
Corrector App is a free online grammar checker and AI content detection tool designed to help users correct grammar, spelling and punctuation errors, and to identify text that may have been generated by AI.
Yes. According to available information, Corrector App is free to use — its core grammar checking and AI content detection features are available without payment.
It supports over 25 languages, including English (US/UK variants), Chinese, French, German, Spanish, and it also explicitly supports Tagalog.
The AI content detection feature helps analyze how likely parts of a text were generated by large language models such as ChatGPT or GPT-4, assisting users in assessing originality and authenticity.
No. Corrector App is designed for use without registration or login — simply open the website in your browser and paste your text to check.
Per check, grammar checking supports up to 15,000 characters, while AI content detection supports up to 800 words.
Yes. Corrector App is a web-based tool that works on both desktop and mobile browsers with a responsive interface adapted for mobile use.
Corrector App focuses on free online grammar checking and AI content detection with multilingual support. Grammarly is a broader writing assistant offering advanced style and tone suggestions, and some of its features require a paid subscription. The two differ in feature scope and business model.
Grammarly is an AI-powered intelligent English writing assistant that helps users improve the accuracy and professionalism of written communication through real-time grammar checking, style optimization, and content generation.

AI Detector Pro is a professional platform that combines AI content detection with text humanization features, designed to identify AI-generated text and code and provide optimization suggestions.