01 / PRODUCT DESIGN
Focused mobile experiences
We shape compact, understandable app flows around one clear job instead of bloated feature lists.
Hartmann · Grevenbroich · Digital Product Studio
Compare less.
Choose better.
Hartmann builds focused mobile tools with clear interfaces and practical workflows. Our first product, PureVisual Comparator, helps you review local videos side by side using the details that matter.
PureVisual Comparator
Add Videos
Pick local videos and compare them side by side.
Choose from device
AllFavoritesShort clipsLarge files
Morning City 4K.mp4
512 MB · 3840 × 2160
Morning City 1080p.mp4
156 MB · 1920 × 1080
A different kind of studio page
Built around small, useful products — not account ecosystems.
02 / ENGINEERING
Fast, maintainable builds
Android product engineering, responsive interfaces, local-first data flows and reliable release preparation.
03 / QA
Testing before polish
Functional checks, edge-case testing, performance review and release-readiness validation across practical user journeys.
PureVisual Comparator
A local video comparison utility.
- Compare duration, resolution, orientation and file size.
- Review multiple clips side by side.
- Use favorites and comparison history for quicker access.
- Designed without accounts or sign-in.
Privacy first
Your files remain yours.
Hartmann does not operate an account system for PureVisual Comparator. The app is designed around local device use. It does not sell or share personal data.
Data Retention: Hartmann does not retain user data on company servers. Any app information stored locally remains on the user’s device until the user removes it.
Data Deletion: Users can delete local app data from the application/device controls. Because Hartmann does not keep server-side copies, there is no remote user dataset to delete.
Contact
Hartmann
Grevenbroich, Germany
Heinrich-Goebel-Str. 16
41515 Grevenbroich
Germany