Frequently Asked Questions

Find answers to the most common questions about our grammar engine and privacy practices.

Is GrammarPro really free? ▼

Yes, GrammarPro is 100% free to use with no hidden fees or subscriptions.

Do you store my text? ▼

Absolutely not. All analysis is done locally in your browser. If you turn off your Wi-Fi after loading the page, the tool still works perfectly.

Does it use generative AI? ▼

No. To guarantee absolute privacy and zero latency, we use a custom deterministic rule-based engine, not an external LLM API.

Can I use it on mobile? ▼

Yes! The site is fully responsive and works beautifully on smartphones and tablets.

What types of mistakes does it catch? ▼

It detects common spelling typos, double spaces, repeated words, capitalization errors, wordy phrases, and basic passive voice constructions.

How is the Reading Score calculated? ▼

We use an algorithm based on the average words per sentence to estimate the required reading level (e.g., 8th Grade, High School, College).