PrintCash with AI
MediumSaaSLocalClear niche and buyerA Mac or phone that can run the model locallyPayments via Polar
Verified

Local Speech-to-Text Mac Menu Bar App

Sayline is a powerful, native macOS menu bar application that brings state-of-the-art, local speech-to-text transcription to any text field on your Ma…

In plain English

Sayline is a Mac menu bar app that types what users say into any text box. The speech model runs locally on Apple chips, so audio stays private. Users pay for the app. TrustMRR shows about $80 in total revenue, with none in the last 30 days. The Mac does the typing, while the owner sells the app.

Automation90%
Startup costNot disclosed
Time to first $Not disclosed
Monthly range*$80 Last 30 days

$80 verified revenue all-time, none in the last 30 days (TrustMRR/Polar, Oct 29, 2026)

DifficultyMedium
SourceTrustMRR - Sayline ↗

Operator: Martas

Verified

Revenue independently checked: documents reviewed by a publication, or a public dashboard.

Not disclosed.

The tool stack

Polar ↗
4% + 40¢ per transaction

Payments / merchant of record

 Core ML ↗
Free with Xcode

On-device model inference

 llama.cpp ↗
Free (open source)

Runs open models locally

Prices are the vendors' published list prices as researched in Oct 2026 and change often — always check the vendor's pricing page.

Step-by-step setup

  1. Pick one job people would rather keep private on their own computer.
  2. Run open or on-device models locally so nothing is uploaded and there is no per-use model bill.
  3. Sell a license or subscription with a free trial.
  4. Grow through Mac/desktop app communities, search and word of mouth.

What's automated vs. the human 10%

The machine does

  • Core AI generation/analysis
  • Billing and onboarding

You still do

  • Product quality and support
  • Distribution and marketing
  • Compliance and edge cases

Overview

Sayline is a powerful, native macOS menu bar application that brings state-of-the-art, local speech-to-text transcription to any text field on your Mac. Built with SwiftUI and optimized for Apple Silicon, it offers high-performance, private, and customizable dictation that works across all your applications.

Operator: Martas. Category on TrustMRR: Productivity. Founded: 2026-01-28. Website: https://sayline.app/

Estimated split: about 90% of the work automated, 10% human.

Realistic income

TrustMRR (checked Oct 29, 2026) shows $0 in Polar-verified revenue over the last 30 days, $80 verified over its tracked history. No sales in the last 30 days, so treat it as an early or slowing product. This is one operator’s result, often after months or years of work, and doesn’t predict yours. Check the live listing — numbers change.

Risks

  • Free open-source alternatives exist.
  • Must keep up with OS and model updates.
  • Startup cost and time to first dollar are not disclosed.

*Income figures are illustrative ranges based on public pricing and typical outcomes reported by practitioners, not guarantees. Most new online businesses earn little or nothing at first. Not financial, legal or tax advice.

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Automation
90%
Difficulty
Medium
Startup
Not disclosed

Revenue

$467 Last 30 days

$467 verified revenue last 30 days, mostly non-recurring (TrustMRR/Polar, Oct 29, 2026)

Verified
PolarCore MLllama.cpp Clear niche and buyerA Mac or phone that can run the model locallyPayments via Polar
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