Everything you need to know about GymTime
GymTime tells you exactly when you can workout based on your real calendar.
Not "you should workout at 6am." More like: "You have 42 minutes if you leave in 8 minutes."
It reads your calendar, calculates travel time to your gym, accounts for real-world overhead (changing, packing your bag, checking in), and tells you when you actually have time to work out.
Your calendar shows gaps. GymTime shows opportunities.
You might see "2pm-5pm free" on your calendar. But GymTime knows:
So that "3-hour gap" is actually a realistic 2-hour workout window if you leave by 2:10pm. GymTime does this math for you, in real-time, accounting for schedule changes.
The core engine works. Calendar integration works. Live countdown on your lock screen works. Travel-time math accounts for real traffic via Google Maps.
The honest answer: "works" is partly subjective. If your calendar is reasonably accurate and your gym is reachable, GymTime surfaces real windows you'd otherwise miss. If your calendar is empty or always wrong, no app can fix that.
When it launches, the 7-day free trial is the fastest way to know if it works for your life.
Yes. Your calendar data never leaves your device.
Here's how it works:
What we DO store: Your gym preferences, your workout history (when you worked out, not what you did), and your settings. That's it.
Because we can't tell you when you can workout without knowing when you're busy.
Without calendar access, we're just another "workout at 6am every day" app. With it, we can tell you "your 3pm meeting just got canceled — you have time for a 45-minute workout if you leave now."
You control it. You can revoke calendar access anytime in iPhone Settings → Privacy & Security → Calendars.
Technically yes (that's how calendar permissions work), but we only care about when you're busy, not what you're doing.
We read event start times, end times, and locations. We ignore titles, descriptions, and attendees. Your "Therapy appointment" and "Team meeting" look the same to us: blocked time.
You answer a few questions (takes about 2 minutes):
Then you connect your calendar, and the app shows you when you can workout right now.
That's the moment we're testing: does it feel accurate? Would you actually leave?
When you have a workout window, GymTime puts a live countdown on your lock screen.
You can see exactly how much time you have left without opening the app. It changes color as time runs out (blue → orange → red) and plays an alarm when your window closes.
It's the same kind of live update you see for Uber rides or sports scores — just for your workout instead.
Yes. Once you know when you can workout, GymTime generates a workout based on:
It's AI-generated (powered by Claude), not a library of pre-made workouts. Every workout is custom to your situation.
No. GymTime supports three planning styles. New accounts start in automatic mode, and you can choose or switch any time in Settings → Workout Schedule:
The same AI workout generation, lock-screen countdown, and travel-time calculations work for all three.
Yes — that's exactly what Routine-driven planning is built for. You configure:
Then GymTime suggests workouts inside your routine, never during your blocked times.
Use Flexible planning. Tell us how many workouts a week you want (default: 3), and GymTime watches your patterns over time. After a few sessions it learns when you actually show up and starts suggesting moments at those times.
This works well for: shift workers, parents with unpredictable kid schedules, freelancers with variable days, anyone who tried "go at 6am every day" and bounced off.
Coming soon to the iPhone App Store. We're in final review now. Bookmark gymtime.ai and check back shortly.
Requires iOS 16.1 or later. We're iPhone-only right now — Android isn't planned.
Three options:
Subscriptions auto-renew unless cancelled at least 24 hours before the end of the period. Manage in Settings → Apple ID → Subscriptions. The Lifetime plan is a one-time purchase and does not auto-renew.
Fair question. Here's what you should know:
Red flag check: If you ever get an email asking for your Apple ID password, it's a scam. Apple and GymTime will never ask for your password.
This could mean:
If none of these apply, there might be a bug. Email us a screenshot at [email protected].
We want to know.
Email us at [email protected] with:
We respond to every email, usually within a few hours.
Me. Chaz Chamberlain. Solo founder, solo developer.
I built this because I kept skipping the gym not from lack of motivation, but because I genuinely didn't know when I had time. My calendar was a mess of meetings, errands, and last-minute changes.
I wanted an app that would just tell me: "You can go NOW if you leave in 8 minutes." So I built it.
Real company. Reign Zero LLC. Registered business, trademarked name, real monetization plan.
This isn't a nights-and-weekends thing that'll disappear in 6 months. This is what I'm building full-time.
Right now, no. V1 is designed for people who go to a physical gym.
If you work out at home, in a park, or anywhere without a fixed location, the current version won't be useful. The whole engine is built around "travel time to the gym" as part of the calculation.
That said, this is exactly the kind of feedback I want. If enough people ask for home workouts, I'll build it.
The current app already ships with:
Future work being prioritized:
Email us if there's something specific you want — we read every message.
GymTime launches on the iPhone App Store shortly. 7-day free trial when it lands.