Paste Your Writing
Drop in emails, posts, scripts, or any content that sounds like you. No account required to try it.
AI tone analysis for founders, creators, and agencies
Make every AI draft sound like your brand in under 60 seconds.
Tonelocked analyzes your real writing, scores your brand voice, rewrites generic copy in your tone, and gives you a reusable Signature Prompt for ChatGPT, Claude, Gemini, and every AI tool your team already uses.
Paste text → results in secondsNo signup or credit cardWorks in any prompt box
Live Voice Scan
ToneClear + brave
Voice Score82%
RewriteReady
Trusted by voice-led teams testing sharper AI writing
Northstar Copy Co.OrbitStackLumen AdvisoryFounder NotesStudio RidgeLaunchDesk
How It Works
Three steps to AI Voice Lock.
Stop re-explaining your voice to every AI. Lock it in once — use it everywhere.
Get Your Voice DNA
The Tone Scan engine maps your tone, rhythm, vocabulary, and signature phrases into a Voice Fingerprint.
Copy Your Signature Prompt
Paste it into ChatGPT, Claude, or any AI. Every draft now starts from your voice — not a generic blank.
Tone Scan · Free Demo
Try the product before you sign up.
Paste any writing sample to get live tone analysis, a brand voice score, specific suggestions, and a before/after rewrite you can use immediately.
Instant tone analysis · No account required · Your data is never stored
Your Voice DNA appears here
Click Analyze My Writing to get tone analysis, a brand voice score, suggestions, a before/after rewrite, signature phrases, Voice Fingerprint, and a copy-ready Signature Prompt.
Onboarding
First value before the signup form.
Tonelocked keeps onboarding intentionally tiny: paste text, see value, then upgrade only when the output earns it.
Paste writing
Use the free analyzer before creating an account.
See first value
Get tone analysis, score, rewrite, and Signature Prompt.
Upgrade when ready
Choose monthly or annual Pro only after the demo proves value.
Voice Transformation
Never sound generic again.
Every AI writes the same draft. Voice DNA makes yours unmistakably different.
"We help businesses grow with AI."
"We help ambitious brands sound unmistakably human—every single time AI writes."
Your Signature Prompt works in any AI tool you already use.
ChatGPTClaudeGeminiGrokPerplexityCursorNotion AIMicrosoft Copilot
Voice Intelligence Platform
The full AI Voice Lock stack.
Tonelocked turns your archive into a living Voice DNA system your whole team can use — before any draft leaves the building.
Voice DNA
Maps your tone, rhythm, vocabulary, and persuasive patterns from real writing samples — the genetic code of your voice.
Tone Scan
Instant AI analysis of your sentence structure, word choice, reading level, brand personality, and signature phrases.
PromptForge
Transforms your Voice DNA into copy-ready Signature Prompts for every major AI model — paste once, sound like you forever.
Signature Prompt
A reusable system prompt you drop into ChatGPT, Claude, Gemini, or any prompt box so AI drafts start from your voice, not a blank.
AI Voice Lock
Locks your writing style so AI outputs never drift back to generic corporate filler, no matter who on the team is prompting.
Voice Fingerprint
A one-paragraph Voice Intelligence summary of what makes your writing unmistakably yours — shareable with any AI or collaborator.
Multiple Brand Profiles
Manage distinct Voice DNA profiles for founders, products, clients, newsletters, and campaigns — all in one workspace.
Tone Engine
Understands the subtle patterns — cadence, proof style, opener rhythm — that give your voice its edge and keeps them consistent.
Team Collaboration
Share your locked voice system with teammates, contractors, and agency clients so every output starts on-brand.
Content Memory
Preserves signature phrases, beliefs, proof points, and recurring story arcs so your voice evolves intentionally, not accidentally.
Voice Intelligence Dashboard
Your Voice DNA command center.
Monitor tone consistency, rhythm, signature language, and Voice Intelligence scores across every profile and campaign.
Voice Lock Score94%
Tone Consistency91%
Reading LevelGrade 8
Tone Scan86%
Sentence Rhythm78%
Emotional Signature82%
Voice DNA Consistency93%
Signature Words
specific · useful · human · sharp · momentum
Voice Fingerprint
Confident openers, proof-led claims, crisp transitions, memorable closing lines.
Pricing · Simple and transparent
Start free. Lock your voice when it becomes workflow.
Try tone analysis free. Upgrade to Pro monthly or save 20% annually when Voice DNA becomes part of how your team ships content.
$0
Try the Tone Scan and see your Voice DNA — no credit card needed.
- One Voice DNA profile
- Five Tone Scans
- One Signature Prompt export
- Community support
Recommended
Tonelocked Pro$29/month
For creators, agencies, and founders who ship AI-assisted content every week and can't afford to sound generic.
- Unlimited Voice DNA profiles
- Unlimited Tone Scans and rewrites
- Unlimited Signature Prompt exports
- Priority Tone Scan processing
- Early access to integrations
$99/month
Design-ready team tier for shared Voice DNA governance, approvals, and integration beta access.
