What powers once.app?
Last seen Aug 2026 · 35 technologies across 15 categories
Analytics
Amplitude
since Apr 2020
Google Analytics
since Apr 2020
Hotjar
since Apr 2020
Naver Analytics
since Aug 2026
Segment
since Apr 2020
Vercel Analytics
since Feb 2026
Authentication
Apple Sign-in
since Feb 2026
CDN
Font scripts
Google Font API
since Aug 2022
JavaScript frameworks
Live chat
Intercom
since Apr 2020
Maps
Google Maps
since Jul 2020
Miscellaneous
PaaS
Amazon Web Services
since Apr 2020
Vercel
since Aug 2025
Performance
Priority Hints
since Feb 2026
Programming languages
Node.js
since Feb 2026
Security
Cloudflare Bot Management
since Nov 2025
HSTS
since Aug 2025
Static site generator
Nextra
since Jul 2026
UI frameworks
Headless UI
since Jul 2026
Radix UI
since Feb 2026
shadcn/ui
since Feb 2026
Tailwind CSS
since Feb 2026
Webmail
Google Workspace
since Aug 2022
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Aug 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 69% phone
- 31% desktop
United States
India
Indonesia
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.54 / 10 · ranked #2,423,826 of all domains
19 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.1 s |
| INP | 200 ms |
| CLS | 0.1 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Vercel
- Weight: 0.4 MB · 41 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Aug 2026.
Subdomains
| Host | Techs |
|---|---|
| beta.once.app | 17 |
| once.app | 17 |
| www.once.app | 16 |
| docs.once.app | 13 |
| editor.once.app | 9 |
| play.once.app | 7 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Bootstrap Icons Feb 2026
- detected jsDelivr Feb 2026