Content Checker vs Revise

Content Checker helps writers apply Government Digital Service style guidance and content design rules to text. It checks for words to avoid, capitalisation, spelling, formatting, and inclusive language against over 140 rules. A searchable GOV.UK A-to-Z style guide is included, and a setting can add HMRC-specific rules and entries. The website can suggest URL slugs from page titles using GOV.UK URL standards and show changes made by each rule. The free app works offline and is available on Android, iOS, and macOS; the web version is also available. Editor support is listed for web, iOS, and macOS. The maker says app checks happen on the device without sending content to a server. Website submissions are sent for processing and immediately discarded; the maker says they are not stored, logged, or saved. Content Checker is independent and is not affiliated with or endorsed by GDS, GOV.UK, or HM Government.

Revise is a browser-based AI document editor and word processor, offered through web, API, and self-hosted options. Its AI agent can brainstorm, draft, edit, rewrite, and search the web for citations, presenting proposed changes for review. AI edits appear as tracked changes that users can accept or reject individually. The editor supports DOCX, PDF, Markdown, and text files, with export to DOCX, PDF, and Markdown. Revise supports models from OpenAI, Anthropic, Google, and xAI, plus real-time collaboration and focused document comment threads. ChatGPT and Claude plugins use the customer’s subscriptions, while an SDK connects external agents through MCP. Documents and AI conversations are described as private by default, encrypted in transit and at rest, and deletable by the user. The Free plan costs $0 per month and includes a daily AI limit. Plus costs $8 per month, Pro $20 per month, and Max $80 per month. The API is billed per request, with 18 MiB uploads and PDFs up to 100 pages.