# Postmath Co.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/postmath-co

- Industry: Education/Training
- Headquarters: Seoul, South Korea
- Website: www.postmath.info/
- Total disclosed funding: $6.1M
- Latest round: Series A (Nov 12, 2025)
- Investors on record: 5

## About

Founded in 2021, and based in Seoul, South Korea, Postmath Co., Ltd. operates as an educational platform that provides its users with mathematics training skills for high school and college students. In April 2026, Postmath Co., Ltd. raised approximately KRW 1.8 billion in venture funding from new investor East Gate Partners. As of April 2026, the company is led by its CEO Choi Jun-ho.  

Postmath Co., Ltd. offers Math Secretary, a platform designed to assist mathematics educators at every step of the teaching process with features such as organized question databases, content creation tools, source analysis capabilities, and video integration. From organizing mock tests to generating hit rate analyses, Math Secretary streamlines the entire process, allowing educators to focus on teaching rather than administrative tasks.

## Funding rounds

- Series A, Nov 12, 2025, $3.9M — Korea Credit Guarantee Fund, The Invention Lab, i-Scream Media
- Series A, Nov 22, 2024, $1.9M — Korea Credit Guarantee Fund, The Invention Lab
- Seed, Oct 4, 2023, $0.4M — The Invention Lab
- Seed, Jun 30, 2023 — ENSL Partners
- Seed, Jun 1, 2023 — Korea Tech Incubator for Startup, ENSL Partners

## Investors

- Korea Tech Incubator for Startup — Seed
- ENSL Partners (https://capitalatlas.ai/funds/ensl-partners) — Seed
- The Invention Lab (https://capitalatlas.ai/funds/the-invention-lab) — Seed, Series A
- Korea Credit Guarantee Fund — Series A
- i-Scream Media — Series A