AppLock Theme Universe for Android
AppLock Theme Universe is a customization tool from AppLock@DoMobile for giving your AppLock a universe-themed look.
Get ThemeAppLock Theme Universe is for users who want to personalize their device's app locker with a cosmic design. This free theme pack works with AppLock version 2.16 or higher and requires Android 6.0 or later. The app is 4.2 MB in size, contains no ads or in-app purchases, and can be used without creating an account.
Screen gallery
- Size
- 4.2 MB
- Requires Android
- 6.0
- Updated
- Aug 29, 2026
- Installs
- 500K+
- Rating
- ★ 4.29 (1,185)
- Category
- Art & Design
- Developer
- AppLock@DoMobile
- Content rating
- Everyone
- Package
- com.domobile.aut.cuniverse
- Free
- ✓
AppLock Theme Universe is a theme pack by AppLock@DoMobile that changes the look of the AppLock app with a universe-inspired visual style. In simple terms, it is not a full app on its own — it is an add-on that gives an existing app a new appearance.
Once applied, the theme swaps the standard AppLock visuals for a space-themed design. The idea behind it is captured in the developer's own line: we are part of the universe, and the universe is part of us. If you like calm, cosmic artwork on your lock screens, this is the kind of small download that changes the mood of an app you already use.
The current version is 1.4, released on 2026-08-29. The download is 4.2 MB, so it takes very little space and installs quickly even on a modest connection. It requires Android 6.0 or newer, and it is free with no ads and no in-app purchases.
The theme depends on AppLock v2.16 or higher, so you need that app installed first. It sits in the Art And Design category and has been available since 2018-09-21. It carries an Everyone content rating, which makes it suitable for all ages. This page is aimed at beginners who are setting up their first theme and want clear, cautious steps.
Key features
- Changes the look of AppLock with a universe-inspired design
- Small download at just 4.2 MB
- Free to use, with no ads and no in-app purchases
- Rated for Everyone
- Works with AppLock v2.16 and above
- Version 1.4, updated on 2026-08-29
How to install
- Tap the download button on this page to get the 4.2 MB APK file.
- If Android asks, allow your browser or file manager to install apps — this is the "Install unknown apps" setting, and you can turn it back off later.
- Open the downloaded APK file from your notifications or your file manager's Downloads folder.
- Tap Install and wait a few seconds while the 4.2 MB package is copied.
- Install AppLock first if you have not already, since this theme needs AppLock v2.16 or higher and will not do anything on its own.
- Open AppLock and apply the universe theme from its theme settings. Your device must run Android 6.0 or newer.
Pros
- Free with no ads and no in-app purchases
- Very small at 4.2 MB
- Simple, single-purpose add-on that is easy to remove
- Suitable for all ages with an Everyone rating
- Backed by a long release history since 2018
Cons
- Does nothing without AppLock v2.16 or higher installed
- Only changes the look of AppLock, not other apps
- Declares a custom dynamic receiver permission, which some cautious users prefer to review
- Not useful if you do not already use AppLock
What's new
The latest release is version 1.4, dated August 29, 2026, and it focuses on providing a theme for AppLock. This universe-themed customization is designed for AppLock and requires that app version 2.16 or newer to work. The download is small at 4.2 MB, runs on Android 6.0 and above, and is free with no ads or in-app purchases. The developer did not publish detailed release notes for this update, so the description simply confirms the theme content.
Version history
| Version | Size | Requires Android | Updated |
|---|---|---|---|
| 1.4 | 4.2 MB | 6.0 | Aug 29, 2026 |
| 1.3 | 4.2 MB | 5.0 | Aug 11, 2025 |
| 1.2 | 4.2 MB | 5.0 | Jul 21, 2025 |
| 1.1 | 4.4 MB | 4.4 | Jun 13, 2024 |
| 1.0 | 2.1 MB | 4.0 | Jun 10, 2023 |
This theme is for people who already use AppLock and want to give it a fresh cosmic look. It is also a good pick for beginners who are learning how themes and add-ons work, because the file is tiny, free, and easy to remove if you change your mind. If you do not use AppLock, this download will not help you.
Install AppLock first, then this theme, so the option to apply it appears correctly. Check that your phone runs Android 6.0 or newer before downloading. Since the APK is only 4.2 MB, you can delete it after installing to keep your storage tidy. If the theme does not show up, confirm that your AppLock version is at least v2.16, then reopen the app.
Permissions
Frequently asked questions
What minimum version of AppLock do I need before installing this theme?
AppLock Theme Universe requires AppLock v2.16 or newer. You must have that version installed first, as this theme alone will not function without it.
Does this theme work on devices running Android 5.1 or older?
No. The minimum operating system required for AppLock Theme Universe is Android 6.0 (Marshmallow). Devices with older Android versions will not be able to run this theme.
Is this theme free, and does it include ads or in-app purchases?
Yes, the theme is free to download and use. It contains no ads and no in-app purchases, so you can apply the universe design without any extra costs or interruptions.
When was the latest update for this theme released, and what version is it?
The most recent update is version 1.4, released on August 29, 2026. Earlier versions include 1.3 (August 2025), 1.2 (July 2025), 1.1 (June 2024), and 1.0 (June 2023).
What does this theme add to my AppLock, and how large is the download?
AppLock Theme Universe adds a space-themed visual style to your AppLock, allowing you to customize its appearance with a universe-inspired look. The theme package is about 4.2 MB in size.
AppLock Theme Universe is a small, free way to restyle AppLock with a space-inspired look. At 4.2 MB with no ads or purchases, it is a low-risk download for anyone who already uses the main app on Android 6.0 or newer.
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Updated: Oct 25, 2026