A holding device for a tablet computer has a lower part spanning a setting-up surface for setting it up on a tabletop and an upper part which can be rotated with respect to the lower part about a rotation axis extending substantially perpendicularly to the setting-up surface, which upper part has a first and a second bearing surface for the tablet computer, wherein each of the bearing surfaces defines a position of the tablet computer in which it is inclined at an acute angle to the setting-up surface, and wherein the tablet computer in the position defined by the first bearing surface is inclined at a greater angle to the setting-up surface than in the position defined by the second bearing surface.