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Units
YC X25San Francisco, US · Founded 2025 · 1 employees · 1 known investors
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Units provides an alternative education model aimed at reimagining how students learn, positioning itself in opposition to traditional schooling structures. The company focuses on accelerating student learning and potential outside conventional educational systems.
Also known as GradeAssist, Inc. · GradeAssist · GradeAssist, VibeGrade, TypeOS · TypeOS · VibeGrade
Founders & leadership· Y Combinator alumni (X25)
Units was founded in 2025 by Daniel Martinez.
DM
Daniel MartinezCEODaniel Martinez participated in Y Combinator and has been building products since childhood. He founded Units, an educational platform.
MA
Musa AqeelCTO2024–2026
MT
Max TaCMOformer
Investors · 1
Y Combinatorlisted by Y CombinatorSan Francisco · $500K
How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us
The YC application· Spring 2025 batch
Alumni Q&A
- What is your long-term vision? If you truly succeed, what will be different about the world?
- The founders aim to improve education for both students and teachers, going beyond expanding students' access to information to supporting teachers in guiding them.
Summarized from the founders' answers on their Y Combinator profile.
Related companies · 7
StuddyStuddy is an AI-powered tutoring platform that provides personalized 1:1 lessons via an interactive whiteboard for students learning academic subjects. The service covers a wide range of topics including math, chemistry, physics, and organic chemistry, and helps students improve understanding and academic performance.
DropcamWi-Fi camera with easy setup and continuous cloud recording; acquired by Google in 2014.
WonderingWondering is a mobile learning app that breaks down topics such as machine learning, quantum mechanics, and product design into short lessons combining visuals, podcasts, and interactive exercises. Its learning paths are tailored to each user's background, learning style, and desired depth.
ISSENISSEN is a real-time voice AI tutor for language learning that engages users in conversational practice across 50+ languages, available 24/7 on desktop and mobile. The app personalizes lessons based on learner goals, style, and proficiency level, offering features like flashcards, grammar lessons, and translation drills.
FluentlyFluently is an AI-powered language learning platform that enables real-time conversation practice, pronunciation training, and interactive feedback for English learners. The service targets both individual learners and teams seeking to improve English speaking skills in a judgment-free environment.
MySiviMySivi is an app that combines AI tutoring and human instruction to help users practice English conversation and improve their speaking ability.
Teachers Pay TeachersTeachers Pay Teachers is a marketplace where educators share and sell teaching resources and lesson plans. The platform serves teachers and educational institutions seeking classroom materials.
Companies working in the same space as Units.
Legal entities · 1
corporate structureGradeAssist, Inc.
In the news
Frequently asked questions
- What does Units do?
- Units provides an alternative education model aimed at reimagining how students learn, positioning itself in opposition to traditional schooling structures. The company focuses on accelerating student learning and potential outside conventional educational systems.
- Who founded Units?
- Units was founded by Daniel Martinez in 2025.
- Who are Units's investors?
- Units's investors include Y Combinator.
- Where is Units headquartered?
- Units is headquartered in San Francisco, US.