LocalSend Kotlin

13 Downloads 51 Views v0.7 4.64 MB 4.1+

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(4.64 MB)

Editor's Overview

LocalSend Kotlin is a connectivity application developed by mouse233, packaged as a single Android APK of version 0.7 weighing in at 4.64 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 4.64 MB, so it installs quickly even on modest connections.
This build is signed by "mouse233" — 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

LocalSend Kotlin is an unofficial, lightweight native Android LocalSend client written in Kotlin. This project is not affiliated with or endorsed by the official LocalSend project. It aims to interoperate with the official LocalSend clients and provide secure file transfer on local networks, including older Android devices.

Implemented features:

- LAN device discovery using LocalSend v2 UDP multicast, with an HTTPS scanning fallback and selectable network interfaces.
- Sending and receiving files, folders, media, text, and clipboard content.
- Multi-file queues with progress, cancellation, configurable receive behavior, and history.
- HTTPS, certificate-fingerprint identity verification, optional PIN authentication, and SHA-256 checksums.
- System Default, Simplified Chinese, and English interfaces, plus theme colors, dark mode, device and favorite management, and network and transfer settings.
- Foreground-service transfers with lock-screen support, notifications, and an optional keep-screen-awake mode.
- Android Quick Settings tile for toggling the background transfer service on Android 7.0 (API 24) and later.
- Android system share target for single files, multiple files, and text content.

Compatibility:

- Android 5.0 (API 21) and later.
- Both devices must be connected to the same local network.
- Guest networks, AP/client isolation, multicast filtering, or vendor firewalls may prevent discovery or the TCP connection.

Storage:

- Android 10 and later uses MediaStore to save files to the public Downloads directory by default.
- Android 5.0 through Android 9 uses the Download/LocalSend Kotlin directory by default and requires legacy storage permission.

Current limitations include a less polished transfer queue interface, no browser-link receiving, no multi-threaded transfers, no large-file performance optimizations, and no resumable transfers. Android 4.x is not supported.

This is an Alpha project suitable for early-user testing. When reporting an issue, include the Android version, device model, both client versions, and reproducible steps.

Details

Version	v0.7
Size	4.64 MB
Developer	mouse233
Category	Connectivity
Package	io.github.mouse233.localsendkotlin
Android	4.1+
Last Updated	Oct 30, 2026
Downloads	13

Frequently Asked Questions

Is LocalSend Kotlin 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 LocalSend Kotlin require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is LocalSend Kotlin safe to install?
We link to the exact APK published by mouse233. 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 LocalSend Kotlin?
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 LocalSend Kotlin

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 io.github.mouse233.localsendkotlin.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «LocalSend Kotlin» by mouse233 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.