Sahihly vs Undetectable.ai
Undetectable.ai is a well-known English humanizer. Sahihly matches it on English while adding genuine Arabic support and a free, no-signup tier.
FeatureSahihlyUndetectable.ai
Native Arabic detection & humanizing
Native English quality
Free tier, no signup
Sentence-level highlights
Auto verify-after-rewrite loop
Honest confidence rating on every score
Style report (rhythm, vocabulary, AI-tells)
Arabic-aware rewrite styles
Responsible-use positioning
If you write in Arabic — or in both languages — Sahihly is the more complete choice.
Try Sahihly free