Tools and services
Which third-party services run behind tkai, what they are used for and where they are based. Legal details are in the privacy policies (German).
Operation
| Service | Used for | Based in |
|---|---|---|
| Hostinger (own server) | Solar mit Gewinn, Wärmepumpe mit Gewinn, Senior and EngiCalc, plus email | Server in Germany, provider in Cyprus |
| GitHub Pages | Serving this website, tkai.tech | USA |
| GitHub and npm | Source code and package of engicalc-core | USA |
Artificial intelligence
| Service | Used for | Based in |
|---|---|---|
| Google Vertex AI (Gemini) | Reading uploaded quotes, photos and incoming emails in the two calculators | Google Ireland, USA not excluded |
| Google Gemini Live API | Voice conversations in Senior | Google Ireland, USA not excluded |
Data and payment
| Service | Used for | Based in |
|---|---|---|
| PVGIS | Solar irradiation and yield at the site in Solar mit Gewinn | Joint Research Centre of the European Commission |
| Google Solar API | Roof analysis in Solar mit Gewinn | Google Ireland, USA not excluded |
| Stripe | Payment for memberships and minute packages in Senior | Ireland, USA not excluded |
| YouTube (no cookies until play) | Explainer videos on the product pages | Google Ireland, USA not excluded |
What is not used
- No analytics or advertising cookies, no tracking, no ad networks.
- EngiCalc calculates entirely in the browser. No input leaves the device.
- Content sent to Google Vertex AI for analysis is not used to train the models.
Details (German): Privacy policy tkai.tech, Solar mit Gewinn, Wärmepumpe mit Gewinn, Senior.