CAUTION:
This app has been designed for flight crews, pilots and flight attendants. However, it does not comply with any official regulations.
So it may not suit your needs, especially for Commercial Air Transport operators (CAT).
With this app you can list and monitor the expiration date of all your crew documents:
Type Ratings, medical checks, visas, training documents such as RVSM, NAT-HLA, CRM, DANGEROUS GOODS and so on...
Warnings in place will turn the information amber to alert the approaching expiration date, in order you could anticipate as needed.
Once expired, the information will then turn red.