Independent app studio
Discotto Labs makes focused, science-backed iOS apps.
No clutter. No subscriptions.
VO2Max Timer is built for the Norwegian 4x4 interval protocol — four minutes of work, three minutes of rest, repeated four times. The protocol is one of the most studied methods for improving cardiovascular fitness. One purchase, no subscription, no ads after you upgrade.
Download on the App StoreThe protocol is pre-loaded. Start a session in seconds.
Build any interval pattern: Tabata, 10x1, 8x2, or anything else you need.
Every session is logged and grouped by month. See your consistency over time.
Remove ads, unlock unlimited custom profiles and workout history. No renewal. No paywall surprises.
The studio
Discotto Labs is a one-person iOS studio based in Las Vegas. Every app is built to do one thing well.