Free app/business Ideas! What to choose ?

TLDR: I have a few app/business ideas and I don't know which one is better to pursue, I need your opinion to help me and maybe you too. Scroll down to the ideas.

Hello , as I wrote in the introduction post ( July edition ), I am a React Native Developer, currently remotely working 40h/week at a stable job enjoying what I'm doing.

I really like my job and at this moment I'm not able to quit it to pursue any business idea, I can do it up to max 10-20 hours /week , because I am a father of 10 month old son and as every young parent - I don't have time.

Although I am enjoying what I'm doing and I like my job, idea of having something run by myself has always been something I was dreaming about. I have a few ideas and I don't really know which one to pursue, basically any of this would make me happy.
I ran a blog last year which is available here: https://selfmadedeveloper.netlify.com, but after I became a father and dropped this idea for a while I had lost interest in going back to it.

I think I would be more interested in pursuing one of my app ideas, but I don't know which one to choose from, so here they are ( randomly ordered) :

1. Baby Mood - a simple app idea, that will help to monitor your Baby's mood and rank it day by day. Rating and writing short notes about how the day was could help with better understanding the child.

2. Dev Notes - VSC extension in which you copy a part of code with a comment and send it to the app and you have saved a short note with particularly interesting code snippet which you could reuse and reference later. Inside the app for reading the notes there would be an option to categorize the notes and search for a particular category

3. Man up - App with reminders about important things in your daily life , secretly reminding you about important dates, chores, etc. This could also include very intimate notes that you don't like to put inside your regular TODO app or Calendar

4. Walk The Dog - App for monitoring your dogs health by tracking the time and distance you walked. Monitoring poop/pee on each walk in order to have insight about your dogs health.

5. Code Review - U2U service for more experienced programmers and beginners for sending pull requests to have a code review. I remember when I started coding I didn't know anyhing about good practices etc, that's why I thought about this - that could be subscription based model business or totally free to create exposure for developers.

6. Keep me accountable - public Todo List Social app, people cheering each other and keeping accountable for reaching goals
   Posting videos and photos to keep accountability level
   Honest social network.

7. Hourly Rate App - Simple app to calculate your hourly rate for a service. Also evaluation of a service for a flat rate. Help with estimation and pricing. Work time tracker. Client Logger - save database. Different client and different rates logger. Suggestions for upgrading Hourly Rate. Product pricing. Maybe integration with toggle? Estimated earnings for a week / month Setting up goals. Smart quotes to help you rethink your work. Advices for freelancers about other avaliable tools and inspiration. In app advertising for self development books. Marketing ideas. Writing Down estimated hours for project. Counting predict of earnings from a project. Counting profit - taxes - expenses. Project cost estimations. Product costs estimations & pricing subscription model app -awesome free features + premium ones for a paid subscription

8. My idea - App for writing down ideas for an app or business.
   Nice design for writing down ideas, adding features.
   helpful questions - for who this app or business would be, what's the target group, how would it make money?
   What would I need to do?
   1 sentence app explanation
   Quick way to save your app/business ideas.
   Social media aspect with evaluation of the idea with trusted people.

9. How does it sound ? - App Idea to help your children understand the world of sound more. Speech recognition app, for example asking something like this: "Hey App, How does a whale sounds ? " would give you a preview of a sound that whales are making.

This post is very long, so I am not expecting from you to actually read it all, but if you've read it - thank you very much, your opinion on any of this idea will be very helpful for me.

I basically could start working at any of this and be happy.
I don't have specific expectations for making it , but making 2000$/month and more means that I can easily quit my job and start working on it full time.

Thank you for any feedback in advance!