A language file that comes with the app says it was written for this version. An imported file reports the keys added after the version it was written for. A translated line from an older file still shows.
Fieldwatch.apk SHA-256
70df1e20b44d918d2302ead2869c412f046fd08b4eb24849fa598416aeb0ce84
Signing certificate SHA-256 (Off Grid Pete LLC)
72f0da99823cdcb7a72b075a148a59cc3f01839734270f1ea59d597bd6732609