An app name has to survive two gauntlets: the trademark register and the app stores' own brand disputes. Apple and Google both pull listings when a rights-holder complains, so a name that conflicts can get your app delisted after you've paid for icons, screenshots, and launch. Checking first is cheap; a forced rename after your first reviews is not. This screens your app name against the live USPTO register by sound, spelling, and meaning and scores the conflict risk 0–100 with the matching marks shown.
A chatbot can't do this (it has no live register and hallucinates marks), and an exact-match search misses the sound-alikes and meaning-alikes that trigger most complaints. It's a preliminary screening signal, not legal advice, but it's the right first move before you commit a name to a store listing you can't easily change.
Which trademark class covers a mobile app
Downloadable apps sit in Class 009 (downloadable software). If your app is really a front end for a hosted service, Class 042 (software as a service) often applies too. Many app businesses file both. Screen broadly, but treat near-matches in 009/042 as the ones that count; the same word on an unrelated physical product is usually a different story.
What "confusingly similar" tends to mean for apps
App names live in an extremely crowded space, so small distinctions carry less weight and sound matters a lot: users say and search app names as much as they read them. King Digital's move to trademark "Candy" and enforce "Saga" across app titles is the classic cautionary tale: even everyday words get owned and policed here. A short, generic app name is both the easiest to collide with and the hardest to defend, which is exactly why screening by sound and meaning beats eyeballing the App Store.
Frequently asked questions
The App Store lets me publish the name. Doesn't that settle it?
No. Store approval is not a trademark check; rights-holders can still complain later and get the listing pulled.
Do I need to check both 009 and 042?
Screen across both: download vs hosted-service is a fuzzy line, and a serious name warrants a professional clearance search regardless.
Screen your name now
Check it against millions of live U.S. trademarks by sound, spelling, and meaning. Free, no account.