The current version of Fitdigits apps can always be found on the Google Play Store.
Previous releases of Fitdigits Android Apps
iCardio * iRunner * iBiker
If you are having issues with the current version, you might try dropping down to a previous version if it worked for you. Previous versions are all iCardio, but base functionality and account information should be the same across apps.
v10.017 Sep 25, 2020
https://storage.googleapis.com/media_manager/support/app-icardio-release.apk
v4.25 Jul. 31, 2018
https://drive.google.com/open?id=1aGs57Ou5ojk3ZYe77MmOYfY5IxjJkz8y
v4.15 Nov. 14, 2017 – Last release with old home screen feed / activity results layout, and without Landscape support
https://drive.google.com/open?id=0B0uod1rzjTpDZEVodVhCemhQaUE
v4.08 June 16, 2017 – The new user interface, material design, and much more!
https://drive.google.com/file/d/0B0uod1rzjTpDVGwxenY4ck5zLUU/view?usp=sharing
v3.92 July 20, 2017
https://drive.google.com/file/d/0B0uod1rzjTpDUVJhdTdYR1A2ZE0/view?usp=sharing
v3.78 April 7, 2017
https://drive.google.com/file/d/0B0uod1rzjTpDUVJhdTdYR1A2ZE0/view?usp=sharing
v3.72 Jan 9, 2017
https://drive.google.com/file/d/0B0uod1rzjTpDRTFjdFRSOXpUMk0/view?usp=sharing
v3.69 Dec 28, 2016
https://drive.google.com/file/d/0B0uod1rzjTpDVkdWLW5NUWMzRDQ/view?usp=sharing
v3.61:
https://drive.google.com/file/d/0B0uod1rzjTpDZy04MFlxQW9DOUU/view?usp=sharing
v3.58:
https://drive.google.com/file/d/0B0uod1rzjTpDVHNPMEJPUzNxaDg/view?usp=sharing
v3.31 (pretty old…):
https://drive.google.com/file/d/0B0uod1rzjTpDRVBWUXBiZWRKRWM/view?usp=sharing