TOP 10 Best Fitness Apps for Smartphones (2025)

Looking for the best fitness app for workouts or activity tracking on iPhone or Android? Below is an updated 2025 ranking with short “for whom” summaries, key features, and monetization models. The selection is based on current app capabilities, notable 2024–2025 updates, and user popularity.

1) Strava — for running, cycling, and route mapping

• Why it’s in the top: one of the largest athlete communities; deep analytics of runs/rides, segments, and challenges. New AI routes and an updated workout recording interface. 
• Model: free + subscription (Strava Premium).
• Best for: runners, cyclists, progress trackers, and fans of social motivation.

2) Apple Fitness+ — studio-style workouts in the Apple ecosystem

• Why it’s in the top: weekly library updates, personalized Custom Plans, new formats (yoga, strength, meditation, even pickleball), integration with Apple Watch, and shared activities with Strava.
• Model: subscription.
• Best for: iPhone/Apple Watch owners who want a “gym with a coach” at home.

3) MyFitnessPal — calorie and nutrient tracking

• Why it’s in the top: huge food database, barcode scanner, meal planning, and calorie goals.
• Model: free + Premium.
• Best for: those tracking weight, macros, and calorie deficit/surplus.

4) Nike Training Club — free programs from trainers

• Why it’s in the top: hundreds of free workouts from Nike trainers, plans for all levels and equipment types. Regularly appears in independent “best fitness app” rankings.
• Model: free (with extra content).
• Best for: beginners and those who want variety without complex setup.

5) adidas Running (Runtastic) — detailed running tracker

• Why it’s in the top: precise GPS analytics, training plans, and adidas community support.
• Model: free + Premium.
• Best for: new and experienced runners who want an “all-in-one” running app.

6) Freeletics — intense HIIT workouts with no equipment

• Why it’s in the top: adaptive “Coach” that adjusts to your fitness level, short but challenging routines. Frequently listed among the best apps of the year.
• Model: subscription.
• Best for: those training at home who love challenges.

7) Peloton — premium classes and live workouts

• Why it’s in the top: top-tier instructors, live/on-demand classes (from treadmill runs to yoga), real-time metrics.
• Model: subscription (works without a Peloton bike).
• Best for: those who enjoy “studio” workouts and real-time competition.

8) Fitbit — health + activity in daily routine

• Why it’s in the top: readiness score, sleep, stress, heart rate/SpO₂ tracking (with compatible devices).
• Model: free + Fitbit Premium.
• Best for: Fitbit device owners and users focused on recovery.

9) Samsung Health — basic smartphone tracking

• Why it’s in the top: steps, sleep, heart rate (with compatible watches), weight management, and integrations with other services.
• Model: free.
• Best for: Android/One UI users who want a free “health hub.”

10) FitOn — free video workouts with celebrity trainers

• Why it’s in the top: huge library of free classes (strength, cardio, pilates, stretching), social challenges. Featured in recent reviews among the best “free workout apps.”
• Model: free + PRO.
• Best for: those who want maximum free content and motivation.

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Editor’s tip: if you’re just starting out, try the free Nike Training Club or FitOn; for running — Strava; if you have an Apple Watch — give Apple Fitness+ with personalized plans a try.

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Important about ecosystems and compatibility (Android/iOS)

• Android: in 2024–2026, Google is migrating partners from Google Fit API to Health Connect — this affects integrations between apps and devices (developers are transitioning to ensure everything runs smoothly). Users should update their apps and grant permissions in Health Connect. Google for Developers
• iOS: the Apple Health/Apple Watch ecosystem is deeply integrated with Apple Fitness+, Strava, and others — ensuring accurate metrics, data sync, and seamless activity sharing. Apple

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How to choose your fitness app

1. Goal: weight loss/muscle gain/endurance/sleep and recovery.
2. Format: video classes vs. tracking and analytics.
3. Equipment: machines, dumbbells, or “bodyweight only.”
4. Platform: iOS/Android, compatibility with a watch/tracker.
5. Budget: free, PRO, or subscription with a trial period.

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FAQ (Questions & Answers)

What is the best fitness app in 2025?
For running/cycling — Strava; for home studio workouts — Apple Fitness+ or Peloton; for nutrition — MyFitnessPal; for free workouts — Nike Training Club or FitOn.

Do you need a smartwatch?
No. Most apps work perfectly fine with just a smartphone; Strava has greatly improved its phone-only tracking experience. 

Updated as of October 24, 2025, with the latest announcements and ecosystem changes.