<p><b>Startup description</b></p><p>A fully on-device text-to-speech (AI voice generation) app for macOS, custom-built on Apple's MLX framework.</p><p>Voice generation runs entirely on the user's own machine, making it private, offline, and genuinely unlimited (no credits, no usage caps, no metering) - thus also enabling the pay-once revenue model.</p><p>It’s important to understand that this is not a vibe-coded app; it’s an app built over months by an experienced AI engineer &amp; developer with past work to prove it.</p><p><b>Key highlights</b></p><ul> <li>&nbsp;500+ users&nbsp;</li> <li>$24k revenue L6M&nbsp;</li> <li>$20k profit L6M</li> <li>4.9 stars based on 34 reviews on Gumroad</li> <li>Pay-once revenue model&nbsp;</li> <li>Less than 2h per week time to manage</li> <li>1.7x Annual Revenue selling price, lower than the average</li> <li>Over 200 natural voices and an advanced voice cloning feature</li> <li>Over $4,000 in sales in June so far (18th June).</li> </ul> <p><b>How much time does it take to manage the business? </b></p><p>The owner currently spends less than an hour weekly, mostly responding to the occasional user query.</p><p>The business was started in December 2025 and has made an average of $3,439 monthly revenue since. Due to the pay-once revenue model in a subscription-dominated world, the app quickly gathered attention on a Mac-related subreddit, reaching the top 10 all-time posts in less than a week from launch.</p><p>No paid marketing was used to promote the app. Everything had minimal marketing; the owner relied on promoting the product on Reddit and other relevant websites.</p><p><b>Customers</b></p><p>The app serves a wide range of users: Content creators, YouTubers, Educators, Students, and many others.</p><p>Over 450+ licenses were sold and given free or at a discounted price in the past 6 months.</p><p><b>Revenue</b></p><p>The reason why March, April, and May were lower months was the fact that the owner didn’t have time to promote the business, as he was focused on his main one. He started advertising it again in June, which had great results, as you may see.</p><p>The total revenue in the past 6 months was $24,075.</p><p>The total profit in the past 6 months was $20,372.</p><p>The only costs on the business are the Apple Developer fee ($100 yearly) and the 15% Gumroad fee.</p><p>An alternative would be to replace Gumroad with another provider, as only $1,000 came from Gumroad directly. This could lead to an additional $2,000-$4,000 yearly.</p><p><b>Reasons for selling </b></p><p>The owner of this business is a professional developer with many apps created and many years of experience in this field. However, what started as a solution for his problem turned into a solid business that the owner doesn’t have time for anymore. The owner also has a share in a VC-funded SaaS and wants to focus 100% on that.</p><p><b>Notes for interested prospective buyers: </b></p><p>The business generated solid revenue with minimal marketing and relying solely on free channels. There’s a 3-5% landing page conversion rate, and over 95% of the users are extremely happy with the product.</p><p><b>What’s included in the sale </b></p><ul> <li>Domain</li> <li>Source code of the app</li> <li>Handover documentation and support from the owner in the first month (up to 12 hours)</li> <li>Customer-support playbook (the real questions users ask and the proven answers).</li> <li>A full architecture doc explaining how the system actually works.</li> <li>Spec/PRD for executing the roadmap, so the next features aren't guesswork, they're scoped and ready to build.</li> <li>Free session with the broker on how to improve the app.</li> </ul> <p>✅ $24,588 TTM revenue</p><p>✅ 500 customers</p><p>✅ Business model: LTD</p><p>✅ Built with TypeScript, Electron, Python</p>