Detailed analysis
Estimated scores and specific feedback across grammar, vocabulary, structure, and coherence.
AI learning / Portfolio project / 03
Write with
more clarity.
An AI-powered writing assistant that helps IELTS and TOEFL students turn every essay into clear, practical next steps.
Download on the App StoreAI feedback for real progress
The idea
Feedback you can
actually use.
Essay Coach AI turns a blank page into a better next draft. Students submit an essay, receive an estimated score and detailed evaluation, then keep improving with a context-aware AI chat assistant.
Exam-ready
Focused support for the expectations of IELTS and TOEFL writing tasks.
A study partner
Context-aware AI chat and personalized recommendations for the next draft.
How it is built
Native iOS,
thoughtful systems.
Essay Coach pairs a responsive SwiftUI experience with secure cloud services, so feedback, essay history, and usage stay reliable across sessions.
01Swift & SwiftUI
Native iOS interface and responsive app experience.
02OpenAI API
Essay analysis, score estimates, feedback, and conversational help.
03Firebase
Authentication, Cloud Firestore, and secure Cloud Functions.
04RevenueCat & StoreKit
Subscriptions, entitlements, and verified purchase events.
Subscription architecture
Usage that stays
fair and reliable.
Weekly and monthly auto-renewable plans fund a coin-based usage system. Verified renewals add coins securely while idempotent transaction handling prevents duplicate rewards.
App Store
& StoreKitRevenueCatVerified
webhookFirebase Cloud
FunctionsFirestore coin
balance
& StoreKitRevenueCatVerified
webhookFirebase Cloud
FunctionsFirestore coin
balance
Inside the app
Turn feedback into
your next draft.
