What do you think? Feedback on app UI/UX

That's a well-designed app. On your Sign Up page, I'd use Google and Facebook visually branded sign-up buttons that'd help the user quickly comprehend the options, as they're familiar with the services, instead of only reading text "Sign in with Google Account" and "Sign in with Facebook account". You could add an icon and color to the button that stands for Google and Facebook. To give you an idea, https://search.muz.li/YjY4ZWEwYmJm.

Very clean design. I love the buttons!

I like your bold style, clean design and interesting idea behind

My 2 cents:

• I was little bit lost with on-boarding - why is there connected Title "Get help..." with description: "stay connected...?" These two things are different - I would suggest to give your user main information in "Title" and then in "description" you should explain it little bit more. If it is needed (people hate to read, especially if they want to do the task. Imagine yourself in rush. Instead of doing the task they will spend time reading "on-boarding")
• as it was mentioned, it is better to use well known buttons (Facebook, Google) to ease the cognitive load
• Do you really need to ask users to confirm the password? Can you make the "sign up" easier - e.g. reducing needed information, possibility to sign up with biometric, ...The goal is to have as easy signup as it can be. This is the painful part of the experience
• "EDIT" on the 20th screen is so not clickable. It is too small.
• I am asking for help - it would be wise to use visual hierarchy and distinguish what information is more important than others.
  ...

Keep going guys! :)