PromptDC
PromptDC is an AI prompt and writing assistant that works inside any text field on the web, in IDEs and on macOS. Its Writing and Coding modes rewrite emails, posts and developer prompts for everyday users and engineers alike.
What is PromptDC?
PromptDC is an AI prompt and writing assistant that acts on any text you select on the web, from blogs and articles to emails, social posts, Google Docs and the prompts you type into AI chatbots. Instead of switching to a separate app, you get a floating toolbar next to the selected text, a right-click Enhance with PromptDC entry and a keyboard shortcut (Ctrl+Shift+Space, Cmd+Shift+Space on macOS). In an editable field the rewrite is applied in place; on a read-only page the result is copied to the clipboard instead. Nothing replaces your text until you accept the preview.
The tool runs in two modes. Writing covers grammar, emails, social posts, replies, summaries and explanations. Coding turns a loose development request into an implementable specification. Ten built-in profiles sit underneath - Code, Grammar, Email, Social, Image Prompt, Summarize, Reply, Professional, Concise and Explain - and you can create your own and pin them to specific domains, so Grammar applies on Gmail while Social applies on LinkedIn. Platform detection recognises ChatGPT, Claude, Gemini, Grok, Cursor, Lovable and Bolt among others and adapts the rewrite accordingly. Prompts can be produced as Regular text, JSON, XML or YAML, and the IDE extensions let you choose the target model or editor.
PromptDC ships as a Chrome extension, as IDE extensions for VS Code, Cursor, Windsurf, Kiro, Trae and Antigravity, as a macOS desktop app with global shortcuts, and as a web app. The backend is a Supabase edge function and OpenAI is the default provider. On the Lifetime plan the tool switches to bring-your-own-key: you supply an OpenAI, Anthropic, Google or xAI key and pay that provider directly for what you consume.
Nothing here is free - there is no free plan and no free trial, so a paid plan is required from the first enhancement. The publisher is Panagiotis Visilias, an engineer who had been building applications on AI models since late 2021 and started the project in 2024, when the proliferation of tools such as Cursor, Lovable and Bolt, each with its own prompting expectations, made a single translation layer look worth building. The operation presents itself as small and responsive; the home page counted 4,172 people having improved their prompts on 17 August 2026.
What it does
- Fix the grammar, tone and clarity of selected text on any website
- Rewrite emails, replies and social posts directly inside the input field
- Turn a vague development request into an implementable specification
- Apply a rewriting profile automatically, site by site, through per-site rules
- Summarise articles and documents with the Summarize profile
- Generate image prompts with the Image Prompt profile
- Output the finished prompt as Regular text, JSON, XML or YAML
When to use PromptDC / When not to
A quick filter to help you decide if PromptDC is the right fit.
When to use PromptDC
- Developers working in Cursor, VS Code, Windsurf, Kiro, Trae or Antigravity who want a vague request turned into an implementable specification
- Daily users of ChatGPT, Claude, Gemini and Grok who want to tighten a prompt before sending it
- Anyone writing at volume in the browser: Gmail emails, LinkedIn and X posts, replies and summaries
- Teams looking for repeatable, consistent output, using shared rewriting profiles applied automatically site by site
- Buyers who refuse recurring subscriptions and prefer the one-off Lifetime licence with their own provider key
When not to use PromptDC
- Anyone who wants to test before paying: there is no free plan, no free trial and no free credits
- Teams handling confidential or regulated content, since the selected text is sent to third-party LLM providers, OpenAI by default, on every enhancement
- Buyers with strict procurement requirements: no DPA is published, no hosting country is stated and no SOC 2 or ISO certification is mentioned
- Mobile users, and Windows or Linux users wanting a native desktop app: there is no iOS or Android app and the desktop build covers macOS only, in arm64 and Intel versions
- Developers who need a public API to automate rewriting, as none is offered and no product API documentation exists
How to use PromptDC
A typical end-to-end flow, from setup to results.
