Samples
Filters, on screen
Four screens and the queries behind them. The app is finishing up for iPhone and iPad — these are from the current build.
The library, sorted by colour
A three-filter Venn query
What one photo reveals
Subjects, recognised on-device
Reading a Venn query
Each filter you add is a circle. A photo has to satisfy every active filter to count, so the result is the region where all of them overlap — and the number sitting in that region is your match count, updated as you move anything.
Three is the ceiling on purpose. A fourth circle makes the diagram unreadable, and by then a query is usually narrow enough that adjusting a threshold beats adding another condition.