.nsc)

Settings improvement: Added a new floating button to scroll to top
Sound screen improvement: New background color + added author credit text
Time picker improvement: Now remembers your last chosen input mode
Minor UI improvements.

0.5.2 (251231.239.nsc - Last update of 2025)

Fixed: App crashing when updating from older versions.
Fixed: Alarms not working after an automatic update via the Play Store.
Implement various UI improvements and tweaks.

0.5.1 (251213.236.nsc)

Fixed issue where Sleep Sounds service sometimes ran longer than intended.
All 4 new collections are now available to all users, exclude extra songs.
Channels and “High” Quality options for audio recording are now available to all users.
Improved stability of Alarm and Nap services.
Minor UI improvements.

0.5.0 (251130.234.nsc)

Added 4 new sleep music collections (more to be added soon).
All “white noise” sounds are now available to all users.
Added a “Volume booster” option, exclusive to Plus users.
Added new filter chips for settings; you can now find options faster.
Improved playback performance and the user interface.

0.4.9 (251108.229.jasu)

Fixed keyboard focus for the “Rename” option.
Added the “Reminder notification” option, available to all users.
Added the “Enable live preview” option, exclusive to Plus users.
Improved the alarm: now you can tap the alarm time directly.

0.4.8.2 (251004.227.bgw)

New design for the audio recorder.
Improved sound picker experience: it now scrolls to the selected sound properly.
Improved time picker experience, with a new option to select time by typing.

0.4.8.1 (250912.225.bgw)

Improved visibility of Play/Start buttons and alarm day selection.
Improved Gentle Wake stability.
Improved performance and stability.

0.4.8 (250901.223.bgw)

Fixed: Language switching not working on older Android versions (Android 12 and below).
Fixed: App crashing when updated from very old versions.
Fixed: App crashing when opening set/edit alarm sheet due to invalid default alarm sound.
Fixed: Sleep Sound and Nap running indefinitely due to countdown failure.
Fixed: Sleep Sound and Nap notifications persisting after completion.
To enhance performance, Sleep Sound and Nap Timer now display only general time remaining.
Optimized performance and stability.
Improved UI and color schemes for various components.
Added “Gentle Wake” feature, a soothing and gradual alarm experience (Beta).

0.4.7.5 (250723.216.m3e)

Fixed: Inaccurate day translation for Chinese, Japanese, and Korean.
Fixed: Incorrect theme color preview on older Android versions.
Added: New “Tropical Paradise” theme for all users.
Added: New settings options for Plus users.
Improved: Audio recording performance and stability.
Updated: “Smart Sleep” is now default label for system alarm.
Consistently enhance and refine the user interface.

0.4.7 (250706.215.m3e)

Fixed: App crashes when performing certain actions on older Android versions (Oreo, Pie).
Fixed: Audio recording failing to resume after a pause (beta, not stable).
Updated: All users can now adjust recording quality (low and medium).
Added: A new button to quickly calculate bedtime or wake-up time in result screen.
Improved: Various UI elements and animations to align with the new Material 3 Expressive style.
Improved: Haptic feedback for various actions, with support for older Android versions (Oreo, Pie).

0.4.6 (250531.210.rec_haiten)

New (Beta): Record custom audio for sleep sounds! Available to all users, more settings for Plus users.
Implemented various UI improvements and tweaks.

0.4.5.2 (206)

Fixed: A crash caused by an invalid alarm sound. “A Chirping Bird” is now the default alarm sound if none available.
Fixed: In-app browser infinite height issue.
Implemented a new notification that reminds you to unlock the phone after a reboot for alarm’s functionality.
Implemented a new alarm notification when an alarm fails to trigger.
Implemented various UI improvements and tweaks for large screen devices.

0.4.5.1 (204)

Fixed: a crash caused by the “Gradually increase volume” alarm option (yet another issue of alarm 🥲).
Implement various UI improvements and tweaks.

0.4.5 (203)

Calculator tab is now Sleep tab.
A new button for quick bedtime/wake-up time calculations in sleep results (Plus only).
Enhance sound preview and playback performance.
Implement various UI improvements and tweaks.

0.4.4 (200)

Introduce a new feature for Alarm: Require long press.
Enhance user experience: You can now undo alarm deletions.

0.4.3.3 (198)

Enhance the selection of cycle length options.
Refine the display of language choices.
The maximum and minimum sleep cycle display options are now accessible to all users.

0.4.3.2 (196 - Last update of 2024)

Fixed: “null” title of custom sound files (Plus users only).
Minor UI tweaks.

0.4.3.1 (195)

Fixed: wrong app version format.
Fixed: play sound button size on big display/font scale.
Fixed: app crashes occurring in rare situations due to alarms (yet another issue ☹️).

0.4.3.0 (194)

Overhaul the Sound screen UI.
Introduce 2 new theme colors (Plus only): Hope \& Dream.
Add a new feature (Plus users only): Now you can add sound files directly from your phone’s storage.

0.4.2.8 (187)

Introduce a new option: Now you can switch views in the Sounds Selection screen.
Implement various UI improvements and tweaks.

0.4.2.7 (185 - Hotfix)

Fixed: “Swipe to delete” option has not been working properly.
“24-Hour format” option now works with Alarm notification screen.

