1. Give me your writing
A photo can only be previewed by this page — the browser cannot read handwriting by itself. Type the text into the box on the “I typed it” tab, or switch on AI deep check below, which can read a photo when you add your own API key.
🤖 AI deep check (optional — needs your own API key)
The built-in checker is a fixed rule list. For full correction, a better rewrite and photo reading, you can connect an OpenAI-compatible API. Your key is stored only in this browser (localStorage) and is sent straight to the provider you type below.
🎯 Proofreading practice
Five DSE-level proofreading questions, chosen from your own mistake categories. Tap the part of the sentence that is wrong — the answer and the reason appear straight away.
📚 My mistake log
Every writing error and every proofreading question you got wrong is stored here by grammar category, so you can see which type of mistake keeps coming back.
Filter by category
🗂️ Question bank
Every review question in this app, grouped by grammar category. The counter shows how many times you have tried it and how many times you got it wrong.