Apps by Joe Waldow
DE

Hi, I’m Joe! 👋

I’ve been building apps independently since 2014. Every one of them has its own story:

It all started with the substitute timetable at my old school, where you had to find your own entry in one very long list every time. That is what I learned Swift on.

In a statistics lecture it struck me that daily body weight fluctuates exactly like measurements in a study. That became Scelta, together with a pinch of playful motivation. Since 2023 it has also been on Android, built with Christoph Pferschy, the developer of Hydro Coach.

Treeceps came out of my bachelor thesis on gamification: a fitness world where your steps feed the animals and your achievements make flowers grow.

I took the training side of Treeceps further and released it as an app of its own, built entirely around strength training.

Then came a water temperature tracker for the Apple Watch, for ice bathing, the favourite lake and every dip in between.

And a Mahjong in honour of my grandfather, who loved the game so much.

And right after it Solitaire: the same calm, this time with cards. And the question of why the Queen of Hearts left her cards behind.

The apps

Released 2017

Scelta

Weight tracker that shows the trend, not the daily number.

iPhone · iPad · Apple Watch · Android More about Scelta

Released 2019

Treeceps

A virtual fitness world that reacts to your training.

iPhone · iPad · Apple Watch · Mac More about Treeceps

Released 2026

Trainer

Strength training tracker, set by set.

iPhone · iPad · Apple Watch · Android More about Trainer

Released 2026

Water Temperature

Your Apple Watch knows the water temperature.

iPhone · Apple Watch More about Water Temperature

Released 2026

Mahjong

Mahjong without the noise.

iPhone · iPad · Mac · Apple Vision Pro · Apple TV · Android More about Mahjong

Released 2026

Solitaire

Solitaire, a story deal by deal.

iPhone · iPad · Android More about Solitaire

A question or an idea?

Just send me a message. It goes straight to me, not into a ticket system.

Send an email