Zen Labs Fitness
Agent47Agent Readiness: 47/100. Above median. Measured by StartupHub.ai. Median 41.Trust75Data Trust: 75/100. Above median. Measured by StartupHub.ai. Median 61.Zen Labs Fitness develops mobile fitness applications, including the popular C25K (Couch to 5K) app, to help users achieve their fitness goals.
About
Zen Labs Fitness is a company that creates mobile fitness applications designed to guide users through various exercise programs. Their flagship product, C25K (Couch to 5K), helps beginners gradually build up to running a 5K race over an eight-week period. The company focuses on providing structured training plans, community support, and motivational content to encourage users in their fitness journeys.
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Key facts
- Website
- zenlabsfitness.com
- Business model
- B2C
Tech stack
Detected on zenlabsfitness.com, last scanned 20 Oct 2026. Run your own scan
- Hosting
- Hetzner
- Email provider
- Google Workspace
Zen Labs Fitness scores 40. Does yours?
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10 reviews from the App Store gathered in one place
Living a Better Life
Back in July of 2024, I was pushing 270lbs. I was diagnosed with type 2 diabetes and I started sleeping with a CPAP machine. Then one day, I looked myself in the mirror and said enough is enough. I started with C25K and used that several ti…
Miserable Customer Service
I’ve been trying to get an issue fixed for over a month, but customer service keeps giving me the runaround. All I want to be able to do is correct my distances when I run on a treadmill, but the app only accepts commas for decimals, and a…
Very Basic “Training Plan”
I’d seen such good reviews I went ahead and paid for a subscription, but I’m very disappointed. As you progress, the intervals disappear and most weeks are just repeating “Run 2.5 miles (or 25 minutes)”. Chat came up with more creative plan…
My ONLY wish
I love this app/program. I just need the developers to update so that it works with the watchOS 27. I completed C25K and am now working on 10K but just found out that it doesn’t work on my watch. Please, please, please update!
Paid for 10K Pro
Paid for 10K Pro when it wasn’t a subscription model. Haven’t used it for a while, now I’m back to it and used it once. It keeps crashing which I can only assume is to force me to use the subscription model. I’ve moved to another app that h…
Used to be good. What happened?
Bought the app a while back. Suddenly it started crashing. Uninstalled it and reinstalled it, and now it won’t let me use what I ALREADY PAID FOR and could use before without a subscription.
Thank you!
This app has changed my life. I never thought I would be a runner. And here I am about to start the half marathon training. I highly recommend couch to 5k to anyone looking to start their health journey!
Love this app
I am restarting this program in my late 20s because I had great success when I was in high school. I love the progression and the updates to the alert sounds have been great
Paywall to finish?
This is probably a great program, but I don’t want to have to pay to continue to the program. Will be downloading an app that doesn’t have a paywall after the first week.
Just what I need!
I am a casual runner who digs this app. It could have more “bells and whistles” like lowering music for feedback but overall I couldn’t ask for more from a free app.
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Frequently asked
Is Zen Labs Fitness trustworthy and reputable?
StartupHub's Data Trust & Reputation score for Zen Labs Fitness is 75 out of 100, a generally safe rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
Public record
SEC filings, insider activity, nonprofit links and pay benchmarks for Zen Labs Fitness
