Adaptive Theme

xLexip | System

6 Downloads 12 Views v2.5 3.59 MB 4.1+

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(3.59 MB)

Editor's Overview

Adaptive Theme is a system application developed by xLexip, packaged as a single Android APK of version 2.5 weighing in at 3.59 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 3.59 MB, so it installs quickly even on modest connections.
This build is signed by "xLexip" — always verify the developer name matches what's listed on the app's official store page before installing an update.
After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

About this app

Adaptive Theme switches Android's system-wide theme between light and dark mode according to the ambient light sensor instead of relying on sunset or a fixed schedule. Use light mode in bright surroundings and dark mode in low light, with the threshold under your control.

It can also switch your wallpaper to match the active theme.

Features

Uses the device's physical ambient light sensor

Custom lux threshold and presets for indoor, outdoor, and daylight conditions

Wallpaper Theme Sync for separate light and dark home and lock screen wallpapers

Optional blur effect for the lock screen wallpaper

Optional night lock to keep dark mode active during a chosen time period

Quick Settings tile for convenient control

Material You interface and more than 50 languages

Efficient by design

The sensor is sampled briefly after the screen turns on rather than monitored continuously. Before changing the theme, Adaptive Theme checks that the sensor is not covered by a hand or pocket. Theme changes therefore happen at screen-on and do not interrupt you while you are actively using another app.

One-time setup

Android does not normally allow regular apps to change protected system settings such as the system theme. Adaptive Theme therefore needs a one-time grant of the WRITE_SECURE_SETTINGS permission. This permission does not grant root access or allow the app to read personal data. Adaptive Theme uses it only to switch the light and dark system theme, and it is revoked when the app is uninstalled.

The guided setup offers several options:

WebADB through a simple website on a computer or secondary Android device, without installing ADB

Shizuku and compatible Shizuku forks, required only once while granting the permission

Root on supported devices

A manual ADB command: adb shell pm grant dev.lexip.hecate android.permission.WRITE_SECURE_SETTINGS

More

Adaptive Theme requires Android 14 or newer. Tablets are currently not supported.

The FOSS build is licensed under GPL-3.0 and contains no ads, analytics, crash reporting, trackers, or proprietary libraries.

For troubleshooting and additional details, see the README and FAQ.

Details

Version	v2.5
Size	3.59 MB
Developer	xLexip
Category	System
Package	dev.lexip.hecate
Android	4.1+
Last Updated	Oct 30, 2026
Downloads	6

Frequently Asked Questions

Is Adaptive Theme free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does Adaptive Theme require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is Adaptive Theme safe to install?
We link to the exact APK published by xLexip. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update Adaptive Theme?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install Adaptive Theme

Tap the Download APK button above and save the file to your device.
Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
Open the downloaded dev.lexip.hecate.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «Adaptive Theme» by xLexip and grant only the permissions it actually needs.
Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.