About this app
1Checker, the best free grammar checker, allows you to instantly check texts for various mistakes and offers you improvement suggestions for writing better English. Powered by Artificial Intelligence (AI) and Natural Language Processing (NLP) technologies, 1Checker is an ideal writing enhancement tool with spelling check, grammar check, style review, vocabulary enrichment, dictionary, translation and more this-is-exactly-what-I-want benefits all packed in one.
Latest release
What’s New
Compile with Facebook's upgrade to enable Facebook account log-in.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 10, 2026 · 3:20 AM Free
Screenshots
