Top 40 domain name sales in 2014 ending with APP suffix.
Here they are, enjoy!

app.nl 18500 EUR
liveapp.com 9800 USD
forecastapp.com 7300 USD
boatapp.com 7000 USD
constructionapp.com 6500 USD
careapp.com 4999 USD
buildapp.com 4000 USD
blackapp.com 3999 USD
myschoolapp.com 3500 USD
financeapp.nl 3000 EUR
321app.com 3000 USD
followmeapp.com 2795 USD
pokerapp.com 2501 USD
financeapp.co.uk 2500 EUR
followapp.net 2500 USD
contractorapp.com 2500 USD
distroapp.com 2500 USD
3dapp.com 2427 USD
7app.com 2410 USD
sketchapp.com 2208 USD
steelapp.com 2100 USD
freemobileapp.com 2000 USD
dinetimeapp.com 2000 USD
feedbapp.com 1995 USD
leapp.de 1765 EUR
vaporapp.com 1700 USD
flamingoapp.com 1699 USD
thriveapp.com 1650 USD
app.reviews 1525 USD
adsapp.com 1400 USD
boosterapp.com 1399 USD
salaryapp.com 1295 USD
yesapp.com 1211 USD
stackapp.com 1200 USD
makemoneyapp.com 1200 USD
jobsearchapp.com 1199 USD
mediaapp.com 1105 USD
famousapp.com 1099 USD
travelapp.net 1000 USD
conferenceapp.co.uk 1000 GBP