The best alternatives to Affinity are Rushline, Yik Yak, and Sharrings. If these 3 options don't work for you, we've listed a few more alternatives below.
Collect all your Socials, Usernames and Links in one place. It is mainly focused on normal people who just want to share all their Gamertags, Social media Accounts or Links.
LocalBrackets is a community driven platform that offers people the opportunity to socialise with those who share their interests. It makes it easy for users to create, find & join brackets, and collaborate with ease, and helps communities foster & develop.
Use collAnon freely to have private discussions and confrontations based on temporary anonymity, where the focus is on what is answered instead of who is answering.
Write down you Gantt calendar event to follow through time, offline by default.
Take it to the gym hit that HIIT training with a good specialized timer!
The list of mini apps will grow, and I have no intention to stop :)