Now in beta on TestFlight
From zero
to your first 5K.
Join the betaPrefer an invite? Email hello@just5k.com and we'll add you.
What Just5K does
Short walk-run sessions, three times a week, with a voice that tells you when to jog and when to walk. You move on when you finish the work, not when the calendar says so.
Three programs, one ladder.
Gentle Start, First 5K, then 5K to 10K. Finish one and the next one is ready.
Eyes on the road.
A voice calls every jog and every walk. Your music dips for a second, then comes back.
Miss a day, lose nothing.
The plan moves when you finish a session, not when the week ends. Skip one and it waits, or you run it on the rest day after.
Your watch already counts.
Record a run with your Apple Watch or another app and the session is ticked off. Steps, sleep and resting heart rate sit on Home, straight from Apple Health. All optional.
Sick, hurt or just away?
Say so and the plan pauses: no sessions, no reminders. After a long break it steps back a week or two, so you never restart cold.
See the work you did.
A calendar of every session, your weekly count and your streak. No pace charts.
Pricing
Free to your first 5K. Pay once to go on.
No subscription and no account.
Just5K
FreeFree
Gentle Start and all eight weeks of First 5K, the 5K itself included. History, Apple Health, Strava, reminders and tips are always free.
Just5K Plus
One-time purchase$9.99
once5K to 10K from week 2, and every program that comes after it. Pay once and keep it. No subscription.
One purchase covers your family with Family Sharing. The App Store shows the price in your currency. The beta on TestFlight is free in full; Plus arrives with the App Store release.
FAQ
Questions before your first run.
Short answers here. The rest is in Help.
Is Just5K free?
The whole road to your first 5K is free: Gentle Start and all eight weeks of First 5K. Going on to 10K is Just5K Plus, a one-time $9.99 purchase. No subscription and no account.
How do I get the beta?
Tap Join the beta. It opens in TestFlight, Apple's app for trying apps before release; if you don't have it, the page tells you to install it first. Accept, install, and you are in. iPhone with iOS 26 or later. The beta is free in full, and new builds arrive through TestFlight.
Do I need an Apple Watch?
No. Your iPhone handles the voice cues and the route. Keep it in a pocket or on an armband. If you do have a watch, runs you record on it count toward the plan.
Does it work with Strava?
Yes. Turn it on in your profile and every finished session goes to your Strava account with its time, distance and route.
I have never run. Where do I start?
You pick a program when you set up the app. If you haven't moved much in a while, start with Gentle Start: it opens with 15-minute walks. You can switch programs any time from your profile.
What if I miss a session?
Nothing is lost. Progress counts the sessions you finish, not the dates. A week waits for you until its sessions are done, or two of them once seven days have passed.
Can I listen to music while I run?
Yes. The voice cues lower your music for a moment, then it comes back.
Just5K
Your first run
can start as a walk.
Session one takes 25 minutes.
Join the beta