Rafo00 suggested an app that can be used for dates, like real world apps for food delivery or car services. This will be integrated somewhere in the Sarah storyline. It'll likely be called Unter (and Unter Bites) and Rafo00 will be credited in the abouts of the app of the fictional app developer.
WayTooAwake2 suggested an app where you can have like a kinky 'gram for girls where you can follow them and have access to their selfies and stuff, extra content. I've been planning something like this for a while, it'll be called KinkLink and will credit WayTooAwake2 as the ingame developer of the app.
Cj97 and Vikrant will be credited as co-developers of the Rainforest app (it will link with your inventory system, which is coming by June I rekon). It's based on the bald guy billionaire's real world company with "day one delivery". It will be usable for dates, buying toys for girls which can then unlock parts of encounters you otherwise wouldn't be able to have. Electrostimulation, weird bondage stuff and stuff.