Launcher OSTM for Android

Launcher OSTM is a personalization app by Apps Genz that replaces the default home screen with a custom launcher aimed at making a phone simpler and prettier. It addresses the desire for a more streamlined, visually clean interface by offering a lock screen and quick-access tools that work even when the screen is locked. The app solves the problem of juggling multiple shortcuts and screens by centralizing camera, calls, notifications, and a universal file search into one overlay. It achieves this through a set of special permissions, including camera access for lock-screen shortcuts, phone-state reading for incoming call display, notification access for lock-screen alerts, storage read/write for wallpapers, draw-over-screen for the lock screen overlay, manage-external-storage for file search, and microphone access for voice-to-text in an AI chat. The app has been updated as of September 2026, with version 6.3.15, and requires Android 8.0 or higher. It is free to download, contains ads, and offers in-app purchases. The app has a rating of 4.39 based on over 1.8 million ratings and has been installed over 100 million times since its release in May 2020.

Key features

• Lock-screen camera shortcut that opens the camera when the screen is locked
• Lock-screen phone call display using phone state permission
• Lock-screen notification display with notification access permission
• Wallpaper support from device storage and server-saved images
• Draw-over-screen lock screen overlay that appears above all applications
• Built-in universal file search feature that uses manage external storage permission
• Voice-to-text conversion in AI chat using microphone access

How to install

1. Tap the download button on this page to get the APK file.
2. When Android prompts, allow your browser or file manager to install apps by enabling the 'Install unknown apps' setting.
3. Open the downloaded APK file from your notifications or file manager.
4. Tap Install and wait for the installation to complete.
5. Open the app from your app drawer.
6. Note that the file size is not specified, and the minimum Android version required is 8.0.

Latest changes · 6.3.15

Launcher OSTM version 6.3.15 is now available, bringing a fresh update to help keep your phone simple and visually appealing. This release focuses on refining the overall experience to make your device more personal and intelligent. The update includes stability improvements and performance enhancements to ensure smoother everyday use. For the best experience, the app still requires certain permissions for features like the lock screen camera, call display, notifications, and AI voice-to-text.

Launcher OSTM is best suited for users who want to customize their Android phone's home screen and lock screen with a focus on simplicity and visual appeal. It appeals to people who frequently use quick actions like opening the camera or checking notifications without unlocking the device, and who appreciate having a built-in file search tool. The app is also aimed at those who are comfortable granting broad permissions in exchange for a more integrated launcher experience, including access to storage, camera, microphone, and phone state. It may be less suitable for privacy-conscious users who prefer minimal permissions, given the extensive access the app requests.

Before installing, review the list of permissions and consider whether you are comfortable granting access to your camera, microphone, location, and phone state. Since the app includes ads and in-app purchases, you may want to explore the free features first and decide if any paid upgrades are worth it. Also, be aware that the manage external storage permission enables a file search feature, so you can use it to quickly locate files, but it also means the app can read your storage.

Launcher OSTM offers a feature-rich launcher experience with a lock-screen overlay and file search, backed by a large user base and positive ratings. However, its extensive permission requests and presence of ads and in-app purchases mean you should weigh convenience against privacy before installing.