My other Apps & Websites
Here are some of my other apps, websites, and open-source projects.
Most relevant projects
FuelCalc
A glucose-to-fructose ratio calculator web app for optimising carbohydrate fueling in endurance sports. Also Supports OCR from Cronometer Screenshots.

Skinfold Caliper Body Fat Calculator
A body-fat calculator that uses skinfold caliper measurements, tracks progress over time, and can exchange biometric data with FuelLens.
GarminLifestyleLoggingAnalysis
An R-based analysis script that joins daily lifestyle logs with Garmin sleep data and reports the resulting changes in sleep quality with significance levels (p-value).
Strava2Garmin
A Windows-friendly Python tool that synchronises activity names, descriptions, and optional event categories from Strava to Garmin Connect.
SleepTempFinder
An R-based analysis tool for exploring relationships between sleeping-room temperature, humidity, and sleep-quality metrics.


Other projects
| Project | Description |
|---|---|
| TourTimeCalulator | Tour-time predictions with Strava API integration. |
| RuterfahrenIn_BatchDateien | Windows batch scripts for scheduled PC shutdown or hibernation. |
| ActivityWatch_StartUpScripts_FlorianZahl_launcher | A staged ActivityWatch startup orchestrator for Windows. |
| ActivityWatch_Android-Import | Imports ActivityWatch data from Google Drive and synchronises it with a local instance. |
| ActivityWatch_iPad_Simple_Screentime_import | Imports iPad Screen Time data into ActivityWatch. |
| ActivityWatch_email_summary | Generates and emails ActivityWatch summary reports. |
| YT-DLP-GUI | A graphical front-end for the yt-dlp video downloader. |
| PolarstepsPDFCreator | Creates PDF travel documentation from Polarsteps trips. |
| InternalWindMachine | Controls PC fans using live SimRacing telemetry. |
Find me online
Related guides
Continue with these connected Fuel Lens guides.