Jacob Bluhm
Founder ยท Quack Quack Labs

Jacob Bluhm

I build small, honest apps for Apple platforms, one duck at a time.

I'm an indie developer in Colorado, and Quack Quack Labs is my one-person studio. I design, build, and ship the whole thing myself: the apps, the games, the art, and the site you're reading now. Most of what I make lives on Apple Watch and iPhone and runs on sensors like heart rate, motion, and health. A few are games. One is on the App Store, and more are close behind.

What I'm building

A mix of watch apps, iPhone companions, games, and tools. Here's where each one stands today.

Cohera app icon
Live on the App Store

Cohera

Heart-coherence training for Apple Watch. Pick a rhythm, close your eyes, and gentle haptics pace your breath while a calm visual drifts on screen. When you're done, you get one honest score from 0 to 100. One-time $0.99, no subscription, no ads.

Download on the App Store
Lane Caddie app icon

Lane Caddie

Bowling, measured. An Apple Watch worn on your bowling hand keeps score with a tap and picks up every shot on its own, then turns your delivery into something you can actually read.

Coming soon Visit site
Smart Sips app icon

Smart Sips

Blood-alcohol awareness on your wrist. Log a drink, watch the countdown to 0.00%, and check in on how you feel along the way. A discreet companion, and never a green light to drive.

Coming soon

QuackTime

A Pomodoro timer for iPhone and Apple Watch that actually wakes you. Real alarms, kept in sync across both devices so the timer on your wrist and the one in your pocket never disagree.

In progress

Headway

An audio companion for walks. Part workout, part journal, it listens to your heartbeat from your AirPods while you talk things out and turns the walk into something you keep.

Early concept

Also in the pond

Games and tools that round out the studio.

Game

Paws of Gold

A retro platformer. Maggie, a golden retriever, crosses twelve worlds to bring color back to a gray one. Built in Godot.

Game

Math Dash

Sixty-second math drills in three difficulties. A quick way to keep your head sharp.

Game

The Pond

The little duck game you can play right on the home page.

Tool

MTG Analyzer

A Magic: The Gathering deck-analysis tool I run by talking to it: it scores decks, spots combos, and suggests upgrades.

How I work

Small and honest

My apps don't oversell. Cohera gives you one score, not a diagnosis. Smart Sips estimates your BAC and still refuses to call you safe to drive. I would rather ship something modest that tells the truth.

Watch-first

The wrist is the interesting part. It's where the sensors are, and where a glance is enough. I start there and let the phone be the big screen when a task needs one.

Ship, then learn

One app is live, a few are close, some are still sketches. I put things in front of people and keep going, which is the only way I know to find out what's worth finishing.

Say hi

Building something, hiring, or just want to talk shop about watch apps? I read every email.

[email protected]