Riiid vs Schoolhouse.world
South Korean AI edtech whose Santa app gives adaptive, AI-tutor TOEIC/TOEFL prep (rebranded Socra AI). Free peer-led SAT prep and tutoring. Below we put Riiid and Schoolhouse.world side by side — model, fees, subjects, pricing, founding year and the countries they serve — to help you choose the right online tutoring platform.
| Attribute | Riiid riiid.com | Schoolhouse.world schoolhouse.world |
|---|---|---|
| Type | Test Prep Tutoring | Test Prep Tutoring |
| Model | Subscription | Nonprofit peer tutoring |
| Founded | 2014 | 2020 |
| Headquarters | Seoul, South Korea | Mountain View, USA |
| Regions served | Korea, Japan, Taiwan; partnerships into US, LatAm, Middle East | Global |
| Subjects | TOEIC/TOEFL English test prep (AI-driven) | SAT prep, math, homework help |
| Pricing | Santa app ~$16.49/mo or ~$103.99/yr; premium passes $149.99-$239.99 | Free |
| Scale | ~$250M raised (incl. $175M SoftBank); Santa 5M+ downloads; rebranded Socra AI (2025) | Founded by Sal Khan; partnered with College Board |
| Status | Active | Active |