Quo in a few pages, for writers, partners and anyone curious: the facts, the people, the money, the products and the news. Put together by ToolGPA, not by Quo.
Quo, called OpenPhone until September 2025, is made by OpenPhone Technologies, Inc., a venture-backed company that went through Y Combinator. It earns money from subscriptions to its business phone app, sold per user on monthly or annual plans.
Founded
2018
Based in
San Francisco
Chief executive
Mahyar Raissi
Latest round
Growth financing, $96 million
Ownership
Privately held
Unofficial. Put together by ToolGPA from Quo’s own pages, news reports and our own grades, read Oct 18, 2026. Not made, paid for or approved by Quo. toolgpa.com
Part 01 · Company
The company
Who they are, the facts in one place, and the people who run it
2018
The year Quo was founded, in San Francisco
In a sentence
Quo, called OpenPhone until September 2025, is made by OpenPhone Technologies, Inc., a venture-backed company that went through Y Combinator. It earns money from subscriptions to its business phone app, sold per user on monthly or annual plans.
In a paragraph
Quo was founded in 2018 and is based in San Francisco, California. Mahyar Raissi is its CEO & Co-Founder; Daryna Kulya is a co-founder.
Free to quote. Please link to toolgpa.com so readers can check the facts.
Fact sheet
Company
Quo
Founded
2018
Based in
San Francisco, California
Website
quo.com
Products we list
Quo
Ownership: Privately held
Privately held and run by its co-founders. Its About page names its investors, and its press release of September 2025 describes outside financing from General Catalyst's Customer Value Fund and existing investors. No parent company is named.
20% commission on the annual revenue of each qualified referral, tracked through PartnerStack. A referral qualifies when it signs up through the partner's link, is new to Quo and converts to a paid plan.
Referral program
A customer who refers someone gets a $50 gift card and the new customer a $20 one, once the referred account has paid for 3 months. Up to $250 a month in gift cards.
Part 02 · Funding
The money
Every announced round, who put money in, and what it was last valued at
A $2 million seed in January 2020, a $14 million Series A in November 2020 and a $40 million Series B in April 2022, after which TechCrunch put the total at $56 million. In September 2025 it announced $105 million more: $96 million of growth financing from General Catalyst's Customer Value Fund and $9 million of equity from existing investors.
Announced rounds, oldest first. Bar heights are to scale.
Every announced round
Sep 23, 2025Growth financing$96 millionLed by General Catalyst's Customer Value Fund. prnewswire.com
Apr 7, 2022Series B$40 millionLed by Tiger Global. With Craft Ventures, Slow Ventures, Garage Capital, Worklife Ventures. techcrunch.com
Nov 17, 2020Series A$14 millionLed by Craft Ventures. With Slow Ventures, Kindred Ventures, Y Combinator, Garage Capital, Chapter One Ventures. techcrunch.com
Jan 29, 2020Seed$2 millionLed by Slow Ventures. With Y Combinator, Kindred Ventures, Garage Capital, 122WEST Ventures. techcrunch.com
Investors named
Slow Ventures
Craft Ventures
General Catalyst's Customer Value Fund
Tiger Global
Garage Capital
Kindred Ventures
Y Combinator
122WEST Ventures
Chapter One Ventures
Worklife Ventures
Filled: led at least one round. As each announcement names them.
What they make
Quo, as ToolGPA grades it: five subjects, a letter for each, and a GPA.
Quo
Business phone app for calls and texts on shared team numbers
#3 of 20 business phone systemsFrom $15 per user / month, billed annually4.4 on the App Store
2.8GPA
Our pick for small teams that share a number and text customers a lot. Quo, which used to be OpenPhone, gives you a business number for calls and texts that the whole team can share, with one history everyone sees.
CValue
CFree
BFeatures
BEase
APlatforms
Quo’s grade as a badge for its own site, free: it updates itself and links to the review. Code at toolgpa.com/badges.
Part 04 · News
News and contacts
What they have announced lately, and every official channel
This media kit is ToolGPA’s own summary of what Quo’s pages, news reports, investors’ announcements and public filings said on the dates shown, with our own grades. It is not made, paid for or approved by Quo, and Quo’s names and logos are trademarks of their owner. Grades are our judgement under the rules at toolgpa.com/grades. ToolGPA uses affiliate links and may earn a commission from them, and it works with sponsors; no one can pay for a grade. Product pictures are Quo’s own, from its website and app-store listings.
