Portrait in a cap, in front of a vintage drawer cabinet

Christoph Mandl

I design digital products and brands. All the design work at StärkenEffekt GmbH comes from my desk.

StärkenEffekt

StärkenEffekt makes strengths visible, from family-run carpentry shops to global corporations. It offers an online assessment, team workshops, and coach training.

What I did:
  • Brand design
  • Web design
  • UI design
  • Design system
Design system
UI design
Infographic “Strong Team”: a folded ribbon running from purpose and goals through strengths and roles, implementation and rituals, to team spirit
Brochure for the 2025 team workshop: the cover and its three formats, Let’s go, Momentum, and Retreat
Editorial design
The staerkeneffekt.de homepage: “We make strengths visible.”
Web design
Flyer for the MyWorkLife workshop, front and back
Print design
Someone holds up the filled-in poster “The Strengths in Our Team” to the camera
“360° View” report in the StärkenRadar admin dashboard: 509 activated 360° views, activation rate 33.1%, 2,189 responses, viral coefficient 0.40; below, a bar chart of responses per 360° view and the discount code redemption rate
UX design
Portrait of a laughing, freckled woman against a light wall in StärkenEffekt’s photo style: black and white with night blue in the shadows
Photo style

Used by

Bosch, Deutsche Bahn, Roche, Siemens Energy

And many more. Over 20,000 people have taken the StärkenRadar test.

Thann Bioleder

What began as a repair shop in Regensburg grew into a maker of organic leather goods, with its own brand and online store.

What I did:
  • Brand design
  • Web design
  • E-commerce design
  • Product design
Sketches of the logomark on a cutting mat: a fir tree made of lines, in a circle and as a diamond pattern
Logo design
The logo embossed on the belt
Style guide
Responsive logo
3D model of a brass belt buckle
Product design
Round tin of Thann leather balm, its label showing the fir tree in fox red
Packaging design
Window lettering for the workshop
Test print on kraft paper
The thannleder.de homepage: cattle grazing in a pasture, “Real organic leather starts in the pasture.”
Web design
The website designed in XD, shown on a laptop and an iPhone
Improvised photo setup: a belt being photographed against white cardboard
Product photography
Business cards: on the front, the logomark over a misty fir forest; on the back, a line about the leather
Print design
Award ceremony: three people in front of the exhibition wall
Kultur- und Kreativpiloten Deutschland 2018

Exhibited at

Positive Space: Corporate Design

Degginger, Regensburg, September to December 2019. Chosen from more than 80 entries.

Brenner Cycles

A Regensburg bike maker that built the most beautiful bike in town, in a limited run of 50.

What I did:
  • Brand design
  • Web design
  • Product design
  • Photography
  • Labor of love
The logotype as a decal on the down tube
Brenner Cycles logo: two arcs above the logotype, white on red and black on white
Logo design
Brenner Cycles flyer: on the front, a rider and bike; on the back, “The most beautiful bike in town”
Print design
The brennercycles.de homepage: a rider and bike next to the logo
Web design
3D model of a cream bicycle frame with a red logotype
Product design
A cyclist on the cream bike crossing cobblestones, with the logo in the top right corner