- Install the Chrome extension from the Chrome Web Store, or the IDE extension from the VS Code Marketplace or Open VSX, or the macOS desktop app
- Pin the extension and sign in to your account, which is what unlocks enhancement
- Place your cursor in any text field on the web: the floating toolbar appears next to it
- Click Enhance, use the right-click 'Enhance with PromptDC' entry, or press the keyboard shortcut
- Read the preview, then click Accept - nothing replaces your text before that
- Pick Writing or Coding mode, or let per-site detection decide for you
- Assign a rewriting profile to a site so the same treatment applies automatically next time
- In an IDE, select the target model or editor and enhance in one to four clicks depending on the tool: one in VS Code, Cline, GitHub Copilot, Codex and Gemini CLI, two in Cursor, Kiro and Trae, three in Antigravity, four in Windsurf
- On the Lifetime plan, create an API key with OpenAI, Anthropic, Google or xAI, paste it into PromptDC and choose your provider and model
- Disable PromptDC on any site you would rather keep untouched; the choice is remembered
Pros & Cons
Pros
- Works in any text field without switching application, and covers everyday writing as well as code prompts in a single tool
- Per-site profiles apply the right treatment automatically, and every rewrite is previewed before it replaces your text
- A one-off Lifetime purchase avoids a recurring subscription, with provider usage announced at roughly $1-3 per month under BYOK
- Provider API keys are never persisted on the publisher's servers, only in the browser and the extension
- Subprocessors are published by name: Supabase, Stripe, OpenAI, Anthropic, Google, xAI, Plunk and Aiola
- Text leaves the browser only when you explicitly trigger an enhancement; no keystroke logging, no browsing history access
- More than forty IDE and AI platform integrations are listed, and the first purchase carries a 14-day money-back guarantee
Cons
- No free plan, no free trial and no free credits: every use requires a paid plan
- Pro caps enhancements at 200 per month
- Lifetime requires your own API key and a separate provider account, and its price rises in tiers ($69, then $99, then $124)
- No public API and no product API documentation
- No iOS or Android app, and the desktop build covers macOS only
- No DPA published, no hosting country or region stated, no SOC 2 or ISO certification mentioned, and no published position on training models with customer data
- No registered legal entity, postal address or Article 27 GDPR representative is published, contact runs through a Gmail address, and support is limited to a form and email with a 24-hour response on Pro and 8 hours above
Pricing & Plans
PromptDC offers no free plan and no free trial: a paid plan is required from the first enhancement. The lowest entry point is the Pro subscription at USD 9.00 per month, with Enterprise at USD 15.00 per month. A one-off Lifetime licence starts at USD 69.00, but it requires the user's own provider API key, whose consumption is billed separately by that provider at a typical USD 1-3 per month. Payments are processed by Stripe. A 14-day money-back guarantee applies to the first purchase only and does not cover subsequent renewals; a subscription may be cancelled at any time, with effect at the end of the paid period.
- 200 enhancements per month
- unlimited profiles
- 50 prompts and MD files
- full feature access
- priority support with a 24-hour response
- unlimited enhancements
- unlimited profiles
- unlimited prompts and MD files
- full feature access
- dedicated support with an 8-hour response
- your own provider API key required
- unlimited enhancements
- unlimited profiles
- unlimited files
- full feature access
- dedicated support with an 8-hour response
- all supported languages
- the Regular
- JSON
- YAML and XML output formats
- both Writing and Coding modes
- custom prompts
- private files and community access
- The pricing page flagged 'Only 10 spots left at this price' on the Lifetime tier on 17 August 2026
- with announced tiers rising from $69 to $99 then $124
Data, GDPR & hosting
A consolidated view of how PromptDC handles your data.
GDPR overview
The privacy policy devotes a dedicated section to the GDPR and the UK GDPR and lists the legal bases relied on: consent, performance of a contract, legitimate interests, legal obligation and vital interests. Users in the EEA, the UK, Switzerland and Canada are told they may request access, rectification, erasure or restriction, obtain portability, object to processing and refuse decisions based solely on automated processing, and may withdraw consent at any time. Rights are exercised from the account page on the site or by email to spromptdc@gmail.com, and complaints may be filed with a member state supervisory authority, the UK ICO or the Swiss FDPIC. US state rights are detailed across twenty states and the Global Privacy Control signal is honoured. No Article 27 EU representative and no data protection officer are named, and no data processing agreement is published.
Who owns the data?
The terms are explicit that the publisher asserts no ownership over user Contributions: you keep full ownership of the text you submit and of the intellectual property rights attached to it. Provider API keys supplied under the Lifetime plan stay in the browser's local storage and the extension's storage, are not persisted on PromptDC's servers and do not sync between clients, although they transit through the backend on each request. Payment details are collected and stored by Stripe rather than by PromptDC. The text itself is nonetheless transmitted to third-party AI providers, OpenAI by default, for the sole purpose of producing the rewrite you asked for.
Reuse rights
Because ownership of Contributions stays with the user, the submitted text and the rewrites it produces can be reused freely and commercially, without asking PromptDC for permission. On the collection side, the extension sends text only when an enhancement is explicitly triggered through the floating toolbar, the right-click menu or the keyboard shortcut; it does not read browsing history and does not log keystrokes. Sign-up collects email addresses and usernames, while IP addresses, device data, usage logs and location data are gathered automatically. Inputs and outputs are shared with third-party AI service providers, OpenAI among them, in order to run the service. Rewriting profiles and per-site rules sync through the backend when the user is signed in. The stated purposes are service delivery, support, feedback, marketing subject to user preference, security and fraud prevention, and legal obligations. The site takes no position, positive or negative, on whether customer data is used to train models.
