ChronoRover
Accurate time signal generator for radio-controlled watches.
| AppID: | com.cho3ek89.ChronoRover |
| Author: | cho3ek89 |
| License: | GPL-3.0-only |
| Donation: | |
| InRepoSince: | 2026-07-29 |
| LastRepoUpdate: | 2026-08-04 |
| LastAppUpdate: | 2026-08-04 |
| LastVersion: | 1.0.6 |
| Categories: | Time |
| APK source: | Github |
| Google Play: | Check if it's there |
ChronoRover is a precise time signal generator that emulates official long-wave time broadcasts to synchronize radio-controlled watches with atomic accuracy using your phone’s speaker or headphones.
Among the currently supported signals are: DCF77 (Germany), MSF (United Kingdom), WWVB (United States), JJY (Japan), and BPC (China).
Whether you’re a watch enthusiast, collector, or simply want the most accurate time possible, ChronoRover turns your smartphone into a portable time signal transmitter.
Perfect solution for Casio and Citizen owners who live beyond the range of any official time signal transmission station!
CAUTION! This application generates loud, high-pitched noises that may cause discomfort or potential hearing damage! Leave the room while transmission is active.
While you can download the APKs here directly, you should preferably use an F-Droid client so the app stays up-to-date on your device. Some clients have this repo enabled by default, e.g. Neo Store, Droid-ify, or, of course, the IzzyOnDroid client by Sunil. With others (like the official client) you'll have to add this repo manually (see the hint on top of the package list for how to do that).
Packages
Version 1.0.6 (2026-08-04) 
Android Versions:
- Target: 16.0
- MinVer: 6.0
- ABIs: arm64-v8a
:
:
- none
:
- none
Permissions:
Features:
- None
Malware-Check:Passed
36 Libraries detected:
Libraries:
- Xamarin (Development Framework)
makes it possible to do native Android, iOS and Windows development in C#, with either Visual Studio or Xamarin Studio.
- Android Support v4 (Development Framework)
The Android Support Library is not actually a single library, but rather a collection of libraries that can roughly be divided into two groups: compatibility and component libraries. For details, please see Understanding the Android Support Library.
- AndroidX Activity (Utility)
provides the base Activity subclass and the relevant hooks to build a composable structure on top.
- Android Jetpack Annotations (Utility)
library that contains the annotations for Android Jetpack.
- Arch (Utility)
helper for other arch dependencies, including JUnit test rules that can be used with LiveData.
- AppCompat (Utility)
support newer Android features on older Android versions.
- Android Support Library collections (Utility)
standalone efficient collections.
- Jetpack Compose (Development Framework)
a framework to define UIs programmatically with composable functions that describe its shape and data dependencies.
- Concurrent (Utility)
AndroidX library to help move tasks off the main thread with coroutines and take advantage of ListenableFuture.
- Androidx Core (Utility)
a static library that you can add to your Android application in order to use APIs that are either not available for older platform versions or utility APIs that aren't a part of the framework APIs.
- AndroidX Cursor Adapter (Utility)
static library support version of the framework's CursorAdapter.
- Android Support Library Custom View (UI Component)
a module to implement custom views. Part of the Android Support Library.
- Drawerlayout (UI Component)
AndroidX library to implement a Material Design drawer widget.
- Android Emoji2 Compat (UI Component)
core library to enable emoji compatibility in Kitkat and newer devices to avoid the empty emoji characters.
- AndroidX Fragment (UI Component)
AndroidX library to encapsulate part of the user interface or behavior into reusable components.
- Interpolator (UI Component)
AndroidX library to use animation interpolators on older platforms.
- Lifecycle (Utility)
perform actions in response to a change in the lifecycle status of another component, such as activities and fragments.
- Loader (Utility)
library to load data for your UI that survives configuration changes.
- Androidx Navigation Event (UI Component)
provides APIs to easily intercept platform navigation events, including swipes and clicks, to provide a consistent API surface for handling these events.
- ProfileInstaller (Utility)
AndroidX library that enables libraries to prepopulate ahead of time compilation traces to be read by ART.
- ResourceInspection (Development Aid)
AndroidX library to surface the attributes of custom views in Android Studio’s Live Layout Inspector.
- Android Activity Saved State (Utility)
provides the base Activity subclass and the relevant hooks to build a composable structure on top.
- Startup (Utility)
AndroidX library to implement a straightforward, performant way to initialize components at app startup.
- Tracing (Utility)
AndroidX library to write trace events to the system trace buffer.
- Vectordrawable (UI Component)
AndroidX library to render vector graphics.
- Android Jetpack VersionedParcelable (Utility)
Provides a stable but relatively compact binary serialization format that can be passed across processes or persisted safely.
- Viewpager (UI Component)
AndroidX library to display Views or Fragments in a swipeable format.
- Jetpack WindowManager Library (Utility)
enables application developers to support new device form factors and multi-window environments. The library provides a common API surface for API versions 14 and later. Especially provides additional functionality on foldable devices.
