Approach
Three promises,
and what they cost.
No ads
Not a banner, not an interstitial, not a “rewarded” video. An app that sells your attention has to keep taking it, and every design decision after that point bends towards holding you longer. These apps are meant to be closed.
No account required to try
You should be able to see what an app does before you hand over anything. None of these apps put a sign-up screen between you and the thing you came for. Where an app genuinely needs an identity — sharing your location with your family, for instance — it asks at the moment it needs it, and not before.
Stated, not implied
It would be easy to write “your data never leaves your phone.” For most of these apps it is true. It is not true for all of them: Dulle shares live location because that is the entire point of it, and Outpost keeps an anonymous score on a server. One claim you could disprove would poison the ones that are true.
So instead: every app links to its own privacy policy from its page, and the policy says what that particular app stores and where. If something there is unclear, that is a bug — write and say so.
Small on purpose
Ten apps by one person only works if each one stays small enough to hold in your head. That is a limit, not a marketing line: it is why these apps do one thing, and why they get updates years after a bigger studio would have moved on.