STAS

Comparison

Best Training Apps for Amazfit Watches

Your Amazfit collects the data. But which app turns it into real coaching? We compared Zepp Coach, Intervals.icu, TrainingPeaks, Runna, Strava, and STAS — so you can pick the right tool for your running.

Zepp Coach

built-in

Zepp Coach comes pre-installed on supported Amazfit watches. It offers daily readiness scores, AI-generated training suggestions, and basic periodization (base → build → peak). Good starting point, but limited in depth.

  • ✓Built into the watch — no extra setup
  • ✓Daily readiness score and recovery advice
  • ✓Basic AI training plans with periodization
  • ×Doesn't use your actual training history for personalization
  • ×Limited analytics — no CTL/ATL/TSB, no zone analysis
  • ×Not available on all Amazfit models

Free basic / ~€20/year for advanced AI plans

Intervals.icu

free

The most powerful free training platform available. Intervals.icu gives you professional-level analytics that platforms like TrainingPeaks charge $120/year for. Direct Amazfit integration through Zepp.

  • ✓Completely free — no limits, no trial period
  • ✓Deep analytics: CTL/ATL/TSB, HR zones, power curves
  • ✓Workout planning with push to T-Rex 3 Pro and Balance 2
  • ✓Wellness tracking: HRV, sleep, resting HR trends
  • ×Steeper learning curve — many features to discover
  • ×No built-in coaching — it's an analytics platform, not a coach

Completely free

How to connect Amazfit to Intervals.icu →

TrainingPeaks

paid

The industry standard for coached athletes. TrainingPeaks excels at structured workouts and coach-athlete workflows. Premium features come at a price, but it's what most professional coaches use.

  • ✓Structured workouts sync to watch (via Amazfit Active 3 Premium)
  • ✓Coach marketplace — find a human coach easily
  • ✓Industry standard for triathlon and running coaching
  • ×Premium is expensive: ~$120/year for full analytics
  • ×Amazfit integration is less direct than with Intervals.icu

Free basic / ~$120/year Premium

Runna

paid

A subscription-based app that provides ready-made running plans for specific goals (5K, 10K, half marathon, marathon). Plans sync to your watch, but they're template-based — not personalized to your current fitness.

  • ✓Ready-made plans for every race distance
  • ✓Workout sync to Amazfit (Active 3 Premium and newer)
  • ×Template plans — doesn't adapt to your daily condition
  • ×Subscription required for full features

~$15/month or ~$100/year

Strava

freemium

The world's biggest fitness social network. Great for motivation and community, but limited as a training tool. Basic analytics in free tier, better route planning and analysis in Premium.

  • ✓Huge community — social motivation
  • ✓Segment leaderboards and route discovery
  • ×Not a coaching platform — no training load tracking
  • ×Limited analytics without Premium subscription

Free basic / ~$80/year Premium

STAS + ChatGPT

free

A different approach: STAS connects your Intervals.icu data to ChatGPT. Instead of a closed app with pre-built features, you get a conversation with an AI that sees all your training data — paces, HR, recovery, goals — and coaches you through natural language.

  • ✓ChatGPT sees your full training history and metrics
  • ✓Truly personalized — adapts to your condition daily
  • ✓Writes structured plans directly to your Intervals.icu calendar
  • ✓Free to connect (requires ChatGPT subscription for GPT use)
  • ×Requires Intervals.icu connection first
  • ×Needs ChatGPT Plus/Pro for best experience

Free connection / ChatGPT subscription separate

Try STAS — connect your data to ChatGPT

Side-by-side comparison

AppPricePersonalizationAnalyticsPlanningWatch sync
Zepp CoachFree / €20/yrBasicBasicAI plansBuilt-in
Intervals.icuFreeManualDeepFullPush (2 models)
TrainingPeaks$120/yrCoach-drivenDeepFullLimited
Runna$100/yrTemplateBasicPre-builtYes (newer)
StravaFree / $80/yrNoneBasicNoneAuto-sync
STAS + ChatGPTFree*AI-drivenVia IntervalsAI + calendarVia Intervals

Frequently asked questions

Is Zepp Coach free?

Basic Zepp Coach is free — daily readiness and simple recommendations. Advanced AI-generated training plans cost about €20/year. Available on Cheetah Pro, Balance 2, and some newer models.

What's the best free training app for Amazfit?

Intervals.icu. It's completely free with no limits — deep analytics (CTL/ATL/TSB), heart rate zone tracking, workout planning, and workout push to supported Amazfit models. Nothing else comes close at this price (free).

Can Amazfit work with TrainingPeaks?

Yes. Amazfit Active 3 Premium has direct TrainingPeaks integration. Other models can sync through Intervals.icu or third-party apps. TrainingPeaks Premium costs about $120/year.

What's the difference between Zepp Coach and a real AI coach?

Zepp Coach uses generic models and doesn't analyze your full training history. STAS + ChatGPT sees all your data — every workout, pace, heart rate, sleep, recovery — and personalizes recommendations based on your actual condition, not population averages.

Can ChatGPT be my running coach?

Yes, with STAS. STAS connects your Intervals.icu data to ChatGPT, so it sees your real training data. It can analyze workouts, track your fitness trends, create periodized plans, and write structured workouts to your calendar. Available 24/7.

Do I need to pay for Intervals.icu?

No. Intervals.icu is completely free — no trial, no subscription, no feature limits. It's built by one developer (David Tinker) and supported by donations. You get analytics that competitors charge $100+/year for.

Related guides

How to connect Amazfit to Intervals.icu — step-by-step guide

How to set up Amazfit for serious running training

Can AI be your running coach? How ChatGPT + data changes training

Ready to upgrade your Amazfit training?

Start with Intervals.icu (free analytics), then add STAS to turn ChatGPT into your personal coach.

Get started with STAS

Free to connect — no subscription needed

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