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Koyomi-Link

Windows

Koyomi-Link is a desktop companion app that bridges custom mobile apps and Windows PCs over the same network. By running Koyomi-Link on Windows, you can receive text and input commands sent from compatible apps and reflect them in the input destination on the PC.

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A Hub Connecting Mobile and PC

Koyomi-Link is a background desktop application designed to bridge smartphone operations with Windows PC inputs.
By combining it with compatible apps such as "Scaflow" or "PhraseKeyboard," you can utilize your iPhone as a functional input device for your PC.

Easy Connection via QR Code

There is no need for complex IP address entries or network configurations.

  • Launch Koyomi-Link on your PC
  • Scan the displayed QR code with a compatible app on your smartphone

With just these steps, you can begin seamless integration between your devices.

Features and Functions

  • Real-time Reflection: Instantly sends content entered or scanned on your smartphone directly to the current cursor position on your PC.
  • System Tray Design: The app can be minimized to the system tray, ensuring it stays out of the way of your workspace.
  • Auto-launch Support: Supports automatic startup with Windows, allowing you to start syncing whenever you need it.

App Specifications

Platform Windows
Latest Version 1.1.3 (2026-05-30)

Message from the Developer

Reviews on the App Store and comments here are a huge motivation for development. I read all your feedback, and it directly influences the priority of future updates.

Version History

1.1.3 [Latest] 2026-05-30 — Improved file receiving support for KoyomiDrop. This update makes it easier for Koyomi-Link to receive photos, videos, and files sent from KoyomiDrop on iPhone or iPad. Main updates: ・Added support for receiving files from KoyomiDrop ・Improved handling for photos, videos, PDFs, CSV files, ZIP files, and other file types ・Maintained QR code and manual connection support ・Improved stability during file transfers ・Updated the Windows installer Run Koyomi-Link on a Windows PC connected to the same local network as KoyomiDrop to send files from your iPhone or iPad to your PC.
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1.1.2 2026-05-28 — Koyomi-Link v1.1.2 adds Windows clipboard integration. Values sent from supported apps can now be copied to the Windows clipboard or pasted into the currently focused input target. Clipboard and paste results are now shown in the Koyomi-Link log. Existing features such as barcode sending, text sending, key input, and automatic updates remain unchanged.
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1.1.1 2026-05-27 — Koyomi-Link v1.1.1 adds automatic update support for the Windows version. You can now check for new versions from the settings screen and download the installer when an update is available. This update also adds current version display, file size/SHA256 verification for downloaded files, improved icon display, and better startup stability.
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1.0.0 2026-04-16 — 【English】Koyomi-Link 1.0.0 Release Notes Koyomi-Link is now available in its first public release. What’s new - Added desktop connectivity for linking your apps with a Windows PC - Added support for receiving text from apps on the same network and sending it to your PC - Added QR code display for quick connection setup - Added system tray support - Added tray-to-close behavior so the app stays running in the tray when the window is closed - Improved tray menu actions with Show, Settings, and Exit - Added launch at Windows startup option - Added startup display mode options - Open window on launch - Start minimized to tray - Added a dedicated Settings window and moved startup options out of the main screen - Unified the taskbar icon and tray icon appearance - Implemented the integration foundation for supported apps such as PhraseKeyboard - Improved QR connection flow and text sending stability Notes Koyomi-Link is a resident desktop companion app designed to connect your apps with a Windows PC. It is intended to serve as a shared integration platform for additional supported apps in the future.
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Related Articles

Published articles related to this app.

Scaflowをアップデートしました。画像からスキャンと履歴機能がさらに使いやすくなりました Scaflow攻略ガイド｜iPhone・iPadでバーコードをPCへ自動入力する方法 定型文入力を爆速化！PhraseKeyboardでiPhoneの文字入力を快適に iPhoneがバーコードリーダーに！ScaflowでPC入力作業を効率化 モバイルとPCを繋ぐ共通の架け橋。連携プラットフォーム『Koyomi-Link』の設計思想

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