Independent app studio · Copenhagen

Apps that keep your data on your phone.

Mads Media is an independent studio in Copenhagen building applications for iPhone. Two so far — Sleepr and LEAN — both built around on-device intelligence, so the most personal thing an app can measure never leaves the device measuring it.

Apps

What we make

Health and body data is the most sensitive category of information most people carry around. We build apps that analyse it without shipping it anywhere — the machine learning runs on the phone, not on a server.

Sleepr

Privacy-first sleep tracker for iPhone

Sleepr listens to your night using a custom machine-learning model that runs entirely on your iPhone. Audio is never stored and never sent — your sleep data does not leave your phone.

Sleep stages — awake, REM, light and deep, with score and efficiency
Sleep recordings — replay snoring, talking, coughing and movement
Daily routine — build habits like caffeine cut-offs and consistent bedtimes
Smart alarm — wake during a lighter phase inside your chosen window

LEAN

Track. Improve. Get LEAN.

LEAN turns a photo into a structured read of your physique. On-device analysis scores your body composition overall and area by area, then builds a training plan around whatever is actually holding you back.

Overall composition score with your realistic potential
Area breakdown — chest, back, shoulders, arms and core
Body fat estimate tracked against your own baseline
AI coach and training plans that adapt to your progress

About

About Mads Media

Mads Media is an independent app studio based in Copenhagen, founded and run by Mads Drejsig Thorsen.

The studio builds its own products rather than taking on client work. Everything — design, development, App Store release and ongoing support — happens in-house, which means decisions are quick and the person who wrote the code is the person who answers your email.

A consistent principle runs through both apps: analysis happens on your device. Sleep audio and body photographs are among the most personal data a phone can capture, and neither app uploads them. The machine-learning models run locally on the iPhone, so there is no server holding your recordings and no account to breach.

Mads Media is registered as a business in Denmark under CVR number 46062299, with its registered address in Valby, Copenhagen, and operates under Danish and European law, including the GDPR.

Registered name: Mads Media
CVR: 46062299
Founded & run by: Mads Drejsig Thorsen
Registered address: Torveporten 20, 5. 22
2500 Valby
Denmark
Apps: Sleepr · LEAN

Support

Get in touch

Questions about Sleepr or LEAN, a bug to report, a privacy request, or anything else — it all goes to the same inbox and reaches Mads directly.

Messages are normally answered within one to two business days. If you are reporting a problem, it helps to include your device, your iOS version, the app version, and a short description of what you were doing when it happened.

MadsThorsen76@gmail.com

Support, bug reports, press and general enquiries.

Privacy requests

MadsThorsen76@gmail.com

Data access, correction and deletion requests under the GDPR. Please write “Privacy request” in the subject line.

Business details

CVR 46062299

Registered business in Denmark. Company details are publicly available in the Danish Central Business Register.