Heads up: this post has an affiliate link. If you buy through it I may earn a small commission, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. I only recommend stuff I’d tell a mate to buy. The app links go straight to each app's own page, with no commission.
For most UK beginners, the best Couch to 5K app costs nothing: it's the free NHS one. I'm James Gonzo, a beginner-friendly coach in Heywood, and "which app should I use?" is one of the first things people ask before they start.
I haven't road-tested every app here, so I won't pretend I have. This comes from the NHS pages and each app's own store page, all checked on 24 October 2026. Where it's my view, I say so. Where I couldn't confirm a price, I've left it out.
The quick answer
Start with the free NHS Couch to 5K app. The NHS describes it as a free programme that takes you from the couch to running 5km in 9 weeks, or longer if you need it. You run three times a week, with rest days between, and you finish running for 30 minutes.
The app comes from the Department of Health and Social Care, made with the BBC. GOV.UK says it has had more than 7 million downloads since 2016, with 9.3 million runs started in 2024. On 24 October 2026 the UK App Store showed 4.8 from 403k ratings, and Google Play showed 4.9 from 70k reviews.
Pay for another app only if you want something specific: the plan on your watch, a different voice in your ears, or a plan for after your first 5K.
The apps compared
Prices checked on 24 October 2026. They change, so check the store before you pay.
| App | UK cost | Plan | Best for |
|---|---|---|---|
| NHS Couch to 5K | Free | 9 weeks, 3 runs a week | Most beginners |
| C25K (Zen Labs) | Free to download, paid for most workouts (price not confirmed) | 8 weeks | Android and Fitbit watch users |
| Couch to 5K Runner | Free for the first 4 runs, in-app purchases listed from £4.99 to £19.99 | 8 weeks | Apple Watch users |
| Nike Run Club | Free | 4-week and 8-week plans | People who can already run a bit |
| Runna | £15.99 a month or £99.99 a year, 7-day free trial | Plans from 5K upwards | After your first 5K |
| Zombies, Run! 5k Training | Free to download, in-app purchases from £3.99 | 8 weeks | People who get bored easily |
NHS Couch to 5K
You pick a coach, play your own music if you like, and the app times every run and walk. Week 1 is a 1 minute run, then a 1 minute 30 second walk. GOV.UK lists celebrity coaches including Jo Whiley, Steve Cram, Sarah Millican, Denise Lewis and Sanjeev Kohli. After week 9 there are Beyond Couch to 5K runs. You can also follow the plan on the NHS page or as a PDF, with no app at all.
C25K by Zen Labs
The Google Play listing says it's an 8-week plan with an audio coach, and lists Google Wear OS, Samsung and Fitbit smartwatches. It mentions a paid "Zen Unlimited Pass", and recent reviewers say most workouts after the first week need a subscription. I couldn't confirm a price, so I'm not quoting one.
Couch to 5K Runner
The UK App Store listing says it's free to download with the first four runs included, and lists iPhone, iPad and Apple Watch. The rest is paid, with in-app purchases listed from £4.99 to £19.99.
Nike Run Club
Nike says the app is free to download and use. It has a 4-week Get Started plan for beginners and an 8-week 5K plan. These are run plans, not NHS-style walk-run plans: the Get Started plan’s runs range from 5 to 42 minutes. In my view it suits you once you can run a little.
Runna
Runna's UK pricing is £15.99 a month or £99.99 a year. It lists Apple Watch, Garmin, Fitbit and Coros. Its support pages say that since 5 June 2026 the beginner plans are part of the paid subscription. I'd treat Runna as a next step after Couch to 5K, not a first step.
Zombies, Run! 5k Training
An 8-week plan wrapped in an audio story, handy if plain beeps bore you. The UK App Store listing shows it free to download, with in-app purchases including "Unlock All Workouts" at £3.99 and memberships from £6.99.
Free or paid?
In my view, what matters is walk-run intervals, three runs a week, built up slowly. The NHS app gives you that free. Paid apps add things like watch support or extra plans, but they won't run the miles for you. Pay only if a feature gets you out of the door more often.
If you try a paid trial, set a reminder to cancel. Runna says deleting the app doesn't cancel the subscription, and to cancel at least 24 hours before a free trial ends.
Which app suits you?
- Complete beginner on a budget: the NHS app.
- You want it on your wrist: the paid and Android options list watch support (see the questions below). I couldn't find it listed for the NHS app. You don't need a watch: the NHS says its app times everything for you.
- You get bored easily: Zombies, Run! 5k Training, or the NHS app with a different coach.
