v3.26.3
Intangible assets (Details) - CHF (SFr)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2024
Dec. 31, 2025
Intangible assets            
Fair value of Income recognised for services received at zero cost SFr 9,948 SFr 34,505 SFr 17,639 SFr 105,560    
Fair value of services received at zero cost recorded as other operating cost 9,948 SFr 34,505 17,639 SFr 105,560    
Service agreement            
Intangible assets            
Additions         SFr 182,348  
Service agreement | Cost            
Intangible assets            
Intangible assets 182,348   182,348     SFr 182,348
Service agreement | Accumulated depreciation            
Intangible assets            
Intangible assets SFr (182,348)   SFr (182,348)     SFr (182,348)