The terms of use of Aperture Photometry Tool are given herein.
License
You are granted permission to use Aperture Photometry Tool only for purposes of research and education in astronomy and astrophysics. Use of this software outside of these scientific fields is prohibited without express permission from the creator of Aperture Photometry Tool.
Limitation of Liability
In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall the creator of Aperture Photometry Tool or California Institute of Technology be liable to users of the software for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the software (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if the creator of Aperture Photometry Tool has been advised of the possibility of such damages.
Disclaimer
Aperture Photometry Tool (APT) is distributed WITHOUT ANY WARRANTY; WITHOUT ANY IMPLIED WARRANTY OF MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.