The 75 HARD challenge is intense. But it's also the most rewarding thing you'll ever do. Track every win with 75 Proof — the free app that celebrates your commitment without spying on your data.
45 min each. One outdoors. Yes, even in the rain.
You choose. No alcohol. No cheat meals. Commit.
One gallon of water. Every. Single. Day.
Non-fiction. No audiobooks. Old school brain food.
Snap it. Document the journey. Future you will cry.
Skip one task? Day 1. Again. That's the whole point.
Neuroscientist Dr. Andrew Huberman from Stanford found that your brain's Anterior Mid-Cingulate Cortex (AMCC) grows when you do difficult things on purpose.
Not metaphorically. Physically grows. Like a muscle after a workout. Every time you push through something you wanted to quit, your AMCC builds new neural tissue.
And people with the biggest AMCCs? They're called “super-agers” — they live the longest and stay the sharpest. It's the only brain region consistently linked to longevity + cognitive health.
“The AMCC grows when we do things we don't want to do. It's larger in people who live longest.”
— Dr. Andrew Huberman, StanfordResearch across hundreds of peer-reviewed studies confirms what doctors have known for decades: just 30 minutes of moderate exercise per day dramatically reduces the risk of the most prevalent chronic diseases of our time.
From cardiovascular disease and Type 2 diabetes to depression, Alzheimer's, and multiple forms of cancer, the protective effect of regular movement is robust, dose-dependent, and accessible to people of every age and fitness level.
The 75 HARD protocol requires 90 minutes of daily exercise — triple the minimum effective dose. Participants are essentially administering a pharmaceutical-grade intervention through movement alone.
No trials. No premium. No "just $9.99/month." We built this for the community. It costs you nothing.
We don't sell your habits or your progress photos. Your information is yours. Period. Full stop.
Open. Tap what you did. Done. No tutorials, no onboarding flows, no "engagement" tricks. Just tracking.
75 HARD is a 75-day mental toughness program created by Andy Frisella. Every day you must complete six tasks: two 45-minute workouts (one outdoors), follow a diet with no alcohol or cheat meals, drink a gallon of water, read 10 pages of non-fiction, and take a progress photo. Miss any single task and you restart from Day 0.
Yes — 100% free, forever. No premium tier, no ads, no in-app purchases. We built 75 Proof for the community, not for profit.
Tap the workout card on your dashboard, mark it as indoor or outdoor, log the duration and type, and you're done. 75 Proof checks that you've logged two 45-minute sessions (one outdoor) before marking the day complete.
Per the official 75 HARD rules, missing any single task resets your challenge to Day 0. 75 Proof enforces this automatically — there's no way to skip or backfill. That's the whole point of the challenge.
Yes. We don't run ads, we don't sell your data, and progress photos are private by default. Your information is yours — period.
Yes! 75 Proof is a Progressive Web App (PWA). On iOS, open it in Safari and tap "Add to Home Screen." On Android, Chrome will prompt you to install it. You'll get an app icon and full-screen experience with no app store needed.
75 Proof offers multiple visual themes for your dashboard including Minimalist, Brutalist, Vaporwave, and more. Switch anytime from the settings — your data stays the same, only the look changes.
Most alternatives charge money, run ads, or collect your data. 75 Proof is free, ad-free, and privacy-first. It's also a web app that works on any device — no app store download required — with a guest mode so you can try the full dashboard before signing up.
Day 1 starts when you decide it does.