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We present the first public release of photometric redshifts, galaxyrest-frame properties and associated magnification values in the cluster andparallel pointings of the first two Frontier Fields, Abell-2744 and MACS-J0416.We exploit a multi-wavelength catalogue ranging from HST to ground-based K andSpitzer IRAC which is specifically designed to enable detection and measurementof accurate fluxes in crowded cluster regions. The multi-band information isused to derive photometric redshifts and physical properties of sourcesdetected either in the H-band image alone or from a stack of four WFC3 bands.To minimize systematics median photometric redshifts are assembled from sixdifferent approaches to photo-z estimates. Their reliability is assessedthrough a comparison with available spectroscopic samples. State of the artlensing models are used to derive magnification values on an object-by-objectbasis by taking into account sources positions and redshifts. We show thatphotometric redshifts reach a remarkable ~3-5% accuracy. After accounting formagnification the H band number counts are found in agreement at brightmagnitudes with number counts from the CANDELS fields, while extending thepresently available samples to galaxies intrinsically as faint as H160~32-33thanks to strong gravitational lensing. The Frontier Fields allow to probe thegalaxy stellar mass distribution at 0.5-1.5 dex lower masses, depending onmagnification, with respect to extragalactic wide fields, including sources atMstar~ 10^7-10^8 Msun at z>5. Similarly, they allow the detection of objectswith intrinsic SFRs>1dex lower than in the CANDELS fields reaching 0.1-1Msun/yr at z~6-10. [abridged]

The ASTRODEEP Frontier Fields Catalogues: II - Photometric redshifts and rest-frame properties in Abell-2744 and MACS-J0416