- Everything in Pro
- Shared workspaces
- Role-based profile access
- Team analytics roadmap
Custom
For companies planning API, webhooks, security review, audit logs, SSO, or content governance.
- Custom retention controls
- Audit log exports
- API and webhook planning
- Dedicated support
FeatureFreeProTeamEnterprise
Free Tone Scan5 scansUnlimitedUnlimited + shared workspaceCustom
Voice DNA profiles1UnlimitedUnlimited team profilesCustom governance
Before/after rewritesDemo onlyUnlimitedTeam libraryCustom workflows
Brand voice scoreIncludedIncludedTeam reportingExecutive reporting
Integrations roadmap—Early accessChrome/Gmail/Slack betaAPI + webhooks
SupportCommunityPriority emailPriority emailDedicated success
Trust · Privacy · Support
Built for voice data you would not paste everywhere.
Tonelocked exists because AI made every smart team sound average.
We are building a practical voice layer for people whose words are part of their moat: founders, creators, agencies, and teams that need sharper AI writing without losing identity.
Your writing stays yours.
Demo text is analyzed only to return your result. Published policies cover data use, cookies, terms, deletion, and support paths.
Designed for stronger controls as teams grow.
The backend isolates analyzer, checkout, and webhook concerns so rate limiting, validation, audit logging, SSO, API keys, and retention controls can be added without rebuilding the product surface.
Need help or a data deletion?
Email hello@tonelocked.ai for checkout help, account access, privacy requests, partnerships, and integration planning.
Contact supportSocial Proof · Real results
Teams that locked their voice and never looked back.
★★★★★
"Tonelocked cut our first-draft editing time by 42%. Client work finally sounds like the strategist who sold it."
Maya ChenFounder, Northstar Copy Co.
★★★★★
"We exported one Signature Prompt into Claude and ChatGPT. The team stopped rewriting every AI draft from scratch."
Julian TorresHead of Growth, OrbitStack
★★★★★
"Our founder's Voice DNA stayed consistent across LinkedIn, email, and sales pages — without turning into generic SaaS copy."
Priya RamanContent Director, Lumen Advisory
Your content is encrypted.
You own your data.
Delete your data anytime.
Never used to train public AI.
Secure cloud storage.
Growth Architecture
Design-ready for integrations after launch.
Not every integration is built today, but the product contracts are shaped so the next team can add them deliberately.
FAQ
Questions about AI Voice Lock?
How does Tonelocked work?
Paste or upload writing samples. Tonelocked's Tone Scan engine maps your tone, vocabulary, sentence rhythm, and brand personality into a reusable Voice DNA profile — then PromptForge converts it into a Signature Prompt you paste into any AI.
Which AI tools does the Signature Prompt work with?
Tonelocked creates portable Signature Prompts for ChatGPT, Claude, Gemini, Grok, Perplexity, Cursor, Notion AI, Microsoft Copilot, and any other prompt-based AI tool.
Can agencies manage multiple brand voices?
Yes. Pro supports unlimited Voice DNA profiles so agencies can keep every client voice separate, organized, and exportable with its own Signature Prompt.
Can I upload YouTube transcripts or video content?
Yes. Paste a transcript or upload text exported from a video workflow to capture spoken cadence and signature phrases into your Voice Fingerprint.
What content types work best?
Tonelocked is designed for PDFs, newsletters, blog posts, social posts, email archives, and transcripts. The more examples you provide, the sharper your Voice DNA.
How accurate is the Voice DNA profile?
Accuracy improves with more samples. A few strong examples produce a useful Signature Prompt, while a larger library creates a more precise Voice Fingerprint.
Can teams collaborate on a shared voice?
Yes. Pro includes team collaboration so strategists, writers, editors, and founders all prompt from the same locked Voice DNA profile.
Is my content private?
Yes. Your content is encrypted, remains yours, can be deleted anytime, and is never used to train public AI models.
How long does a Tone Scan take?
Most Voice DNA profiles are ready in under a minute for pasted text. Priority processing is included with Pro.
What happens if checkout is cancelled?
You land back on a friendly recovery page with options to retry Pro, continue with the free demo, or contact support — never a dead end.
Can I cancel anytime?
Yes. Tonelocked Pro is month-to-month — cancel whenever your workflow changes. Annual customers can contact support for account changes.
SEO Guides · AI Writing + Brand Voice
Learn how to build a Voice DNA system that scales.
AI Writing Without Generic ChatGPT Voice
The hidden patterns that make AI writing feel interchangeable — and how a locked brand voice lets you escape them.
Run the free analysis →Brand Voice Analysis in 10 Minutes
A practical framework for collecting writing samples, running tone analysis, and deploying your first Signature Prompt.
Run the free analysis →The Future of Tone Analysis APIs
Why every serious creator and agency will soon treat Voice DNA as brand infrastructure across Chrome, Gmail, Slack, and public APIs.
Run the free analysis →Your competitive advantage
Your voice is your edge. Lock it in.
Creators, founders, and agencies who sound unmistakably like themselves win attention. Start your free Tone Scan — no credit card required.