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. 2021 Jun 15;9(6):e26262. doi: 10.2196/26262

Table 2.

Correlation matrix among MARS scores, price, number of downloads, and average user rating.

Characteristics MARSa scores Price Number of downloadsb Mean user rating

1 2 3 4
MARS scores

Engagement c






Functionality 0.68d





Aesthetics 0.95e 0.80f




Information 0.68g 0.94h 0.82i


Price 0.36 0.48 0.54 0.70j

Number of downloadsb 0.30 0.32 0.25 0.18 –0.40
Average user rating 0.09 0.12 0.06 0.18 0.00 0.73k

aMARS: Mobile App Rating Scale.

bNumber of downloads was not available for the iOS platform.

cNot applicable.

dP=.09.

eP=.001.

fP=.03.

gP=.09.

hP=.002.

iP=.02.

jP=.08.

kP=.096.