# Dr. Klein (ChatGPT App)

> Calculate your Mortgage

- Type: app
- Publisher: Developer
- Categories: Finance, Real Estate
- Website: https://chatgpt.com/plugins/plugin_asdk_app_6a84227d2edc8191826953ecfcc4a742
- Open in ChatGPT: https://chatgpt.com/plugins/plugin_asdk_app_6a84227d2edc8191826953ecfcc4a742
- Version: 1.0.0
- Listed: 2026-10-04

## About

The Dr. Klein Mortgage Calculator calculates mortgage interest rates, monthly mortgage payments, the remaining loan balance, and the total interest costs of a mortgage. The property purchase price, down payment, repayment rate, and other financing details can be adjusted individually. Based on the entered data, the calculator provides various financing offers that can be compared side by side at a glance.
The Dr. Klein Mortgage Calculator is suitable for planning a mortgage for the purchase of a property, a new-build project, or a refinancing.
The calculations are based on the latest terms and conditions of more than 600 lending partners. As the final financing terms depend on individual circumstances, the calculated results are provided for guidance only. After completing the calculation, a personalized financing offer can be requested directly from Dr. Klein.

## How to use

1. **Add it in ChatGPT** Open Dr. Klein in ChatGPT's Plugin directory (button above), select + to add it and sign in if asked.

2. **Use it in a chat** Type @ in the composer and pick Dr. Klein, or start your message with its name. ChatGPT may also suggest it when it fits what you ask.

## Skills

- **Anschlussfinanzierung berechnen**: Angebote zur Anschlussfinanzierung berechnen
- **Immobilienfinanzierung berechnen**: Angebote für Kauf oder Neubau berechnen

## Example prompts

- "Berechne meine monatliche Rate für eine Baufinanzierung über 350.000 € in Berlin."
- "Vergleiche für mich Baufinanzierungen mit unterschiedlichen Laufzeiten."
- "Zeige mir den Top Zins für eine Baufinanzierung über 400.000 € in München."

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Source: https://chatgptplugins.directory/apps/dr-klein · Index: https://chatgptplugins.directory/llms.txt · Independent and community-run. Not affiliated with or endorsed by OpenAI. ChatGPT is a trademark of OpenAI.