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

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

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. 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  

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

30. Beyond3D Forum
Forum has 55,387 topics.
http://forum.beyond3d.com/  

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

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

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

34. www.drone-forum.com
Forum has 73,962 posts.
https://www.drone-forum.com/forum/  

35. Parrot
Forum has 36,692 topics.
http://www.parrotforums.com/  

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

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

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

39. 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/  

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

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

42. 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/  

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

44. Fantasy Football - Footballguys Forums
Forum has 11,992,505 posts.
https://forums.footballguys.com/forum/  

45. 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/  

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

47. BleepingComputer.com
Forum has 632,287 members.
http://www.bleepingcomputer.com/forums/  

48. CNET
CNET editors and users share the top tech 'how to' tips and tricks with advice for getting the most out of all your gadgets.
https://forums.cnet.com/  

49. CivFanatics Forums
Largest fan site for Sid Meier's Civilization series.
http://forums.civfanatics.com/  

50. IGN Boards
IGN Boards is your #1 site for gaming forums.
https://www.ign.com/boards/