Grammar checkers, writing assistants, and AI tools have quietly become the biggest category of software that processes our private text. Yet most users never consider where their words actually go when they press a keyboard shortcut or click "Check Grammar."
The Privacy Risks of Cloud Writing Tools
When you use a cloud-based grammar checker or writing assistant, several things happen that most users don't think about:
⚠️ Your text is transmitted to external servers
Every word you submit passes through the provider's infrastructure. This includes confidential emails, legal documents, business strategy, personal correspondence, and anything else you're writing.
⚠️ Potential use for AI training
Many AI services reserve the right to use user inputs to improve their models. Opt-out mechanisms exist but are often buried in settings or limited to paid plans.
⚠️ Data breach exposure
Cloud writing data is stored (even temporarily) on servers that can be compromised. Major SaaS companies have suffered significant data breaches — writing tools are not immune.
⚠️ Regulatory compliance risk
For industries subject to HIPAA, GDPR, SOC 2, or attorney-client privilege, using cloud writing tools for sensitive content may create compliance violations.
Privacy Comparison: Major Writing Tools
Grambo (Offline Mode)
Text processed entirely on your Mac. No network requests. Architecturally impossible to transmit text externally in offline mode.
LanguageTool (Self-Hosted)
Can be fully private if you run the Java server locally. Requires technical setup. Default cloud version sends text to their servers.
Grammarly
All text processed on cloud servers. AI training opt-out available but not default. Strong privacy policy, but cloud-based by design.
DeepL Write
Web-based, all text sent to DeepL servers. Privacy policy states text is not stored after processing, but it's still transmitted.
What Makes a Writing Tool Truly Private?
There's a difference between a tool that's policy-private and one that's architecturally private:
- Policy-private — The company promises not to store or misuse your data. This relies on trust and legal obligations, but the data still leaves your device.
- Architecturally private — The tool doesn't have the technical ability to transmit your text because it runs locally. No promise needed — it's physically impossible for the data to leave your device.
Grambo's offline mode is architecturally private. The full technical explanation is on our privacy writing tool page, but in short: in offline mode, there's no network call in the grammar processing path. Not one.
Practical Privacy Tips for Writers
- Use offline tools for sensitive content — Legal filings, medical notes, confidential business documents, NDA-covered work: use a local tool.
- Read the privacy policy's data section specifically — Look for language about how long inputs are retained and whether they're used for training.
- Consider Bring Your Own Key (BYOK) — If you use Grambo's BYOK mode, your text goes directly from your Mac to your chosen AI provider (OpenAI, Anthropic, Google) — it never passes through Grambo's servers.
- Segment your writing tools by sensitivity — Use cloud tools for non-sensitive public content, and local tools for anything confidential.
For a deeper look at Grambo's privacy architecture and how different modes handle your data, see our privacy writing tool guide and our full Privacy Policy.
Write Privately with Grambo
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