Free tools for shift workers
Five free utilities I built for nurses, firefighters, EMTs, and anyone working off the standard 9-to-5 schedule. No signup, no paywall, no email required. Just answers.
Caffeine Cutoff Calculator
Find the exact time to stop drinking coffee so it won't wreck your sleep after your shift.
Calculate cutoff →Shift Sleep Calculator
Get your exact sleep window after a long shift — when to sleep and when to wake.
Plan your sleep →Should I Work Out Today?
60-second quiz that tells you whether to train, walk, or rest based on shift, sleep, and recovery.
Take the quiz →Post-Night Shift Checklist
The exact protocol to actually sleep after a night shift. Interactive, savable, no signup.
Start checklist →Fatigue Risk Check
Free 60-second assessment that tells you if you are safe to drive home after a long shift.
Check fatigue level →Want all of this automated, every shift?
FuelTrainr does all of this for you — automatically. It knows your shift schedule, calculates your caffeine cutoff, plans your meals around your hours, suggests workouts based on your recovery, and reminds you of your post-shift routine. Built specifically for shift workers.
Start 7-Day Free Trial →No credit card required · Cancel anytime · 30-day guarantee
Why I built these
I'm Guillo. I've worked rotating shifts in pharmaceutical manufacturing for years. Every fitness app I tried assumed I was eating breakfast at 8am and going to bed at 11pm. None of them fit my life.
These five tools are the most-asked questions I get from shift worker friends: when to stop caffeine, when to sleep, whether to work out, and what to do after a brutal night shift. They're free forever. If you want the whole system automated, FuelTrainr does that — but the tools work on their own.
— Guillo, founder · FuelTrainr