Prices in GBP. Verified monthly. Always check the provider's site for the latest.
Pros & cons
Grammarly
Pros
+SOC 2 Type II and ISO 27001 certified — strongest compliance in the writing category
+Works across browser, desktop, Word, Google Docs, and email with one install
+Pro tier confirmed at £10/mo in GBP — transparent UK pricing
+Explicit opt-out from AI model training available in account settings
Cons
−Trains on user writing by default — opt-out required
−GDPR compliance not explicitly confirmed on accessed official pages
−Free AI prompt limit (100/mo) may feel restrictive for daily users
Replit
Pros
+GDPR compliant with EU representative appointed (confirmed from privacy policy)
+Build, run, and host in a single browser-based environment
+Free Starter tier with daily AI agent credits — no card required
+Enterprise plan includes single-tenant environments and SSO
Cons
−SOC2 not confirmed from official sources
−Core and Pro tiers priced in credits — actual usage cost unpredictable
−Less capable than desktop IDEs for large, complex codebases
Our take— Grammarly wins
Based on our comparison of published pricing, features, and compliance data, Grammarly pulls ahead with SOC 2 certification and ISO 27001 certification. Replit counters with GDPR compliance. Grammarly scores 8.1/10 to Replit's 7.8/10. Pick Grammarly if SOC 2 certification matters; pick Replit if GDPR compliance matters.