Prepace
USA
PrepAce supports SHSAT, SSAT, ISEE, HSPT, TACHS with full-length tests, adaptive practice, mistake-based learning, analytics, AI recommendations, individual/family subscriptions, and seat-based institutional licensing. Engineered for high concurrency and future exam expansion.
Timeline 3 Months
Services
Prototype Design
Market Research
Frontend Development
Backend Development
QA Testing
Platform Deployment
Did You Know?
Students using adaptive practice and mistake-based learning systems show 35–45% faster score improvement compared to static test-prep methods.
Did You Know?
Students using adaptive practice and mistake-based learning systems show 35–45% faster score improvement compared to static test-prep methods.
React.js
Typescript
Supabase
OpenAI
Stripe
Next.js
Problem Statement
PrepAce faced complexity on multiple fronts. Subscription logic had to support Individuals, Families, and Organizations, each with different entitlements. AI workflows caused 504 timeouts in production. Real-time test sessions required second-by-second state sync without data loss. Shared authentication across portals caused role collisions, especially with Google OAuth.
Solutions
We implemented a role-mapped subscription architecture using Stripe lifecycle events. AI workloads were offloaded to a dedicated EC2 instance. Redux Toolkit with persistence handled real-time exam state locally, syncing incrementally with the backend. Backend middleware enforced strict role validation, ensuring users only accessed their intended portals—even with shared cookies.
Technical Architecture
An AI-driven test prep platform that accelerates student performance through adaptive practice and mistake-based learning. React/Next.js/TypeScript frontend connects to Supabase backend with OpenAI AI integration. Redux Toolkit with persistence handles real-time exam state locally, syncing incrementally to prevent data loss. Stripe manages subscriptions for Individual/Family/Organization portals, with dedicated EC2 instance for AI workloads and strict role-based backend middleware preventing portal access collisions.
Tech Stack
React.js
Typescript
Supabase
OpenAI
Stripe
Next.js
The process
The process
Having the design, within a few months our development team built the product that was ready for the client's review. Since then worked on retainer basis for maintenance, QA & testing.
KPIs
43%
Score Improvement Rate
PrepAce accelerated student performance improvement by 43% through adaptive practice, mistake-based learning, and AI-driven test recommendations across competitive exams.
KPIs
PrepAce accelerated student performance improvement by 43% through adaptive practice, mistake-based learning, and AI-driven test recommendations across competitive exams.
43%
Score Improvement Rate
62%
of traffic are active users
62%
of traffic are active users
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