Target Zone Keeper vs Strength Balance
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Target Zone Keeper
This app helps improve cardiovascular fitness by guiding users to maintain their heart rate within an optimal zone for VO2 max enhancement. It offers non-disruptive alerts and visual cues, requiring minimal wrist interaction for seamless workout integration.
- Maintains target heart rate zone
- Minimal wrist interaction required
- Simple, intuitive setup
- Customizable, non-disruptive alerts
- Personalized heart rate zones
- Apple Health integration
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Want to improve your endurance and cardiovascular fitness? Boosting your VO2 max - the amount of oxygen your body uses during intense exercise - is the key. Target Zone Keeper helps you achieve this by keeping your heart rate in the optimal zone. With a simple, intuitive interface (no complex setup!), it offers visual cues and haptic feedback to keep you focused without interrupting your flow, even when you’re wearing a gloves or simply can’t turn your wrist! Key features - Keeps you in the target heart rate zone with minimal to none wrist interaction - Simple, intuitive setup for easy use right out of the box - Non-disruptive, customizable alerts - Personalized heart rate zones focused on VO2 max improvement - Seamless integration with Apple Health for workout tracking Benefits - Get instant feedback without disrupting your workout flow - Optimize your training specifically for VO2 max improvement
Strength Balance
This app helps strength athletes identify and correct muscle imbalances by tracking key lifts and analyzing strength ratios. It provides insights to focus training and build proportional strength across all major movement patterns.
- Track major compound lifts
- Automatic strength ratio calculations
- Identify muscle imbalances
- Personal record tracking
- Distraction-free interface
- Private on-device data storage
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Track Your Lifting Ratios - Build balanced strength across all major lifts. Identify weaknesses. Train smarter. FIND YOUR IMBALANCES Track your squat, bench, deadlift, overhead press, and more. StrengthBalance calculates your strength ratios and highlights muscle group imbalances so you know exactly where to focus your training. INTELLIGENT RATIO ANALYSIS See how your lifts compare to proven strength standards. Are you squat-dominant? Weak overhead? The app provides actionable insights based on your personal lifting data. TRACK YOUR PROGRESS Log every max lift and watch your ratios improve over time. All your training data stays private on your device—no cloud syncing, no tracking, just your lifting history. DESIGNED FOR STRENGTH ATHLETES Whether you're a powerlifter, olympic lifter, or general fitness enthusiast, Strength Balance helps you build proportional strength across all movement patterns. KEY FEATURES • Track all major compound lifts • Automatic strength ratio calculations • Identify imbalances • Personal record tracking • Clean, distraction-free interface
Screenshots
Verdict
The clearest difference is in-app purchases: Target Zone Keeper at none against Strength Balance's 1. Strength Balance's advantage is update cadence (every 3 weeks vs every 7 months). On price, rating, ratings volume and ads there is nothing between them.
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. Strength Balance sells 1 one-off in-app purchase. Target Zone Keeper asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Target Zone Keeper against 5.0 for Strength Balance. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
Target Zone Keeper ships an update every 7 months, Strength Balance every 3 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.
| Parameter | Target Zone Keeper | Strength Balance |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 7 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, Apple Watch — better | iPhone |
| Requires iOS | 17.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Margarita Bliznikova | James Panter |
Customer experience
Target Zone Keeper
Strength Balance
In-app purchases
Target Zone Keeper
No in-app purchases
Strength Balance
- Support The Developer$2.99
Questions
Is Target Zone Keeper free?
Is Strength Balance free?
Which has better reviews, Target Zone Keeper or Strength Balance?
Do Target Zone Keeper or Strength Balance have ads?
Which is updated more often, Target Zone Keeper or Strength Balance?
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