His style relies on clear, structured compositions. In works such as Gezicht op een bergmeer, he uses vertical elements like waterfalls or rocky outcrops to frame the view. He frequently included small figures to provide a sense of scale against the massive Swiss mountains. His use of ink and wash allowed him to capture the textures of stone and water. These works were often intended as studies for prints.

Ulinger's art suits modern interiors because of its monochromatic palette and architectural focus. The absence of heavy ornamentation makes these 18th-century scenes feel contemporary. Collectors value the way he balances natural forms with human structures like stone bridges. His depictions of the Swiss countryside offer a calm, orderly perspective on the natural world. These prints provide historical depth without overwhelming a room with colour.