Data retention & training
Hosting summary
PromptDC does not say where its data is hosted: no country and no region is named anywhere on the site. What is disclosed is the stack. The backend runs on Supabase, which handles authentication, the database and the edge function that processes enhancement requests, and the site is served behind Cloudflare - the domain resolves to an anycast address, 172.67.204.131, answered from a United States node, which indicates nothing about where user data actually sits. The publisher lists its subprocessors by name: Supabase, Stripe, OpenAI, Anthropic, Google, xAI, Plunk and Aiola. Payments are handled by Stripe, whose own privacy policy is linked. Under the Lifetime plan, provider API keys are not persisted server-side at all: they live in the browser's local storage and the extension's storage and only transit through the backend on each request. No data processing agreement is offered and no hosting or transfer commitment is published, so buyers with data residency requirements will find nothing here to rely on.
Things to keep in mind
Risks and trade-offs to weigh before adopting PromptDC.
- Every enhancement sends your selected text to a third-party LLM provider, so confidential, regulated or client-owned content should be kept out of it
- The extension needs injection permission on all pages, which is a broad surface even though text is only transmitted on an explicit trigger
- No DPA is published and no hosting country or region is stated, which is a blocking point for most corporate procurement
- The Lifetime licence is unusable without your own provider API key: that cost sits on top of the purchase and is not included
- Lifetime pricing rises in tiers and the pricing page displays a scarcity message, both of which push toward a hurried decision, while the refund guarantee covers only the first purchase
- No registered legal entity and no postal address are published, the only contact channel is a Gmail address, and the terms place governing law and arbitration in Greece with proceedings conducted there
- The site takes no position on training models with customer data, and in-place rewriting makes it easy to accept a machine version of your own voice without rereading it, dulling the writing judgement the tool is meant to support
Setup & Integrations
Technical difficulty
Low. Installing the Chrome extension and signing in takes a few minutes and requires no technical skill. The IDE extensions install the same way from the VS Code Marketplace or Open VSX, and the macOS app ships as separate arm64 and Intel builds. There is no server to configure and no integration to code. The only genuinely technical step is bring-your-own-key on the Lifetime plan: you must open an account with OpenAI, Anthropic, Google or xAI, generate an API key and paste it into PromptDC, which assumes some comfort with a provider console.
Deployment
Integrations
Supported languages
Behind PromptDC
Resources
All the official URLs gathered for verification and reference.
Alternatives
Tools that compete with or complement PromptDC.
Frequently asked questions
Is there a free plan or a free trial?
How much does PromptDC cost?
What does BYOK mean on the Lifetime plan?
Where does PromptDC actually work?
Is there a mobile app?
Does the extension read everything I type?
Where do my API keys go?
Which languages are supported for enhancement?
Can I cancel and get a refund?
Which subprocessors does PromptDC use?
Should you pick PromptDC?
PromptDC is a horizontal tool with an unusually wide surface: it acts in any text field on the web and inside half a dozen IDEs, which is what sets it apart from the writing assistants and prompt libraries it names as alternatives. Covering everyday writing and code prompts in the same product is rare among those competitors, and the per-site profile system is what makes the dual positioning practical rather than confusing - Grammar on Gmail, Social on LinkedIn, Code in Cursor, decided for you.
The commercial model is just as atypical. A low subscription at $9 per month sits beside a one-off Lifetime licence from $69 that shifts model costs onto your own provider key, announced at roughly $1-3 of usage per month. Nothing is free: no plan, no trial and no credits let you test before paying, and the 14-day guarantee on the first purchase is the only way back out.
Two weaknesses stand out, and both concern trust rather than product. Corporate transparency is thin: no registered legal entity, no postal address, a single Gmail contact address, and Greek governing law with arbitration in Greece. Data commitments are equally light: no DPA, no stated hosting country or region, no security certification, and complete silence on whether customer data feeds model training. For an individual buying a $69 licence that may be acceptable; for a company routing client text through the extension it is not.
The credit side is real. Subprocessors are published by name, text leaves the browser only on an explicit trigger, provider keys are never persisted server-side, and every rewrite is previewed before it replaces anything. The publisher presents itself as a small, responsive operation with an active update cycle and a public changelog, which fits what it is: a well-executed single-developer utility, priced accordingly.
- Choosing a selection results in a full page refresh.
- Opens in a new window.