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Doomersion
YC W26San Francisco, US · Founded 2025 · 4 employees · 1 known investors
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Doomersion provides language learning through short-form videos matched to the learner's proficiency level. The platform gamifies language acquisition by integrating educational content into the social media consumption experience.
Also known as Doomlingo
Founders & leadership· Y Combinator alumni (W26)
Doomersion was founded in 2025 by Mostafa Afr.
MA
Mostafa AfrFounderMostafa Afr is a Penn M&T student and former professional gamer with expertise in language learning, particularly Japanese.
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· Winter 2026 batch
Alumni Q&A
- How did your company get started? (i.e., How did the founders meet? How did you come up with the idea? How did you decide to be a founder?)
- The idea grew out of Mostafa's 6 years of self-teaching Japanese via YouTube and his involvement in online language communities, where a post of his ranked among the most liked on r/LearnJapanese over a two-year span. He observed that existing apps like Duolingo were engaging but seen as ineffective, while immersion in native content was more effective but dull for beginners. After a year building an app that let users practice by talking to fictional characters in other languages, he found people didn't want to chat with AI daily, so he combined immersion with short-form scrolling.
Summarized from the founders' answers on their Y Combinator profile.
In the news
Frequently asked questions
- What does Doomersion do?
- Doomersion provides language learning through short-form videos matched to the learner's proficiency level. The platform gamifies language acquisition by integrating educational content into the social media consumption experience.
- Who founded Doomersion?
- Doomersion was founded by Mostafa Afr in 2025.
- Who are Doomersion's investors?
- Doomersion's investors include Y Combinator.
- Where is Doomersion headquartered?
- Doomersion is headquartered in San Francisco, US.