As of version 1.3.4 (released on the 5th of July 2018), we do not include Fabric in the app anymore and do not collect any analytics.
Information we collect
The Putty iOS app includes portions of Twitter’s Fabric to provide crash reporting and basic analytics to help us improve the app. These are aggregate, anonymous statistics, such as the percentage of users who use particular features.
Putty does not share your email address or any other personal data with Twitter. Other data, such as brushes or materials used, may be shared anonymously for aggregate statistical analysis to further improve the app.