Zone 2 vs Base Layer Coaching
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zone 2
This app helps you track your weekly workout time spent in the Zone 2 heart rate range. It provides detailed tracking, connectivity with various heart rate monitors and Strava, and real-time feedback on your progress towards your fitness goals.
- Weekly, monthly, and daily zone tracking
- Strava connectivity
- Home and Lock Screen widgets
- Bluetooth heart rate monitor compatibility
- Apple Watch app with live feedback
- Heart rate zone calculator
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Zone 2 app tracks how much of your weekly workout time is performed in the zone 2 heart rate range, typically between 60-70% of your maximum heart rate. Aiming for 150 minutes or more of weekly exercise in zone 2 is recommended, as it optimizes endurance, enhances fat-burning efficiency, and fosters sustainable fitness gains by maintaining a balance between intensity and recovery. The optimal number of minutes to spend in zone 2 per week can vary based on individual fitness levels. _____________________ If you do not have an Apple Watch, you can connect common Bluetooth heart rate monitors, such as the Polar H10, Garmin chest strap, and new Garmin watches, to view your heart rate zone progress live during a workout. If you have an Apple Watch, use the Apple Watch app to see zones live on your wrist with haptic feedback, Siri announcements, and health metrics. If you already have a different app you like for tracking workouts, no worries; Zone 2 uses all workouts saved to your device with heart rate data to calculate your weekly zone minutes. *** Features Include *** • Weekly, monthly, & daily zone tracking based on your weekly goal with multiple chart viewing options • Strava connectivity to upload Zone 2 created distance workouts to your Strava profile • Home Screen and Lock Screen widgets for weekly Zone 2 goal progress • Compatibility with common Bluetooth heart rate monitors for live zone reporting during workouts with optional audio feedback • Apple Watch app with live zone total calculations, multiple workout screens, and optional haptic feedback and alerts • Apple Watch to iPhone mirroring during live workouts to see heart rate on the larger iPhone screen • Zone goal or open goal modes for tracking workouts • Heart rate zone calculator • Live activities on the Dynamic Island or Lock Screen _____________________ What is zone 2 heart rate training? Zone 2 training refers to exercise performed at a moderate intensity that keeps your heart rate in a specific heart rate zone, typically between 60-70% of your maximum heart rate. This is the heart rate zone where your body is able to utilize oxygen most efficiently, which can lead to a range of benefits for your fitness and health. Zone 2 training is important for a number of reasons, including: • Improved aerobic capacity: By training in the zone 2 heart rate range, your body becomes more efficient at using oxygen to produce energy, which can improve your overall aerobic capacity. • Increased fat burning: During moderate-intensity exercise, your body relies more on fat as a source of fuel, which can help to improve your body composition and reduce body fat. • Improved cardiovascular health: Regular exercise in the zone 2 heart rate range can help to strengthen your heart and improve blood flow, which can reduce the risk of heart disease. • Increased endurance: Training at a moderate intensity can help to improve your endurance and stamina, which can be particularly helpful for endurance athletes such as long-distance runners or cyclists. _______________ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Base Layer Coaching
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Base Layer is a fitness coaching app that builds your training program from real health data — heart rate, HRV, sleep, workout history — and adapts every week. Tell your coach what you're training for. A ski trip, a marathon, keeping up with your kids, or just getting stronger. Connect Apple Health, and Base Layer builds a periodized program that actually responds to how your body is recovering. HOW IT WORKS - Set your goals: Pick your sports, set target events, describe your constraints and schedule. - Connect your data: Base Layer reads Apple Health — heart rate, HRV, sleep, VO2 Max, workout history — so you never have to manually log anything. - Get your program: Your AI coach builds a multi-week roadmap with progressive overload, deload weeks, and event-specific peaking. - Train and adapt: Each week, your coach reviews your real recovery data and adjusts intensity, volume, and focus. Skip a week? Get sick? It recalibrates. WHAT MAKES IT DIFFERENT Your coach actually reads your data. Not just step counts — real training signals. Heart rate variability, resting heart rate trends, sleep quality, workout intensity. The program responds to what your body is telling it. One program, everything you do. Skier who also lifts and runs? Base Layer builds one integrated plan that balances all of it, with the right energy system work at the right time. Real periodization. Not random workouts — a structured progression with base phases, build phases, peak weeks, and recovery. Just like a human coach would design. BUILT FOR - Skiers, climbers, cyclists, runners, swimmers, and triathletes - Team sport athletes — rugby, soccer, basketball, football - Strength athletes — powerlifting, weightlifting, CrossFit - Anyone training for a specific event or season - Parents who want to keep up with their kids - People getting back into fitness after a break FEATURES - AI coaching powered by Claude — adapts weekly based on your recovery - Readiness scoring from real biometric data - Workout library with guided sessions and rest timers - HealthKit integration — automatic workout detection and tagging - Target event countdown with periodized peaking - Coach chat for on-the-fly program adjustments - iCloud and cross-device sync - Apple Watch workout tracking BASE LAYER PRO Subscribe to unlock unlimited AI coaching, full workout generation, and advanced readiness tracking. Free users can explore the app and track basic metrics. - Monthly: $9.99/month - Annual: $49.99/year (save over 50%) Terms of Use: https://baselayer.coach/terms
Screenshots
Verdict
Zone 2 and Base Layer Coaching are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Zone 2 sells 2 in-app purchases, starting at $4.99 per month and Base Layer Coaching sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Zone 2 | Base Layer Coaching |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (241 ratings) — better | — |
| Positive reviews | 74.1% of reviews | — |
| Number of ratings | 241 — better | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 15 MB | 22 MB |
| Age rating | 4+ | 17+ |
| Developer | Shannon Bolick | Dan Estes |
Bugs and requests
Zone 2
Reported bugs
9 issues- App crashes on iPhone 11 Pro and iPhone 16 with latest iOS
- Watch disconnects constantly during workouts
- Tracking stops mid-workout without saving data
- Bluetooth connectivity issues with Polar and other HR monitors
- App freezes at various points during exercise
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- Landscape mode flicks back to portrait automatically
- App continues running in background after closing
- Mirroring to iPhone functionality broken in version 2.7
- Random disconnections from Apple Watch
Requested features
8 requests- Calorie burn tracking and display
- Landscape orientation support for treadmills and rowers
- More specific workout categories beyond provided options
- Music control integration (play, pause, skip)
- Step tracking during workouts
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- Expanded time period views for zone totals
- Voice notifications through headphones instead of watch speakers
- Option to disable Zone 2 goal for live-only tracking
Base Layer Coaching
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Zone 2
- Unlock All - Monthly3 Days trial$4.991 Month
- Unlock All - Yearly7 Days trial$39.991 Year
Base Layer Coaching
- Base Layer Pro$9.991 Month
- Base Layer Pro — Annual$49.991 Year









