Forums in the Android App Niche

1. PPCGeeks
Forum has 2,106,785 posts.
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
Just missed out on a spot in the top 25.
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
This is a discussion forum powered by vBulletin. To find out about vBulletin, go to http://www.vbulletin.com/ .
https://forums.windrivers.com/forum.php  

10. Google Community
Forum has 23,895 topics.
http://www.gforums.net/  

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

12. Hi-Def Ninja Forums
Forum has 936,506 posts.
http://www.hidefninja.com/forums/  

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

14. wololo.net/talk
Forum has 302,229 posts.
https://wololo.net/talk/  

15. 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/  

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

19. 7 Cups
https://www.7cups.com/home/  

20. MobileRead Forums
MobileRead - the resource for mobile geeks seeking information and advice for keeping their gadgets happy.
http://www.mobileread.com/forums/  

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

22. bit-tech.net Forums
bit-tech.net's discussion forum. Dedicated to pc case mods, computer hardware, overclocking and gaming.
http://forums.bit-tech.net/  

23. www.go4expert.com
Forum has 96,809 posts.
https://www.go4expert.com/forums/  

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

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

26. 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  

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

28. 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  

29. 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  

30. TheSite.org
Community discussion from TheSite.org. Providing advice and moderated discussion for young people aged 16 - 25 years old, providing a safe place to ask difficult questions or just chat with friends
http://vbulletin.thesite.org/  

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

32. Beyond3D Forum
The world's best online 3D graphics discussion!
http://forum.beyond3d.com/  

33. Wilders Security Forums
Forum has 133,452 members.
http://www.wilderssecurity.com/  

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

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

36. www.drone-forum.com
Forum has 11,210 members.
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
Forum has 7,067,958 posts.
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
Forum has 616,734 topics.
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. Small-Business-Forum.net
We are a friendly community of small business owners sharing our experience to help others, discuss issues, talk shop, and learn more about running and growing our businesses.
https://www.small-business-forum.net/  

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
Forum has 1,056,071 topics.
http://forums.overclockers.co.uk/