In-app purchases
3.2K reviews
Content rating
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About this app

Note for MIUI users:
MIUI is known for breaking core functionalities in Android. If you want to use Cometin on a MIUI or Xiaomi device please read this:
You can also join the Telegram group:

What is Cometin
Cometin is a growing collection of tweaks and tricks to optimize your productivity and improve the Android experience.

More information
I can create a separate app for every idea I have. But why shouldn't I put everything in 1 app?
Google announced Dynamic Modules at the IO in 2019

With dynamic features you can split an app into several parts. This is exactly what Cometin is.
Cometin is a growing collection of tricks and tweaks for your Android device, split into modules.
This way you only download the features that you want to use and save your storage space.

Available modules (with some small descriptions)
• Ambient display
bring a customized Ambient display, Always-on-display and wave to wake to your device
• App locker
Lock apps behind a passcode or pattern
• Better rotation
Forces every app to be compatible with every orientation including 180 degrees
• Caffeine
Keep your screen on for a certain amount of time
• Cometin Sync
Sync notifications, and notes between phones and desktops
• Darker brightness
Go below the minimum brightness by applying a dark overlay on top of your screen
• Flip to shhh (Cometin 2.0 and up)
Flip your phone face down to silent notifications (except alarms)
• Heads-up
Hide head-up notifications
• Immersive
Hide statusbar, navigationbar or both
• Parallel
Create a work profile to seperate personal and work.
• Remap assistant
Execute a different action when opening the assistant
• Shake actions (Cometin 2.0 and up)
Execute a different action when shaking the device

Is this safe?
Yes! All modules are only served from the Google Play Store, all modules are scanned by Google Play Protect so nothing to worry about!

Installing modules:
The installation of modules is done immediately, and you can use the module immediately after installation.

Updating modules:
Installed modules are automatically updated together with Cometin. No hassle with separate files!

Removing modules:
Module uninstalls do not occur immediately. That is, the device uninstalls them in the background in the next 24 hours or with a new Cometin update.

Request for new features:
Requests for new features are always welcome! However, I cannot promise anything about the actual arrival of these features.
Request your features via my support ticket system: This way you can keep track of the status of features.

Need help or got problems?
If you are stuck or need more information, don't hesitate and contact me via my support ticket system: Or join the support telegram group:

What permission Cometin asks for and why
Every permission makes sense, and descriptions in the system settings explain which modules make use of what permissions.

* In order to use more than 5 modules at the same time a small donation is required.

Cometin Cloud

What is Cometin Cloud
Cometin Cloud is a cloud service for storing data so that it can be retrieved on other devices. Cometin Cloud consists of a database where information is stored temporarily and securely.

Deleting/managing data
When creating a Cometin Cloud session, a unique ID is created under which information is stored. You can permanently delete all information at any time. In addition, all information is automatically deleted after 1 month of inactivity.
Updated on
Jan 21, 2021

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
Personal info, Messages and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

3.14K reviews
A Google user
January 5, 2020
I love the app, but the immersive module isn't working on my s10+. It will say the install is pending and then that it error-ed out. (-100 for module [cometin_immersive].) Update: rebooted my device and tried again: it still didn't work. I then rebooted another time and got the same result. My phone notifies me that it was successful, but I get the same error within the app saying it wasn't. Thank you for your help.
28 people found this review helpful
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January 19, 2020
Hi Earl, Thanks for using Cometin. Could you try rebooting your device? Would love to know if that fixes the issue. This error is a signature verification error. - Stjin Update: I haven't heard from you yet. With your help we can make Cometin a better application for everyone! Consider contacting me through email or Telegram.
Cristian Pop
March 9, 2021
I literally can't wait for what modules will come out next! This whole app does feel a bit like it's in beta, for example the modules take a while to enable and disable but they still work. Oh btw there is a slight problem with the Shake Motion Module where if you've locked the phone for a while and you want to turn on the flashlight, it triggers 3 or 4 times regardless of the sensitivity.
82 people found this review helpful
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Jeremy Herbert (Jay)