Best Zone 2 By Prime Factors Apps

248+ iOS apps curated and reviewed

3.9 avg rating
20 free apps
Updated November 2026

From beginner-friendly picks to power-user tools, our zone 2 by prime factors list covers 248+ iPhone apps updated through November 2026. Compare ratings, prices, and screenshots in one place.

Compare top Zone 2 By Prime Factors Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Zone 2 by Prime FactorsZone 2 by Prime FactorsFreeβ€”NoNoMay 2026
2Zone 2: Heart Rate TrainingZone 2: Heart Rate TrainingFree4.6β˜… (244)NoYesNov 2026
3Zone2 β€” Heart Rate ZonesZone2 β€” Heart Rate ZonesFreeβ€”NoNoJun 2026
4Zones for TrainingZones for TrainingFree4.8β˜… (19K)NoYesNov 2026
5Zone2 FitnessZone2 FitnessFree3.7β˜… (3)NoYesOct 2026
6Zone 2 Buddy: Heart Rate CoachZone 2 Buddy: Heart Rate CoachFreeβ€”NoNoNov 2026
7Heart Rate Monitor: Pulse ZoneHeart Rate Monitor: Pulse ZoneFreeβ€”YesYesSep 2026
8Zone 2 Training CoachZone 2 Training CoachFree5.0β˜… (1)NoYesNov 2026

Top Picks for Zone 2 By Prime Factors

Zone 2: Heart Rate Training#2

Zone 2: Heart Rate Training by Shannon Bolick

VO2 Max, Cardio & HR Zones
4.6😊(244 ratings)
FreeIn-App Purchases
Zone 2: Heart Rate Training screenshot 1
Zone 2: Heart Rate Training screenshot 2
Zone 2: Heart Rate Training screenshot 3
Zone 2: Heart Rate Training screenshot 4
Zone 2: Heart Rate Training screenshot 5
Zone 2: Heart Rate Training screenshot 6

This app tracks your weekly workout time spent in Zone 2 heart rate, optimizing endurance and fat-burning. It connects with various Bluetooth heart rate monitors and Apple Watch for live feedback and integrates with existing workout data.

What We Love

  • πŸ‘ Simple and intuitive user interface
  • ⏱️ Accurate real-time zone tracking during workouts
  • πŸ“Š Comprehensive cumulative time tracking by zone
  • 🎯 Customizable heart rate zones and weekly goals
  • πŸ”— Seamless integration with Apple Health and HR monitors
  • πŸ“± Large, easy-to-read display
  • 🎧 Audio alerts for zone changes
  • ⌚ Works effectively with Apple Watch
  • πŸš€ Responsive developer with quick feature implementation
  • πŸ’¬ Excellent customer support from developer Shannon
  • 🎨 Polished and elegant design
  • πŸ”„ Background app functionality

Room to Improve

  • πŸ› Frequent Bluetooth disconnections from HR monitors
  • πŸ› App crashes and freezes mid-workout
  • πŸ› Tracking stops randomly during workouts
  • πŸ“΅ Portrait-only orientation (doesn't support landscape properly)
  • πŸ’³ Pricing confusion and unexpected charges
  • πŸ”” Excessive review prompts during workouts
  • ⚠️ Compatibility issues with some iPhone models
  • πŸ“Š Zone calculation based on HRR instead of max HR percentage
  • 🎯 Mandatory Zone 2 goal that can't be disabled
  • ❌ Requires Apple Fitness subscription (according to one user)

More Zone 2 By Prime Factors apps to explore

FAQ about Zone 2 By Prime Factors

Are there free zone 2 by prime factors apps for iPhone?
Yes β€” 20 of the top zone 2 by prime factors apps we rank are free to download, including Zone 2 by Prime Factors and Zone 2: Heart Rate Training.
Zone 2 by Prime Factors has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 248+ zone 2 by prime factors apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.