Freedom251 › Writing Style Checkers
StyleGuard
What StyleGuard is
StyleGuard is a paid text-proofing system for spelling, style, word usage, and proper names. StyleGuard Pro watches edits as you type and suggests corrections. You can check writing against references such as The Associated Press, The Canadian Press, and the Financial Times, or use custom dictionaries. StyleGuard Manager supports custom entries and shared dictionaries and style rules for teams. The service works through web, macOS, Windows, browser extensions, and an API. Listed installers cover Safari, Chrome or Chromium, Firefox, Edge, Google Docs, Outlook, PowerPoint, and Word; editor support also includes Adobe InDesign. The API can connect the proofing engine to web CMS or editorial production systems. It is subscription- and cloud-based, so cloud text analysis needs an internet connection. Pricing is paid, with a free trial and plans from $49.99/yr. Lingofy AS identifies itself as the owner and is based in Oslo, Norway.
Who it suits
StyleGuard suits students, freelancers, institutions, corporations, and media organizations that need controlled spelling and style rules. It also fits teams sharing custom terminology across supported editors.
What it does well
- Live suggestions while typing
- Custom dictionaries and style guides
- Shared team rules and entries
- Browser, Office, and InDesign support
- API access for publishing systems
What to know first
- No free plan
- Cloud analysis requires internet
- Paid subscription model
- Browser support limited to recent versions
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Canadian Press Stylebook and Caps & Spelling | Starts at CAD 125.00 for one-year subscription for one user · Canadian English · usage and synonyms · StyleGuard Manager · maximum 250 custom entries | C$125 a year |
| Plain Language for Adobe InDesign | $ 349.00 / year · Plain Language guidance for Adobe InDesign | $349 a year |
| Financial Times Style Guide | $ 89.99 / year · Financial Times Style Guide · British English · StyleGuard Manager · 3 custom guides (250 custom entries) · macOS, Windows and Chromebook | $89.99 a year |
| Plain Language Style Guide | $ 89.99 / year · Plain Language Style Guide · 3 custom guides (250 custom entries) · browser plug-ins and Microsoft Word plug-in | $89.99 a year |
As styleguard.com lists them, read 30 Sept 2026. The maker's own page has the final word.
Verdict
StyleGuard combines live proofreading with reference guides, custom terminology, and team rule sharing. Its broad editor coverage and API suit organizations, while the paid cloud model and internet requirement matter for individual users.
Facts from StyleGuard's own pages
- API
- The company says its API can connect the proofing engine directly to web CMS or editorial production systems. · styleguard.com, 30 Sept 2026
- Cloud requirement
- StyleGuard Pro is subscription- and cloud-based and requires an internet connection to use its cloud text analysis engines. · styleguard.com, 30 Sept 2026
- Customization
- StyleGuard Manager lets users create custom entries and share dictionaries and style rules with other users. · styleguard.com, 30 Sept 2026
- Headquarters
- Oslo, Norway · styleguard.com, 28 Sept 2026
- Integrations
- Installers are listed for Safari, Chrome or Chromium browsers, Google Docs, Firefox, Edge, Outlook, PowerPoint and Word. · styleguard.com, 30 Sept 2026
- Intended users
- The company identifies students, freelancers, private institutions, corporations and media organizations among its customers. · styleguard.com, 30 Sept 2026
- Live suggestions
- StyleGuard tracks changes and suggests fixes as users type. · styleguard.com, 30 Sept 2026
- Maker
- The website identifies Lingofy AS as the owner of the StyleGuard trademark and lists its address in Oslo, Norway. · styleguard.com, 30 Sept 2026
- Office compatibility
- Cross-platform Office add-ins support Microsoft 365 or Office 2016 (16.0.11629) or newer, while Windows desktop add-ins support Office 2013 or newer. · styleguard.com, 30 Sept 2026
- Privacy
- The privacy policy says Lingofy AS processes personal data such as names, email addresses, services used and proofing-system choices. · styleguard.com, 30 Sept 2026
- Product
- StyleGuard Pro is a text proofing system that checks spelling, style, word usage and proper names. · styleguard.com, 30 Sept 2026
- Security
- The privacy policy describes regular risk assessments, technical systems and procedures intended to prevent unauthorized access to personal data. · styleguard.com, 30 Sept 2026
- Style references
- Users can proof against references such as The Associated Press, The Canadian Press and the Financial Times, or use custom dictionaries. · styleguard.com, 30 Sept 2026
- Support
- Users can contact the support team at [email protected]. · styleguard.com, 30 Sept 2026
- Supported browser versions
- StyleGuard Pro for Web supports Chrome, Safari, Firefox, Edge and Chromium-based browsers updated within the last three years. · styleguard.com, 30 Sept 2026
Where StyleGuard stands on Freedom251
- Writing Style Checkers#21 of 29