Westbright make an iOS app called Which Thing First? (WTF?)
We do not collect, use, save, or have access to any of your personal data recorded in Which Thing First?.
The lists of tasks in the app are stored only on your device. We don't process that information at all and have no access to it.
Up to v1.7 of WTF we used a popular third-party library called Flurry Analytics. We used this to get anonymised summary information such as how many items people were using, not the actual text of items.
From v1.8 onwards (released March 2024) we removed that Flurry library and have no analytics at present in the app.