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Hellosaurus

AcquiredYC S20

San Francisco, US · Founded 2020 · 25 employees · 8 known investors

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Hellosaurus provides software and a distribution platform that enables children's content creators to produce interactive video shows where kids participate actively rather than passively watch. The platform connects creators with families and is designed to support cognitive and social development through play-based engagement.

Also known as All Together Labs, Inc.

ConsumerMedia & EntertainmentEducationEntertainmentKidsUnited States of AmericaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (S20)

Hellosaurus was founded in 2020 by James Ruben.

JRJames Ruben
James RubenFounder, CEO (acquired by Brilliant.org; YC S20)2019–2024James Ruben directed product development at HQ Trivia and previously worked as a Product Manager at Google. He holds a degree from Harvard and founded Hellosaurus, an interactive media platform for children.
JS
Jared SilverFounding Full Stack Engineer
JV
John VerticchioFounding Unity Engineer
ZD
Zack DavenportFounding Designer

Investors · 8

BDMIreportedNew York · $500K – $5M

How we know: globenewswire.com · Not right? Tell us

General CatalystreportedSan Francisco · $30M

How we know: funding news · globenewswire.com · Y Combinator's founder network · Not right? Tell us

GSV VenturesreportedSan Francisco · $250K – $15M

How we know: globenewswire.com · Y Combinator's founder network · Not right? Tell us

Shrug CapitalreportedSunnyvale · $100K – $3M

How we know: globenewswire.com · Y Combinator's founder network · Not right? Tell us

Also in the syndicate · 3

GFCNext 10 VenturesRunway Fund

Funding

SEC filings, press & company announcements

$3.5M disclosed across 1 round · 2020

Source: company announcements and press reports — follow each round's link for the claim.

Related companies · 5

TappityA platform offering interactive science lessons designed for children, featuring content from various instructors.
ClassDojoClassDojo is a global community platform connecting over 50 million teachers and families to share learning moments through photos, videos, and messages. The platform serves schools and families worldwide, providing a safe online space for children to learn through play and discovery.
LitnerdLitnerd is a reading and writing application for children that combines collaborative clubs, gamified challenges, and AI-powered personalized tutoring to help kids develop literacy skills. The platform enables children to create original stories, which the app illustrates and publishes, while integrating curriculum-aligned content and learning tools designed around reading science principles.
StayQriousStayQrious operates a school that moves away from traditional factory-model education toward experiential, project-based learning for children. The institution focuses on developing problem-solving skills and a love of learning rather than rote syllabus completion.
AlltruistsAlltruists delivers bimonthly subscription boxes containing educational materials, activities, and volunteer projects designed for children to learn about and engage with social issues like homelessness, hunger, and climate change.

Companies working in the same space as Hellosaurus.

Legal entities · 1

corporate structure
All Together Labs, Inc.

Frequently asked questions

What does Hellosaurus do?
Hellosaurus provides software and a distribution platform that enables children's content creators to produce interactive video shows where kids participate actively rather than passively watch. The platform connects creators with families and is designed to support cognitive and social development through play-based engagement.
Who founded Hellosaurus?
Hellosaurus was founded by James Ruben in 2020.
Who are Hellosaurus's investors?
Hellosaurus's investors include Y Combinator, BDMI, General Catalyst, GSV Ventures, Shrug Capital.
How much funding has Hellosaurus raised?
Hellosaurus has disclosed $3.5M raised across 1 round.
Where is Hellosaurus headquartered?
Hellosaurus is headquartered in San Francisco, US.