Best viewed in landscape

1 (not important at all)2345 (very important)
Recommended by a friend
Online ad
Testimonials of well-known persons
Testimonials of (unknown) users
List/Testimonials of corporate clients
Large community (e.g. on social network)
Mentioned in newspapers & magazines
Labels (ISO, GDPR-compliant, etc.)
Startup is crowd-funded
Highlighted promises of the startup ("We will never sell your data")
Swiss/EU based startup
Uses high level of encryption (RSA 2048, AES 512)
All data stored within CH/EU
Highly ranked in Google/App Store searches
Startup demonstrates expertise (artciles, blogs, etc.)
Rating of the app (in the app store)
That the app costs something and is not for free