PrintCash with AI
MediumSaaSFrontierClear niche and buyerAI model/API accessPayments via Stripe
Verified

AI Studio-Quality Subtitles

AI generates studio-quality subtitles in minutes.

In plain English

FlowSub writes studio-quality subtitles from spoken audio, and it does that job quickly. Podcasters, streamers, and brands pay by the length of the upload, or they can pay to have the work done for them, because typing every line is slow. The AI does most of the listening, the writing, and the billing. No person's name is on the listing. Whoever runs it still checks the wording, answers customers, tells people about the tool, and steps in when a video is an unusual case.

Automation80%
Startup costNot disclosed
Time to first $Not disclosed
Monthly range*$48 MRR

~$48 MRR; $89 verified revenue last 30 days (TrustMRR/Stripe, Oct 28, 2026)

DifficultyMedium
SourceTrustMRR - flowsub.ai ↗

Operator: Not disclosed on TrustMRR

Verified

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

Not disclosed.

The tool stack

Stripe ↗
2.9% + 30¢ per charge

Payments

 Whisper ↗
Pay per minute (API) or free self-hosted

Speech-to-text

 OpenAI API ↗
Pay per token

LLM / vision

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. Transcribe long videos and find the strongest moments.
  2. Auto-crop to vertical with captions.
  3. Sell by upload minutes or as a done-for-you service.
  4. Target podcasters, streamers and brands.

What's automated vs. the human 20%

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

AI generates studio-quality subtitles in minutes.

Operator: Not disclosed on TrustMRR. Category on TrustMRR: Artificial Intelligence. Founded: 2026-02-25. Website: https://www.flowsub.ai/

Estimated split: about 80% of the work automated, 20% human.

Realistic income

TrustMRR (checked Oct 28, 2026) shows about $48 MRR and $89 in Stripe-verified revenue over the last 30 days, $1,036 verified over its tracked history. 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

  • Rights: only clip content you or your client own or license.
  • Competes with large clipping tools.
  • 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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