OpenL should be marked with anti-features
OpenL on F-Droid asserts it is an open source "version" of the DeepL service. However, the GitHub page states more accurately that it is just "the unofficial Android application of deepl.com website" — so, simply a frontend to a third-party service.
The Wikipedia article about this service states
The service uses convolutional neural networks built on the Linguee database with a proprietary approach which is not made public or published
and
Both DeepL Pro and DeepL Translator (free) prohibit translating "texts containing personal data of any kind". Unlike the freemium version, the Pro version advertises that it does not store the texts being translated.
I think this would call for the NonFreeNet anti-feature, and, given the latter statement, quite possibly the Tracking anti-feature.