Happo
Free plan · From $149/moActively maintained
- Is it safe? Run by Happo LLC.See ↓
- Is it free? Free plan · From $149/mo · pricing page, read Nov 3, 2026See ↓
- What else does this?
Gologinfree
ZeroDesk
Snapshot SitefreeSee ↓
not read yet
Use
- For
- Frontend teams reviewing UI changes in pull requests across browsers and native apps.
- Price
- Free plan · From $149/mopricing page, read Nov 3, 2026
- Activity
- Actively maintainedrelease yesterday · site updated 2 weeks ago
- Company
- Happo LLC · since 2014privacy policy · per their About page
- App Store
- 00 ratingsiPhone & iPad · updated Jul 19, 2026
- Used for
- Catch unintended visual changes in pull requests before merge
- Compare UI diffs across Chrome, Firefox, Safari and iOS
- Flag accessibility contrast violations during pull request review
- On the web since 2014, older than 95% of its shelfINITE Atlas
- Has an MCP server (1 in the registry)public registry →
- Founded2014per their About page ↗
- Run byHappo LLCprivacy policy ↗
- Privacy policy updated2026-06-02privacy policy ↗
- Security contactsecurity.txt
These are Happo's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.
- MCP serverio.happo/mcpverified in the MCP registry
- Stateanswers, requires sign-inchecked 2026-11-03
- Address to connecthappo.io/api/mcp
- MCP docshappo.io/mcpthe vendor's page ↗
- Status pageall systems operationalhappo.statuspage.io ↗
This card as JSON, for your agent →
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
Figure and bar: visits/mo, estimate · year: online since
- #1
Gologin
Runs each online account in its own isolated browser profile with separate cookies, fingerprint and proxy location.
75.4kActiveFrom $4.50/mo2019 - #2
ZeroDesk
Workspace with AI assistant for document creation, data analytics, and team collaboration.
17Active - #3
Snapshot SiteMCP · sign-in
Captures full-page screenshots with a real browser, compares two page states as a diff image, and runs quality analysis on web pages via API.
5ActiveFrom ≈ $7.83/mo - #4
BlueNexus AIMCP · sign-in
Shared workspace where a team and agents edit one document, pull in connected tools, and run workflows that wait for human approval.
27ActiveFree plan2025 - #5
Put RootsMCP · open
Plans a 60-day relocation checklist on a map, pins each task to a place, and drafts letters and bookings for your approval.
5From $9/mo
Not it? Say what you need
betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use Happo for?
Sign in to leave a noteWhat is Happo?
Compares screenshots of UI across browsers and devices on each pull request to flag visual, layout and contrast changes. It is listed in the Atlas under Productivity and made by Happo LLC.
Who is Happo for?
Frontend teams reviewing UI changes in pull requests across browsers and native apps.
How much does Happo cost?
Happo has a free plan; paid plans start at $149/mo, per its pricing page on 2026-11-03.
Is Happo free?
Yes, Happo has a free plan, per its pricing page on 2026-11-03.
Is Happo still maintained?
Actively maintained: release yesterday · site updated 2 weeks ago.
Who owns Happo?
Happo is run by Happo LLC, per its privacy policy (2026-11-03).
Does Happo have an iPhone app?
Yes: “HAPPO” on the App Store, rated 0 from 0 ratings; current version released 2026-07-19.
What are alternatives to Happo?
In Productivity, by use: Gologin, ZeroDesk, Snapshot Site, BlueNexus AI, Put Roots.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
Before we count this visit
Analytics and ad measurement tell us which pages and which of our ads do their job: Google Analytics and Google Ads, the Meta pixel, Yandex Metrica, and one first-party id of our own. Nothing is stored until you answer, and declining changes nothing about the site.