Mariposas
About Mariposas
By Zachary, builder of Mariposas
· Last updated June 2026
Mariposas is a gamified fitness app for iOS: you log workouts, runs and classes, build a streak, and collect cute pets and outfits for showing up. We believe the hardest part of fitness is consistency, so we made consistency fun.
Zachary, builder of Mariposas
I'm an independent developer and I built Mariposas as a solo project. I made this site to share the same accurate fitness data the app runs on. I draft the explanatory copy with AI assistance and review it myself against our datasets and published sources, I never invent statistics, and I don't claim credentials I don't have.
Why we publish these tools
Every exercise guide, calculator and class-calorie table on this site is powered by the same structured data that runs inside the app, the exercise library, the MET-rated class catalog, and our running programs. We publish them free because accurate, no-nonsense fitness information should be easy to find, and because the best way to understand the app is to use the tools it's built on.
How our content is made
Numbers and facts, muscles worked, MET values, calorie formulas, training paces, come directly from our datasets and from published exercise-science sources (see our methodology and references). We use AI assistance to draft the explanatory text around that data, and the Mariposas team reviews it. We never invent statistics, and we don't claim credentials we don't have.
Get in touch
Questions, corrections, or feedback? Contact us, we read everything.