TLD Notes

Field Guide to Domains

Field Guide to Domains — A TLD Explorer

This site is an observational record and does not endorse any specific domain.

.app

New gTLD Diversification (2016–2022)

Managed by Google Registry. Ideal for mobile/web app landing pages.

Observer's Note

A sibling species to .dev. Adapted to a more consumer-facing niche.

Vibe Tags

App HTTPS Required Modern

Observed Specimens

Domain choices shown here reflect each organization's own decisions and are not endorsements by this site.

linear.app Linear
SaaS / Web Services

Project management tool known for its fast UI.

Product name maps directly to the domain. .app reinforces the application feel.

cash.app Cash App (Block)
Finance / FinTech

P2P payment app under Block (formerly Square).

cash + .app intuitively communicates the service. A prime example.

bsky.app Bluesky
Social / Community

Decentralized social network using the AT Protocol.

bsky abbreviation + .app. A natural choice for a tech-oriented social network.

craft.app Craft
SaaS / Web Services

Document and note-taking app. Apple Design Award winner.

craft + .app. The domain expresses the product's quality and craftsmanship.

poe.app Poe (Quora)
AI / ML

Chat platform providing access to multiple AI models.

An AI aggregator by Quora. poe + .app conveys a simple, app-like feel.

dashlane.app Dashlane
SaaS / Web Services

Password manager. Security-focused SaaS.

A security app choosing .app. The HTTPS-enforcing .app aligns with security-conscious branding.

notion.app Notion
SaaS / Web Services

Notion's mobile app distribution domain.

Holds .com, .so, and .app. A strategy of using different TLDs for different platforms.

View all specimens for this TLD →

Observed Habitats

SaaS / Web Services Startups Gaming / Entertainment

Prevalence

53

⚠ Caution

HTTPS mandatory.

Snapshot: 2025-12