- Google Core Libraries for Java 6+ (Utility)
a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, functional types, an in-memory cache, and APIs/utilities for concurrency, I/O, hashing, primitives, reflection, string processing, and much more.
- Kotlin (Utility)
The Kotlin Programming Language
- kotlinx.coroutines (Utility)
library support for Kotlin coroutines.
- Kotlin serialization (Utility)
Kotlin cross-platform / multi-format serialization.
- Mono for Android (Utility)
an open source implementation of Microsoft's .NET Framework.
- DotNet (Development Framework)
a cross-platform successor to the .NET Framework.
- IntelliJ IDEA (Utility)
development helper: integration for the IntelliJ IDEA IDE.
- JSpecify (Development Aid)
an artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.
Payment Modules:
- None found
an artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.
Ads & Analytics:
- None found
an artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.
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Version 1.0.5 (2026-07-31)
Android Versions:
- Target: 16.0
- MinVer: 6.0
- ABIs: arm64-v8a
:
:
- none
:
- none
Permissions:
Features:
- None
Malware-Check:Passed
35 Libraries detected:
Libraries:
- Xamarin (Development Framework)
makes it possible to do native Android, iOS and Windows development in C#, with either Visual Studio or Xamarin Studio.
- Android Support v4 (Development Framework)
The Android Support Library is not actually a single library, but rather a collection of libraries that can roughly be divided into two groups: compatibility and component libraries. For details, please see Understanding the Android Support Library.
- AndroidX Activity (Utility)
provides the base Activity subclass and the relevant hooks to build a composable structure on top.
- Android Jetpack Annotations (Utility)
library that contains the annotations for Android Jetpack.
- Arch (Utility)
helper for other arch dependencies, including JUnit test rules that can be used with LiveData.
- AppCompat (Utility)
support newer Android features on older Android versions.
- Android Support Library collections (Utility)
standalone efficient collections.
- Jetpack Compose (Development Framework)
a framework to define UIs programmatically with composable functions that describe its shape and data dependencies.
- Concurrent (Utility)
AndroidX library to help move tasks off the main thread with coroutines and take advantage of ListenableFuture.
- Androidx Core (Utility)
a static library that you can add to your Android application in order to use APIs that are either not available for older platform versions or utility APIs that aren't a part of the framework APIs.
- AndroidX Cursor Adapter (Utility)
static library support version of the framework's CursorAdapter.
- Android Support Library Custom View (UI Component)
a module to implement custom views. Part of the Android Support Library.
- Drawerlayout (UI Component)
AndroidX library to implement a Material Design drawer widget.
- Android Emoji2 Compat (UI Component)
core library to enable emoji compatibility in Kitkat and newer devices to avoid the empty emoji characters.
- AndroidX Fragment (UI Component)
AndroidX library to encapsulate part of the user interface or behavior into reusable components.
- Interpolator (UI Component)
AndroidX library to use animation interpolators on older platforms.
- Lifecycle (Utility)
perform actions in response to a change in the lifecycle status of another component, such as activities and fragments.
- Loader (Utility)
library to load data for your UI that survives configuration changes.
- Androidx Navigation Event (UI Component)
provides APIs to easily intercept platform navigation events, including swipes and clicks, to provide a consistent API surface for handling these events.
- ProfileInstaller (Utility)
AndroidX library that enables libraries to prepopulate ahead of time compilation traces to be read by ART.
- ResourceInspection (Development Aid)
AndroidX library to surface the attributes of custom views in Android Studio’s Live Layout Inspector.
- Android Activity Saved State (Utility)
provides the base Activity subclass and the relevant hooks to build a composable structure on top.
- Startup (Utility)
AndroidX library to implement a straightforward, performant way to initialize components at app startup.
- Tracing (Utility)
AndroidX library to write trace events to the system trace buffer.
- Vectordrawable (UI Component)
AndroidX library to render vector graphics.
- Android Jetpack VersionedParcelable (Utility)
Provides a stable but relatively compact binary serialization format that can be passed across processes or persisted safely.
- Viewpager (UI Component)
AndroidX library to display Views or Fragments in a swipeable format.
- Jetpack WindowManager Library (Utility)
enables application developers to support new device form factors and multi-window environments. The library provides a common API surface for API versions 14 and later. Especially provides additional functionality on foldable devices.
- Google Core Libraries for Java 6+ (Utility)
a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, functional types, an in-memory cache, and APIs/utilities for concurrency, I/O, hashing, primitives, reflection, string processing, and much more.
- Kotlin (Utility)
The Kotlin Programming Language
- kotlinx.coroutines (Utility)
library support for Kotlin coroutines.
- Kotlin serialization (Utility)
Kotlin cross-platform / multi-format serialization.
- Mono for Android (Utility)
an open source implementation of Microsoft's .NET Framework.
- IntelliJ IDEA (Utility)
development helper: integration for the IntelliJ IDEA IDE.
- JSpecify (Development Aid)
an artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.
Payment Modules:
- None found
an artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.
Ads & Analytics:
- None found
an artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.
Download (16.8 M)