Naming an app in 2026 is a three-lane collision you can't afford to lose. The name has to clear the App Store's 30-character limit, survive a trademark search, be unique enough that the App Store won't reject it — and ideally sit on a .com domain you can actually buy. Most founders check exactly one of those three things and learn about the other two the hard way: a rejection email from App Review, or a $2,000 domain on the aftermarket that someone else's naming tool invented.
This guide walks you through all three checks — the same triple-screening workflow the old Panabee app-name tool pioneered before it was effectively abandoned — and gives you a faster way to do it today: Nomlen's free AI name generator, which pairs unlimited AI-generated name ideas with an instant domain-availability check so every candidate you shortlist is actually ownable.
Why an app name needs three checks, not one
Pick a name that fails any one of these and you pay for it later — in rebrands, lost reviews, or domain ransom:
- Store availability. The Apple App Store and Google Play each carry roughly two million apps — Apple's 2025 App Store Transparency Report lists 2,172,472 total apps on the store, while Google Play sits near 1.8 million after a 47% purge of low-quality listings since early 2024 (Appfigures, via TechCrunch, April 2025). An app name that's too close to an existing hit gets buried in search and risks an App Store review flag.
- Trademark clearance. A name that's available on both stores can still belong to someone else's registered trademark. Store availability is not legal clearance — never confuse the two.
- Domain availability. Your app still lives on the web: the landing page, the press kit, the support page, the deep links. If the .com is taken by a squatter, your launch marketing gets a second-rate domain and a confused audience.
The efficient order is: generate ideas → check the domain first (fastest disqualifier) → check the stores → clear the trademark. That's exactly the workflow below.
The 30-character rule: what both stores actually allow
Both major stores enforce a hard 30-character cap on app names — the App Store has since 2016, and Google Play cut from 50 to 30 in April 2021. The surrounding fields differ in ways that change your naming strategy:
Listing field | Apple App Store | Google Play |
|---|---|---|
App name / title | 30 characters | 30 characters |
Subtitle / short description | Subtitle: 30 characters | Short description: 80 characters |
Keyword field | 100 characters (comma-separated) | None — keywords pulled from title + description |
Description | 4,000 characters — not indexed for search | 4,000 characters — indexed for search |
What it means for naming | Name + subtitle + keywords (160 chars) is the entire indexed budget — the name carries search weight | The 30-char title carries ranking signal; stuff keywords in the 4,000-char description |
The takeaway: your app name is never "just" a name. On both stores it's the single strongest keyword-ranking signal you control. A name like Sleepify – White Noise Sleep (27 characters) does double duty: brand plus the exact terms people search.
How to check if an app name is taken (the 4-step screen)
Run every shortlisted name through this sequence before you fall in love with it:
- Search both stores directly. Type the exact name into the App Store and Google Play search. Look for exact matches and confusingly similar names — "Calm" and "Kalm" are a collision in the store's eyes and the user's.
- Search the domain. Check the exact-match .com, then .app (Google's TLD built specifically for apps — a natural fit) and .io. If the .com is taken, decide before you invest in branding whether the alternative TLD is acceptable or the name is dead.
- Search the trademark database. In the US, that's the USPTO's trademark search (which replaced TESS in November 2023). Other regions have their own registries. Store search and trademark search are different questions — run both.
- Check social handles. A name you can't own on X, Instagram, TikTok and YouTube is a name that fragments your brand from day one.
Skip step 2 and you get the classic founder story: great name, available everywhere, app published — and the .com redirects to a domain-for-sale page asking $8,000.
App naming frameworks that actually work
The highest-performing app names follow a small set of proven patterns:
- Brand + keyword suffix. "Notion – Notes & Docs", "Headspace: Meditation & Sleep". Brandable invented word first, searchable keywords after the dash. Best of both worlds: defensible brand, discoverable listing.
- Compound real words. "Houseparty", "Facetune", "Snapseed". Two familiar words fused into one pronounceable name — easy to spell when heard aloud, which matters because most app discovery happens by voice and word of mouth.
- Invented but pronounceable. "Shazam", "Duolingo", "Tumblr". Unique enough to trademark and to rank #1 for their own name on day one — the fastest way to own your brand search results.
