Frequently Asked Questions
How long does it take to train for a 5K from scratch?
Most beginners can get race-ready for a 5K in 6 to 8 weeks with a structured walk-run program. Improvio builds a personalized schedule based on your current fitness so you progress safely.
What is Zone 2 running?
Zone 2 is a low-intensity heart-rate zone (roughly 60–70% of your max heart rate) where your body primarily burns fat for fuel. Training in Zone 2 builds aerobic endurance, improves recovery, and reduces injury risk — it is the foundation of most effective running plans. Improvio structures the majority of your easy runs in Zone 2.
What is the difference between Improvio and Couch to 5K?
Couch to 5K (C25K) is a fixed 9-week program that is the same for everyone. Improvio creates a personalized plan based on your fitness level, pace, available training days, and race date. If you miss a session, Improvio adapts — C25K does not.
Is there a one-time payment running app?
Yes — Improvio costs €14.99 once. There is no subscription, no monthly fee, and no in-app purchases. You pay once and keep your plan forever.
How many days a week should a beginner run?
Most beginners should run 3 days per week with rest days in between. Improvio lets you choose your available days and builds a schedule around your life.
Does Improvio work on iPhone and Android?
Improvio is a web app that works in any modern browser — no app store download required. You can add it to your home screen for quick access.
Can I train for a half marathon with 3 days a week?
Yes — with the right plan, 3 quality sessions per week can prepare you for a half marathon. Improvio structures your long runs, tempo work, and recovery to maximize every session.
How is Improvio different from Runna?
Runna charges £19.99 per month as a subscription. Improvio is a one-time payment of €14.99 with no recurring fees. Both offer personalized plans, but Improvio is purpose-built for beginners who want structure without complexity or ongoing costs.