Data base for mobile health applications, which information was collected from the Google Play Store and updated, monthly, over 6 months and for the following variables: "Name" - Name of the app as it appears in Google Play Store; "Supplier" - App's supplier as it appears in Google Play Store; "MC/HF" - This column allows you to distinguish the two segments selected from the Google Play Store for the studie : medical care (MC) and health and fitness (HF); "Free_Paid" - This column allows you to distinguish paid apps and free apps; "O1" - Ranking of the app collected from the Google Play Store at the first moment of observation (month 1); "O2" - Ranking of the app collected from the Google Play Store at the second moment of observation (month 2); "O3" - Ranking of the app collected from the Google Play Store at the third moment of observation (month 3); "O4" - Ranking of the app collected from the Google Play Store at the fourth moment of observation (month 4) ; "O5" - Ranking of the app collected from the Google Play Store at the fifth moment of observation (month 5) ; "O6" - Ranking of the app collected from the Google Play Store at the sixth moment of observation (month 6); "P1" - Price of the paid apps collected from the Google Play Store at the first moment (month 1); "P2" - Price of the paid apps collected from the Google Play Store at the second moment (month 2); "P3" - Price of the paid apps collected from the Google Play Store at the third moment (month 3); "P4" - Price of the paid apps collected from the Google Play Store at the fourth moment (month 4); "P5" - Price of the paid apps collected from the Google Play Store at the fifth moment (month 5); "P6" - Price of the paid apps collected from the Google Play Store at the sixth moment (month 6); "PI1" - Price integrated in the free apps collected from the Google Play Store at the first moment (month 1); "PI2" - Price integrated in the free apps collected from the Google Play Store at the second moment (month 2); "PI3" - Price integrated in the free apps collected from the Google Play Store at the third moment (month 3); "PI4" - Price integrated in the free apps collected from the Google Play Store at the fourth moment (month 4); "PI5" - Price integrated in the free apps collected at from the Google Play Store the fifth moment (month 5); "PI6" - Price integrated in the free apps collected at from the Google Play Store the sixth moment (month 6); "PV1" - Present Version of the app collected from the Google Play Store at the first moment (month 1); "PV2" - Present Version of the app collected from the Google Play Store at the second moment (month 2); "PV3" - Present Version of the app collected from the Google Play Store at the third moment (month 3); "PV4" - Present Version of the app collected from the Google Play Store at the fourth moment (month 4); "PV5" - Present Version of the app collected from the Google Play Store at the fifth moment (month 5); "PV6" - Present Version of the app collected from the Google Play Store at the sixth moment (month 6); "Date1" - App update date collected from the Google Play Store at the first moment (month 1); "Date2" - App update date collected from the Google Play Store at the second moment (month 2); "Date3" - App update date collected from the Google Play Store at the third moment (month 3); "Date4" - App update date collected from the Google Play Store at the fourth moment (month 4); "Date5" - App update date collected from the Google Play Store at the fifth moment (month 5); "Date6" - App update date collected from the Google Play Store at the sixth moment (month 6); "Dwnl1" - Download class collected from the Google Play Store at the first moment (month 1) (D1 = 5 - 10, D2 = 10 - 50, D3 = 50 - 100, D4 = 100 - 500, D5 = 500 - 1.000, D6 = 1.000 - 5.000, D7 = 5.000 - 10.000, D8 = 10.000 - 50.000, D9 = 50.000 - 100.000, D10 = 100.000 - 500.000, D11 = 500.000 - 1.000.000, D12 = 1.000.000 - 5.000.000, D13 = 5.000.000 - 10.000.000, D14 = 10.000.000 - 50.000.000, D15 = 50.000.000 - 100.000.000, D16 = 100.000.000 - 500.000.000); "Dwnl2" - Download class collected from the Google Play Store at the second moment (month 2) (D1 = 5 - 10, D2 = 10 - 50, D3 = 50 - 100, D4 = 100 - 500, D5 = 500 - 1.000, D6 = 1.000 - 5.000, D7 = 5.000 - 10.000, D8 = 10.000 - 50.000, D9 = 50.000 - 100.000, D10 = 100.000 - 500.000, D11 = 500.000 - 1.000.000, D12 = 1.000.000 - 5.000.000, D13 = 5.000.000 - 10.000.000, D14 = 10.000.000 - 50.000.000, D15 = 50.000.000 - 100.000.000, D16 = 100.000.000 - 500.000.000); "Dwnl3" - Download class collected from the Google Play Store at the third moment (month 3) (D1 = 5 - 10, D2 = 10 - 50, D3 = 50 - 100, D4 = 100 - 500, D5 = 500 - 1.000, D6 = 1.000 - 5.000, D7 = 5.000 - 10.000, D8 = 10.000 - 50.000, D9 = 50.000 - 100.000, D10 = 100.000 - 500.000, D11 = 500.000 - 1.000.000, D12 = 1.000.000 - 5.000.000, D13 = 5.000.000 - 10.000.000, D14 = 10.000.000 - 50.000.000, D15 = 50.000.000 - 100.000.000, D16 = 100.000.000 - 500.000.000); "Dwnl4" - Download class collected from the Google Play Store at the fourth moment (month 4) (D1 = 5 - 10, D2 = 10 - 50, D3 = 50 - 100, D4 = 100 - 500, D5 = 500 - 1.000, D6 = 1.000 - 5.000, D7 = 5.000 - 10.000, D8 = 10.000 - 50.000, D9 = 50.000 - 100.000, D10 = 100.000 - 500.000, D11 = 500.000 - 1.000.000, D12 = 1.000.000 - 5.000.000, D13 = 5.000.000 - 10.000.000, D14 = 10.000.000 - 50.000.000, D15 = 50.000.000 - 100.000.000, D16 = 100.000.000 - 500.000.000); "Dwnl5" - Download class collected from the Google Play Store at the fifth moment (month 5) (D1 = 5 - 10, D2 = 10 - 50, D3 = 50 - 100, D4 = 100 - 500, D5 = 500 - 1.000, D6 = 1.000 - 5.000, D7 = 5.000 - 10.000, D8 = 10.000 - 50.000, D9 = 50.000 - 100.000, D10 = 100.000 - 500.000, D11 = 500.000 - 1.000.000, D12 = 1.000.000 - 5.000.000, D13 = 5.000.000 - 10.000.000, D14 = 10.000.000 - 50.000.000, D15 = 50.000.000 - 100.000.000, D16 = 100.000.000 - 500.000.000); "Dwnl6" - Download class collected from the Google Play Store at the fifth moment (month 6) (D1 = 5 - 10, D2 = 10 - 50, D3 = 50 - 100, D4 = 100 - 500, D5 = 500 - 1.000, D6 = 1.000 - 5.000, D7 = 5.000 - 10.000, D8 = 10.000 - 50.000, D9 = 50.000 - 100.000, D10 = 100.000 - 500.000, D11 = 500.000 - 1.000.000, D12 = 1.000.000 - 5.000.000, D13 = 5.000.000 - 10.000.000, D14 = 10.000.000 - 50.000.000, D15 = 50.000.000 - 100.000.000, D16 = 100.000.000 - 500.000.000); "Version" - Android version required to use the app collected from the Google Play Store