- Keyword-first (utility apps). "Scanner App – PDF & Document". Weaker as a brand, stronger for search volume in a single function. Works for utilities; fails for anything that needs loyalty.
Two rules cut across all four patterns: keep it sayable on the first try (if a podcast host can't pronounce it, users can't recommend it) and stay under 30 characters with room for the keyword suffix — the keyword half only works if there's space for it.
How the free Nomlen app name workflow works
Nomlen's business name generator plus the AI domain GPT tool combine into a purpose-built app-naming workflow:
- Describe your app in a sentence. "A habit tracker for remote workers" beats a bare keyword — the AI generates names tuned to the concept, not just the dictionary.
- Generate unlimited candidates across naming styles: invented words, compounds, blends, keyword-forward.
- Every candidate is checked live against registry data across hundreds of TLDs — the dead-ends (premium aftermarket, taken domains) are visible instantly instead of discovered at checkout.
- Shortlist 5–10 that survived the domain check, then run the store + trademark screens from the section above on those finalists only. That's the order that wastes the least effort.
It's free, there's no signup, and there's no usage cap on generation — you can iterate on the name for as long as the naming session lasts.
App name red flags: kill these instantly
Red flag | Why it's fatal |
|---|---|
Ends in "-ly" or "-r" to force availability | The trick stopped working in 2014. You're inheriting someone else's typo traffic, not a brand. |
Needs spelling every time | "Is it with a K or a C?" — every confused search is a lost install. |
Over 30 characters with the subtitle | You can't ship it. The store truncates, and you lose the keyword suffix that made it discoverable. |
.com taken by a parked page, and the name is generic | A generic name on a weak TLD has neither brand protection nor type-in traffic. Pick a different name. |
Matches a trademarked brand in your category | App Review can reject you, and the trademark owner can have your listing pulled. This is the one that costs lawyers' fees. |
Emoji or special characters in the name | Both stores reject them in the title field, and they break voice search completely. |
FAQs
How do I check if an app name is already taken?
Search the exact name in the App Store and Google Play, then check the matching .com and .app domains, then run a trademark search (in the US, the USPTO's trademark search, which replaced TESS in November 2023). All three checks are different questions — passing one doesn't mean you pass the others.
Can two apps have the same name?
On the App Store, exact duplicate names are rejected by App Review within the same storefront. On Google Play there's no hard uniqueness rule, but a duplicate name is nearly impossible to find in search — effectively a death sentence for discovery. Trademark conflicts apply regardless of store rules.
What is the character limit for app names?
Both the Apple App Store and Google Play cap app titles at 30 characters. The App Store adds a 30-character subtitle and a 100-character keyword field; Google Play adds an 80-character short description and indexes the full 4,000-character description.
Should my app name match my domain name?
Yes, whenever possible. Users who hear your app name on a podcast will type it into a browser before they open a store — if the domain is someone else's parked page, you lose them. Match the brand to the exact .com first, .app second.
Is .app a good domain for a mobile app?
.app is Google's purpose-built TLD for applications and requires HTTPS by default, which is a nice trust signal. It works well as a secondary domain or landing page. But the .com is still the default users type — secure both if you can.
Can I change my app name after launch?
Yes — both stores let you edit the title/subtitle when submitting an update. But changing the name resets your brand-search ranking and confuses existing users; reviews stay, but keyword equity restarts. Getting it right before launch is far cheaper.
Do I need a trademark for my app name?
Not to publish, but strongly recommended before you spend on marketing or identity work. A trademark is the only check that gives you legal standing if a copycat appears — store search can't do that. At minimum, search the database before you commit.
What happened to Panabee's app name generator?
Panabee pivoted its main site toward AI stock news, and its app-name availability generator (once the go-to for checking store availability alongside domains) is effectively abandoned — stale content, no updates. Its playbook (domain + App Store + Google Play checks together) is still the right workflow; it's just no longer maintained by them.
Bottom line: your app name is a brand, a store keyword, a trademark candidate and a domain all at once — and it's the only thing that has to be. Generate freely, but commit only after all three checks clear. Start with the free Nomlen name generator, shortlist the candidates with live-available domains, and run the store and trademark screens on your finalists. Thirty minutes of discipline here saves you from the most expensive word in startups: "rebrand."
Try it: Generate fresh candidates and check their domains instantly with the startup name generator.
