Garmin Pilot and Foreflight both offer MOS weather in the app in addition to METAR and TAF data. Coming from Garmin Pilot, I find the MOS data extremely helpful in rural areas where there is no nearby TAF. The MOS data is a free text product from the NWS, althought it looks like they may be ending the MOS and switching entirely to the National Blend of Models:
https://www.weather.gov/mdl/nbm_home