Provided is a mobile autonomous apparatus (1) for measuring and analysing at least one parameter representing the fat of a skin surface area comprising at least one probe (10) comprising at least two pairs of electrodes intended to come into contact with the skin surface area defining a frrst pair of injecting electrodes (11, 12), and a second pair ofreceiving electrodes (13, 14) for measuring the response to the injection, an energy source (5) for producing, at the frrst pair of injecting electrodes (11, 12), a variable electrical signal with a current of intensity i included in the range [60 μA to 4000 μA] and a frequency included in the range [1 k Hz to 1000 kHz], a data processing and control unit (CPU) for determining the elements relative to the bio-impedance (Z) of said area and said at least one parameter representing the cellulite of the skin surface area.