Forums in the Android App Niche

1. PPCGeeks
PPCGeeks is a site for PPC owners with discussion, reviews, news, links, downloads, and much much more. We cover Windows Mobile, Android, Windows Phone 7, Blackberry, iOS, and tablets.
http://forum.ppcgeeks.com/  

2. Parrot Pilots Drone Forum
Parrot Drone forum and discussions around your favorite Parrot drones including Anafi, Bepop, AR, FPV, Disco and more!
https://parrotpilots.com/  

3. Mountain Project
Find rock climbing routes, photos, and guides for every state, along with experiences and advice from fellow climbers.
https://www.mountainproject.com/forum/  

4. Games Dreams
Welcome to Games Dreams - Discussion forums for Facebook games, browsers games, MMO games, flash games, android games, iPhone iPad games, etc.
https://gamesdreams.com/  

5. Geocaching Forums
https://forums.groundspeak.com/GC/  

6. Tech Support Guy
Free computer help.
http://forums.techguy.org/  

7. www.skimble.com
Skimble forums.
https://www.skimble.com/workout-trainer/forums/  

8. GSM-Forum
Welcome to gsm-forum, here you find all infos about android, windows mobiles, iphones, flashing, repair, unlocking, root, development software, firmwares.
https://forum.gsmhosting.com/vbb/  

9. WinDrivers Computer Tech Suppo
Just made it into the top 75!
https://forums.windrivers.com/forum.php  

10. Google Community
The #1 Unofficial Google Forum to discuss and chat on the use of Google products and services, such as Gmail, AdWords, AdSense, Analytics and YouTube.
http://www.gforums.net/  

11. Hi-Def Ninja Forums
Hi-Def Ninja: SteelBook Blu-ray News, Home Theater, Reviews, Hot Deals, Digibook, Blu-ray Collectors Forum Community
http://www.hidefninja.com/forums/  

12. DonationCoder.com
DonationCoder.com Forum - Index
https://www.donationcoder.com/forum/  

13. Supercell Community Forums
Supercell's official Community Forums for all fans of Clash of Clans and Hay Day! Join today!
http://forum.supercell.net/forum.php  

14. Freefly Forum
Freefly systems, builder of the Cinestar series of remote control muti-rotor hexacopters and octocopters and camera gimbal mounts
https://forum.freeflysystems.com/  

15. Whirlpool.net.au
https://forums.whirlpool.net.au/  

16. LIVESTRONG.COM
LIVESTRONG’s Webby-Award winning MyPlate App is the fastest and easiest way to lose weight and improve your health! Join millions who have lost weight with MyPlate
http://www.caloriesperhour.com/forums/  

17. Neowin
News, Reviews & Betas which includes large community peer support
https://www.neowin.net/forum/  

18. Java Forums at the Big Moose S
https://www.coderanch.com/forums/  

19. forums.crackberry.com
The #1 Community Forum for BlackBerry Users & Abusers! BlackBerry Help, Discussion, Rumors and More...
https://forums.crackberry.com/  

20. MobileRead Forums
Forum has 251,147 topics.
http://www.mobileread.com/forums/  

21. wololo.net/talk
Forum has 62,852 members.
https://wololo.net/talk/  

22. DJI Spark Drone Forum
DJI Spark Drone Discussions, Support, Forum and Online Community
https://sparkpilots.com/  

23. AfterDawn Discussion Forums
Massive tech discussion forums, focusing on digital video, consoles, PCs and software problems.
http://forums.afterdawn.com/  

24. www.go4expert.com
Forum has 97,149 posts.
https://www.go4expert.com/forums/  

25. www.dreamincode.net
https://www.dreamincode.net/forums/  

26. Student Doctor Network
A nonprofit community of pre-health and health professional students.
https://forums.studentdoctor.net/  

27. www.daniweb.com
Programming Forum - Our Programming forum category encompasses application development, web development, programming theory, and everything in between.
https://www.daniweb.com/programming/4  

28. Sports Card
SportsCardForum is your source for everything related to sports cards for collectors and non-collectors alike!
https://www.sportscardforum.com/forum.php  

29. The Money Shed
The UK's largest community based forum dedicated to earning money from home online. Make money now, save money and share ideas!
https://www.themoneyshed.co.uk/index.php  

30. Autel Drone Forum
Autel Evo and X-Star Drone Forum, Discussion, Photos, Videos and More!
https://autelpilots.com/  

31. Storm8 Community Forums
The official forum for Storm8! Come talk about your favorite games!
https://forums.storm8.com/forum.php  

32. Wilders Security Forums
Community Based Discussions about Online Privacy, Security and Data Protection
http://www.wilderssecurity.com/  

33. The Skeptics Society Forum
Forum has 780,026 posts.
https://www.skepticforum.com/  

34. iPhone, iPad, iPod Forums at i
Discuss and get help with iPhone, iPad, iPod touch, iOS, and iCloud
https://forums.imore.com/  

35. BeerSmith Home Brewing Forum
BeerSmith discussion forum
https://www.beersmith.com/forum/index.php  

36. www.drone-forum.com
Forum has 73,976 posts.
https://www.drone-forum.com/forum/  

37. Parrot
Parrot Forums covers the entire range of Parrot ownership and care. All parrot families are discussed as well as pet birds in general.
http://www.parrotforums.com/  

38. WWW.RLFANS.COM
https://forums.rlfans.com/  

39. Overclockers Forums
Overclockers Forum is the number one source for hardware related discussion.
https://www.overclockers.com/forums/  

40. WebRats Fun and stupidity at i
Forum has 2,676,550 posts.
https://forums.webrats.com/  

41. Canadian TV, Computing and Home Theatre Forums
A forum community dedicated to Canadian TV, computing and home theatre owners and enthusiasts. Come join the discussion about home audio/video, displays, troubleshooting, styles, projects, DIY’s,...
http://www.digitalhome.ca/forum/  

42. UAV Coach Community Forum
https://community.uavcoach.com/  

43. iSTORYA.NET
Cebu's Most Active and the Philippines' Strongest Online Community!
https://www.istorya.net/forums/  

44. Virtual Dr Forums-Computer Tec
This is a discussion forum for general computer PC help and troubleshooting
https://discussions.virtualdr.com/forum.php  

45. MacRumors Forums
Apple news and rumor discussion
http://forums.macrumors.com/  

46. VBForums
Visual Basic Discussions plus .NET, C#, game programming, and more (http://www.VBForums.com)
https://www.vbforums.com/forum.php  

47. Fantasy Football - Footballguys Forums
Many people go football crazy over sports forums like this one.
https://forums.footballguys.com/forum/  

48. DSL Reports
ISP discussion forums, broadband news, information and community
https://www.dslreports.com/forums/all  

49. BariatricPal
Visit the world’s largest weight loss surgery forums to discuss diets, procedures, and related bariatric topics. Join now for free and lose more weight with peer support!
http://www.lapbandtalk.com/  

50. Overclockers UK Forums
Overclockers UK Forum powered by Xenforo
http://forums.overclockers.co.uk/