0.4.2.7 (184)

Add a new setting option for alarm: Swipe to delete.
Add a long-awaited setting option: 24-Hour format.
Minor UI improvements.

0.4.2.6 (181)

New language picker UI.
Officially support Android 15.
UI improvements and tweaks.
Improve user experience.

0.4.2.5 (175)

Fixed: app crashes occurring in rare situations due to alarms.
UI improvements and tweaks.

0.4.2.4 (172)

Fixed: weird color of status bar in few cases.
Performance and UI improvements.

0.4.2.3 (170)

Improve alarm: new snoozed alarm notification and ability to dismiss snoozed alarms.
New “clear cache” option for in-app browser.
UI improvements and tweaks.

0.4.2.2 (167)

New sleep sound: Bubbles (Plus only).
List of free sounds and premium sounds have been changed.
Sleep sound notification now shows sound name and remaining time.
Change stop timer items, maximum 120 minutes.
Following notifications are now visible on lock screen publicly: Sleep sound, Nap and Alarm.
“Play preview of sleep sound” option is now available for all users.
New “+5 minutes” option for stop timer.
UI improvements and tweaks.

0.4.2.1 (161)

Fixed: UI on big display/font scale.
New alarm option: swipe left to delete alarm.
Minor UI tweaks.

0.4.2 (159)

Improve alarm: add label, gradually increase volume option.

0.4.1.1 (156)

Fixed: missing sleep timer on big display/font scale.
New “Never” option for sleep timer.
Minor UI changes, improve user experience.

0.4.1 (152)

New sleep sound picker UI.
New theme picker UI.
New now playing UI.
Improve user experience.

0.4.0 (149)

Minor UI changes
Update translation.
Add more haptic feedback actions.
Add a new setting option (Plus only).
Add new free sleep sounds: Lightning, Howling wind.
Add new Plus sleep sounds: Pencil, Crickets and frogs.
Improve user experience.

0.3.9.9 (143)

Update translation.

0.3.9.8 (137 - 141)

Fixed: App crash if stopping sleep sounds from notification.
Fixed: incorrect color preview of “Dynamic” theme color (Android 12+).
Add a new setting option.
Support Predictive Back Gesture (Android 13+).

0.3.9.7

New theme picker screen.

0.3.9.1 - 0.3.9.6

Minor changes.
Improve user experience.

0.3.9

New sleep sounds selection screen.
New set/edit alarm and alarm screen.
Improve user experience.

0.3.8.1 - 0.3.8.2

Nap (Plus only): increase maximum nap time to 100 minutes, now you can choose Do Not Disturb type.
Improve user experience.

0.3.8

Remove all ads in app.
Add notification setting option.
Improve alarm notification screen.
Fixed: Triggered alarms are enabled after a system reboot.
Fixed: Changing the stop/snooze time can cause the app to crash in a rare case.

0.3.7.9

Add ‘Alarm volume’ setting option.
Improve Sounds tab.

0.3.7.7

Fixed: a display bug of Sounds screen.
Improve user experience.

0.3.7.6

Add Halloween theme.
Alarm screen’s theme should now follow app theme.

0.3.7.5

Add 2 new Calculator options (Plus only): maximum and minimum amount of sleep cycle to display.
Bring back Plus section to Settings tab.

0.3.7.2

Fixed: The app did not update scheduled alarms after changing stop and snooze time.

0.3.7.1

Support Japanese, Korean, Chinese, Russian, Spanish, Portuguese, Italian, German, French and Dutch.
Now you can snooze alarm for one more sleep cycle.
Improve user experience.

0.3.7

Now you can choose between in-app alarm and system alarm.
Add a new option for Plus users.
Improve user experience.

0.3.6.5

Add in-app browser.
Improve user experience.

0.3.6.2

Improve user experience.

0.3.6.1

Improve user experience.
Fixed: performance issue from last update.

0.3.6

Now you can set alarm sound.

0.3.5

New “Cycle length” option.
Rework “Include time to fall asleep” option.
New “Enable quick actions” option (plus users only).
Now you call pull to refresh Calculator and Alarm screen.
Calculation results now show sleep time in hour and minute.

0.3.4.3

Improve user experience.

0.3.4.2

Support upcoming Android 14.

0.3.4.1

Improve user experience.

0.3.4

Add app color option.
Replace in-app changelog by web changelog.
Alarm length and snooze length are now available for all users.

0.3.3

Fixed: crash of Nap timer.
Fixed: wrong value of alarm length.
Improve user experience.

0.3.2

New app icon.
Add alarm vibration.
Improve user interface.

0.3.1

Add F.A.Q.
Add a new option for Calculator.
Revamp calculation result UI.
Improve UI for large screen devices.

0.3.0

Add Nap (beta for plus users only).
Improve user experience.

0.2.9

Support Vietnamese.
Alarm will no longer be canceled when you reboot device.
Improve performance and app size.
Fixed: a bug of play/stop button.
Fixed: a bug of purchase button.

0.2.8

New “Set Alarm” button.
New changelog section.
Add 2 new sleep sounds.
Improve user experience.
Fixed: “remember last played” setting.

0.2.7

New “Set alarm” button.
New changelog section.
Add 2 new sleep sounds.
Improve user experience.
Fixed: “remember last played” setting.