MediumMobile AppLocalClear niche and buyerA computer or phone that can run the model locallyPayments via RevenueCat

Verified

Golf Shot Tracer App With On-Device AI Ball Detection

Tap the ball and on-device AI draws its flight on your golf video.

In plain English

FairwayFX is a phone app that draws the flight of a golf ball on a video of your swing. You tap the ball and the app's AI finds it in every frame and draws a glowing line behind it. The AI runs on the phone itself, so the video does not have to be sent anywhere. Golfers share the clips and pay a subscription.

Automation90%

Startup costNot disclosed

Time to first $Not disclosed

Monthly range*$5,262 MRR

~$5,262 MRR; $7,114 revenue in the last 28 days (whatsthe.app via RevenueCat, snapshot Oct 1, 2026)

DifficultyMedium

Sourcewhatsthe.app - FairwayFX ↗

Operator: Emmett Deen (Deen Venture Studio)

Verified

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

Not disclosed.

The tool stack

RevenueCat ↗

Free up to $2.5k MTR

Mobile subscriptions

App Store ↗

$99/yr

iOS distribution

Core ML ↗

Free with Xcode

On-device model inference

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

Pick a moment people already film and share: golf swings.
Train or use a small vision model that finds the ball and runs on the phone itself.
Draw the ball flight on the video so the clip looks like TV golf.
Subscription with a trial; grow because every shared clip shows off the app.

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

Shot-tracer app: the user taps the ball and an on-device machine-learning model tracks it frame by frame to draw the ball flight on golf videos (formerly Golf Shot Tracer); built by a one-person studio.

Operator: Emmett Deen (Deen Venture Studio). Website: https://fairwayfx.com/

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

Realistic income

whatsthe.app, an app marketplace that reads sales straight from RevenueCat, showed (snapshot Oct 1, 2026) about $5,262 MRR from 987 active subscriptions and $7,114 of revenue in the last 28 days. 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

One snapshot only (Oct 1, 2026); no second dated figure exists.
Tracking can fail in bad light or busy backgrounds.
Other shot-tracer apps and golf launch monitors compete.
Built by a one-person studio, so updates and support depend on one owner.
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.