- You've done Couch to 5K before: Beyond Couch to 5K runs, Nike's guided runs, or Runna for a 10K or race plan.
- You'll use a treadmill: the NHS says that's fine. Use your favourite app as the timer. I've written up how to do Couch to 5K on a treadmill.
- You're over 50: the NHS says the plan is for everyone, so the free NHS app is still the place to start. I've written more in Couch to 5K over 50.
The NHS also says to speak to a GP if you're worried about your health before you start.
When the plan gets hard
Most people wobble somewhere. The NHS says it's totally okay to repeat any run or week. In the NHS plan, week 5 ends with your first 20-minute run, a big step up, so in my view it's a common testing point. I've written more about it in Week 5 of Couch to 5K.
Three things help, whichever app you use:
- Run slower than you think you should. If you can't say a short sentence, ease off.
- Repeat a run or a week without guilt, and keep a rest day between runs, as the NHS says. There's more in Can you repeat a week of Couch to 5K?
- Add two short strength sessions a week. My free Couch to 5K strength plan is nine weeks, no equipment.
What you need besides the app
Not much. The NHS suggests running shoes that support your feet, and a running armband if you've no pocket for your phone. My list is in Couch to 5K kit under £50, so I won't repeat it.
For the darker months, the NHS says to run well-lit routes and wear reflective clothing. If your route has unlit bits, a head torch helps. The one on my kit page is the Ledlenser NEO head torch, and the rest of my kit list is there too.
After week 9
Once you've finished, the NHS suggests a parkrun: a friendly, free weekly event to walk, jog or run 5km, with no time limit. Or build on your running: my running page has a plan with two short strength sessions for people already comfortable with easy runs.
I ran the 52K at Ladybower, and the lesson was the same as week 1: build slowly. I wrote it up in Ladybower 52K Ultra.
Want a bit of help?
The app gets you a long way. Some people just do better with a real person in their corner.
If you’re in or around Heywood and you’d like someone to run with you, sort your pace out and keep you going when week five feels like a mountain, that’s what my beginner running coaching is for. Have a look and drop me a message.
Getting fit again after time off and want a plan to follow on your own? Have a look at my Fit Again in 6 Weeks programme.
Quick questions
Is the NHS Couch to 5K app really free?
Yes. The NHS describes Couch to 5K as a free programme, and the UK App Store listing shows the app as free, with no in-app purchases listed. It's made by the Department of Health and Social Care, with the BBC. Check the store listing before you download, in case anything changes.
What is the best Couch to 5K app for iPhone?
For most beginners, the NHS Couch to 5K app: it's free and on the UK App Store. If you want to run with an Apple Watch, Couch to 5K Runner and Runna both list Apple Watch support, though both cost money. I couldn't find watch support listed for the NHS app, so check first.
Which Couch to 5K app works with a smartwatch?
It depends on your watch. C25K by Zen Labs lists Google Wear OS, Samsung and Fitbit. Runna lists Apple Watch, Garmin, Fitbit and Coros. Couch to 5K Runner lists Apple Watch. You don't need a watch at all, though: the NHS says its app times everything for you.
Is Runna good for Couch to 5K?
In my view, Runna is a better next step than a first step. Its beginner plans are part of the paid subscription from 5 June 2026, at £15.99 a month or £99.99 a year in the UK (checked on 24 October 2026). There's a 7-day free trial, and Runna says to cancel at least 24 hours before it ends.
Can I do Couch to 5K on a treadmill?
Yes. The NHS says that if running outside isn't your thing, you can do your runs on a treadmill instead. Use your chosen app as the timer and follow the same walk and run intervals. Keep the speed comfortable: you should still be able to say a short sentence.
How long does Couch to 5K take?
Nine weeks, or longer. The NHS plan is three runs a week for nine weeks, finishing with 30 minutes of running, and the NHS says it's totally okay to repeat any run or week if you need to. A 10 or 12 week finish is just as good as nine. Stop if something feels wrong, and speak to a GP if you're worried about your health.
Whichever app you pick, you can also print the plan. My free printable Couch to 5K plan and run log puts all nine weeks on one page.
Pick an app, then pick your first run day
The best app is the one you actually open. Pick one, choose your first run day and go slowly.
If you'd like something to go alongside it, grab my free Couch to 5K strength plan. It's nine weeks, two short sessions a week, no equipment.
And my free 7-day kickstart plan has simple meals and three 20 minute home workouts. This is general information, not medical advice, so speak to your GP if you're unsure.
Which app are you thinking of starting with?
Cheers,
James 👍
