Best Subreddits to Promote a Mobile App

Yes, but only in a narrow, explicit lane. Rule 9 says, "Self-promotion is allowed on Sundays, only for developers," and the sidebar adds that it is "strictly reserved for app developers and must be in the form of a self-post." Outside that, the rules say, "No spam, self-promotion of your own blogs/websites/videos, or surveys are allowed."

Yes, you can promote your project in r/SideProject, because the community description and sidebar explicitly say it is for sharing side projects and receiving constructive feedback. The stated requirement is the submission format: "When submitting a link to a project or startup, please use this format: [Project name] - [Short description]."

Yes, but only under clear limits. Rule 4 says, "Self-promotion is allowed to some extent" and requires more substance for paid products or services, while Rule 7 says, "Only post your app on Saturday" and limits you to one app post, once a year. Blatant ads or spam may be removed, and posts about apps have a narrow allowed lane.

Yes, you can promote your product in r/alphaandbetausers, but only if it fits the subreddit’s testing purpose and follows the posting rules. Posts must include a link to a product that is ready to be tested, use stage and system tags, include a description, and must not be just an email signup, launch waitlist, or future testing application page; spam, non-alpha/beta links, and NSFW products can be removed.

You can promote your own app in r/Android only under narrow conditions in Rule 4, "No self-promotional spamming." Developers may post their own apps only if the post is a self post with a detailed description, the account is at least three months old with a reasonable posting history on r/Android, and the developer actively interacts in the thread; website, blog, and YouTube channel owners are generally not allowed to post their own content.

You generally cannot promote your product in r/SomebodyMakeThis. Rule 2, "No Promotions," says posts promoting "Products, Ideas, or Platforms" for selling or enrolling users are not permitted, and it only allows certain promotions inside a pinned thread in the Highlights section. The public description also says, "Did you create something? Share it with us in the monthly Creator Showcase thread!"

No, you cannot promote your product in r/productivity. The rules explicitly say "No Advertising" and "Self-promotion is not allowed here in any form," and they also include DM advertising, referral codes, soliciting, surveying, and promotional/link farming as violations.

No. Rule 2, "Self-Promotion & Dev Content," says, "Any self-promotion, tester requests, new app ideas or app feedback are not allowed in r/androidapps." The same rule says this content should go to the sister subreddit r/droidappshowcase instead.

No, you cannot promote your product in r/androiddev if that means promoting an app. Rule 2 explicitly says, "No App Promotion or Recruiting Testers" and states that "Sharing applications or recruiting testers is not allowed." Posts also have to be related to native Android development and generally applicable to the community, not sales, marketing, or a personal case.