Lex

Web · iPhone · API

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Freedom report

One barScore 6.3

Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

Lex is ranked #105 of 269 in AI writing tools on Freedom251. It runs on API, iOS, Web. A free trial is offered.

Lex plans and pricing

All plans

Lex Pro Monthly version mentioned; price not displayed on the opened pricing page. Access to premium AI models · early access to features and the iOS app · priority email support lex.page · 5 Oct 2026

Compared on AI writing tools

Free plan: Yes
Brand voice controls: Yes
Browser extension: No
Desktop app: No
Mobile app: Yes

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The record

Product: Lex describes itself as collaborative documents with AI editing tools.
AI writing tools: Lex offers AI feedback for drafts, brainstorming and rewrites, plus commands and one-click title ideas.
Collaboration: Users can share documents for live collaboration, comments and read-only publishing; collaborators can join from a link without downloading an app.
Free account limits: Free users are limited to 30 Ask Lex messages per day, five saved prompt runs per month and a low daily AI processing budget.
Customization: Lex supports custom reusable prompts and shared context tags that give its AI background about a team's voice, goals and past work.
Integration: The Kit integration analyzes recent and high-performing newsletters to create custom prompts for drafting in the user's voice and suggesting subject lines, and can send finished writing to Kit.
API: Lex says it offers a simple developer API and links to its documentation.
AI privacy: Lex says it does not train AI models on customer content without explicit written permission and uses OpenAI, Anthropic and Together.ai vendors with policies against training on customer data.
Security: Lex says it encrypts web requests with TLS, restricts and logs database access, requires two-factor authentication for infrastructure access, and backs up its database continuously.
Support and refunds: Lex offers Pro members priority support by email and says customers who do not love Lex after a month can contact it for a refund.
Intended users: Lex says it is for writing that needs editing and revision, including academic papers, customer-facing copy, important emails and fiction.
Mobile access: Lex describes mobile web collaboration and says Pro includes access to its iOS app.

Where it ranks on Freedom251

Best AI Writing Tools in 2026#105 of 269
Best AI Writing Assistants in 2026#22 of 26

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Sources

lex.page· checked 5 Oct 2026
lex.page/read/a6392989-b65b-421d-ae53-1a48be8bea· checked 5 Oct 2026
lex.page/read/b48ff4f2-cc08-45f4-ab19-9b5e9cffc5· checked 5 Oct 2026
lex.page/read/f98a818a-c2af-4730-ad9f-ab76151a51· checked 5 Oct 2026
lex.page/about· checked 5 Oct 2026
lex.page/read/804b52ec-ba1d-4e05-9e81-0a568faa0a· checked 5 Oct 2026
lex.page/pricing· checked 5 Oct 2026