This website already describes OptionsApp 2.0, release on 08.10.2026. Until then, the download offers version 1.10. Stocks, ETFs and some new features are only available from the release onwards.
OptionsApp

Remote access via RDP: Windows PC, macOS, iPhone & iPad

Updated: October 13, 20252 min read

1. Overview

Access to the Windows Server (with OptionsApp and TWS) is via Remote Desktop Protocol (RDP).
On Windows, you use the built-in Remote Desktop Connection tool (mstsc).
On macOS and iPhone/iPad, you use Microsoft's "Windows App" (the earlier "Microsoft Remote Desktop" app has been renamed/replaced by Microsoft).

2. Prerequisites

  • Public IP/DNS of the server; RDP must be enabled on the server side (should be the default).
  • RDP user (usually: Administrator) and password. These are not your Strato or Ionos login credentials, but the login credentials for the server itself.
  • On Apple devices, the Windows App from the App Store. On iOS/iPadOS, it's currently listed as "Windows App Mobile" and carries the note "Formerly Remote Desktop".

3. Connecting from a Windows PC

Instructions:

  1. Open Start menu, then launch Remote Desktop Connection (or Win + R, then mstsc).
  2. Computer: Enter the server IP/DNS (e.g., 203.0.113.10).
  3. Connect, then Enter login credentials, then Confirm.

Note: The classic Windows component "Remote Desktop Connection" remains available; the new "Windows App" replaces the newer Microsoft Store app "Remote Desktop" (this does not affect mstsc).

4. Connecting from a Mac (macOS)

4.1 Install Windows App

  • Open Mac App Store, then Install Windows App by Microsoft, then Launch it. (The Windows App replaces the earlier "Microsoft Remote Desktop" app.)

4.2 Add PC/Server

  1. Select Add PC.
  2. PC Name: Enter the server IP.
  3. User Account: Save user/password.
  4. Optionally enable Full screen, then Start connection.

5. Connecting with iPhone or iPad (iOS/iPadOS)

5.1 Install Windows App Mobile

  • App Store, then Windows App Mobile (Microsoft).

5.2 Set up PC/Server

  1. Open app, then +, then Add PC.
  2. PC Name: Server IP/DNS.
  3. Save User Account, then Tap to connect.
  4. Operation via touch/zoom; keyboard appears on demand, external BT keyboard supported.

Technical note: Microsoft's current Windows App has officially replaced the older iOS Remote Desktop app; functionality and purpose (RDP to remote PCs and cloud desktops) are described in the Microsoft Docs.

6. Best Practices & Security

  • Use strong passwords and consider IP filtering/VPN if needed.
  • In the app, only share clipboard/drives when necessary.
  • Keep time synchronization (NTP) active on the server to avoid RDP login token/SSL issues.
  • Use different user accounts for multiple simultaneous RDP sessions.

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