I was recently told that every time we make a to-do list app or a weather app, a koala dies somewhere. Let's stop this together!

Below are some app ideas that loosely came to my mind. I added emojis to make it easier for you to identify the apps that could become your next passion projects:
💕 helping others / more friends
🌍 sustainable world
👩‍⚖️ social justice
🧞‍♂️ everyday practical
🎁 misc

1. Metro locator 👩‍⚖️ 🧞‍♂️ 💕

• an app locating the closest subway stop that has an elevator

2.Food-sharing app 🌍 💕

• share food you won’t eat
• bonus: maybe an option for restaurants to join and a separate UI?

3. Social gatherings 💕

• an app that helps you engage strangers in random impromptu games/challenges/conversations -- it could use geolocation to see whether another app user is in proximity

4. Brain teasers 🧞‍♂️

• an app for bored people that sends fun activities, brain teasers or goofy challenges

5. Teamwork is Dreamwork 🧞‍♂️ 💕

• pair-programming app that helps you set up fruitful collaboration
• bonus: accountability check

6. Hands-free game 🎁

• a hands-free game like this one: https://duckhunt-handsfree.glitch.me

7. Text generator 🎁

• a lorem ipsum generator like https://www.affirmations.madewithtech.com/

8. Coding quiz 🧞‍♂️ 💕

• a quiz-based site that challenges you to transform functions to arrow functions, to use destructuring or translate methods between js and ruby

9. Sentiment-based news site 🧞‍♂️

• a news site that uses IBM Watson to determine if a given news piece feels angry, etc.

10. Money counting app 🧞‍♂️ 👩‍⚖️ 💕

• an app that helps people with dyscalculia to determine how much money they have in the wallet

11. Art generator 🎁

• a page that generates a Yayoi Kusama random painting. Or Alma Thomas. Or Piet Mondrian.

12. Bookmark extension 🧞‍♂️

• an app/extension that helps you save a link to your bookmarks
• bonus: it could also work on slack

13. Fluffy Alexa skill 🧞‍♂️ 💕

• an Alexa Skill that tells you nice things every day
• bonus: maybe they are in some way personalized?

14. Online treasure hunt 🎁

• bonus: 💕 with an option to communicate with others? Or, a leaderboard?

15. Carbon footprint calculator 🌍

• an app that calculates how much carbon footprint your grocery shopping/general habits contribute to and educates you on eco-lifestyle

16. Water waste calculator 🌍

• an app that calculates how much water your clothes used to be created (and maybe invites others to do the same?)

17. Timeline! 🎁

• an interactive timeline of some music history / game history / social justice stuff

18. Front page generator 🎁

• a website that creates a newspaper front page with news of your choosing or with media uploaded by you

19. City trivia 🎁

• an app for people who just moved to the city that responds to geolocation and sends out facts about the area

20. Browser history detective 🎁

• OMG imagine a game in which you are given someone’s browser search history and on that basis invites you to make some guesses about the person

21. Gamer's bingo board 👩‍⚖️

• A gaming reddit scanning app that looks for most common sexist comments, then checks a bingo board and sends automatic comment if more than 30% of the board is checked, like this: https://www.pinterest.com/pin/195625177536611475/

22. Making sidewalks even 👩‍⚖️ 💕

• an app that helps you report uneven sidewalks instantly, with a click

23. Trading app 🎁

• a sneakers/Magic the Gathering card trading app

24. Film production call sheets 🎁

• an app that helps you builds a call sheet for film production

25. End subscription? 🧞‍♂️

• an app that helps you keep track of your online subscriptions
• bonus: it sends notifications when the free trial is done or sets a reminder on your phone (in your calendar app?)

26. Bug tracker 💕

• a cute app that helps you and your team log the errors/bugs you got this week and invites you to celebrate as a team every 100th bug

27. Trivia 🎁

• an app that sends you push notifications/emails every day with some very specific trivia

28. More app ideas 🎁 🧞‍♂️ 💕

• an app that generates app ideas

29. Plant parenthood 🧞‍♂️

• an app that reminds you to water/move your plants.

30. Horoscopes 🎁

• mad-libs horoscope app

31. To the loo 👩‍⚖️ 🧞‍♂️ 💕

• An app that helps you locate the nearest available bathroom, allows you to rate its cleanliness/accessibility, leave comments + has a filter for gender-neutral bathrooms

32. Data Viz 🎁 👩‍⚖️

• Data visualization of any of the OpenDataNYC

33. Dating app for social justice warriors 👩‍⚖️ 🧞‍♂️ 💕

34. Humane meetings 🧞‍♂️ 💕

• a meeting scheduling app that forces you to include in the agenda 15-minute breaks every 3 hours and an hour-long lunch break

35. Better carpooling 👩‍⚖️ 🧞‍♂️ 💕

• a carpooling app that prevents drivers from canceling on people with disabilities or PoC

36. Loving chatbot 👩‍⚖️ 💕

• a Slack chatbot that corrects your messages with regards to inclusive language

37. Weather app?? 🧞‍♂️

• a weather app (hold off your judgment) that actually tells you how to dress -- New York's 50F is very different from Berlin's 50F due to humidity