Sealis
Your voice, kept yours, wherever AI writes or speaks for you
Sealis keeps your voice consistent when AI rewrites your text. It edits drafts into your own style, checks that numbers, dates and names are unchanged, and
About this launch
Sealis is an applied voice lab that measures and preserves your writing voice when AI assists with text creation. The platform works by analyzing your writing samples to model how you write, then rewrites AI-generated drafts toward your voice while keeping all facts, numbers, dates and names intact.
For individuals, Sealis offers the Humaniser tool to rewrite drafts in your own voice and Score to measure how closely a draft matches your writing habits. For studios and agencies, Studio provides a saved voice per client with approval pages where clients can review and request changes.
Sealis also measures voice across audio (cadence, breath and pauses) and is exploring how voice consistency could extend to images and recorded video. The company builds on published research and testing to ensure its voice-matching models work without changing content.
What it does
- Rewrite drafts in your voice while keeping facts, numbers and dates unchanged
- Measure drafts for stock phrases, rhythm, word choice and punctuation
- Save and learn from your writing style with every correction
- Studio: save a voice per client with approval pages
- Free Score tool with no signup required
Pricing
Pricing model: Freemium
Free: A$0/month with 10 rewrites per month and 1 voice. Pro: A$11.99/month with 150 rewrites per month (currently on waitlist). Studio: A$34.99/month for up to 5 clients, each with their own voice, 300 rewrites per month, and client approval pages.
Shopper questions
Is Sealis a paraphraser?
No. Sealis models how a particular person or brand writes from their own samples and rewrites a draft toward that voice while keeping its meaning, facts and numbers. A paraphraser swaps words so text looks different.
Will it make my writing casual?
No. If your samples are formal, rewrites stay formal. Score does not penalize formality; it looks for template phrasing and flat rhythm, not register. A plain, precise formal letter scores well.
Does Score tell me who or what wrote something?
No. Score measures stock phrases, rhythm, word choice and punctuation, and how close a draft is to a saved voice. It does not identify who or what wrote something.
What happens to my text?
Score's measured signals run on Sealis's own server with no AI model involved in that part. Rewrites are produced by an AI model run by Microsoft (Azure), with Google's Gemini as a backup. Your text is sent to that provider under its terms in the privacy policy. Sealis Labs only uses text for research if you opt in, and you can export or delete your data anytime.
What is Studio?
Studio is for people who write in more than one voice: a saved voice per client or brand, a match score on every draft, and a private approval page where clients review work. It costs A$34.99 per month for up to 5 clients with a free 7-day trial and no card required.
Sealis has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
