# Target Zone Keeper vs Arnold Split

The clearest difference is update cadence: Arnold Split at every 3 weeks against Target Zone Keeper's every 7 months. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Target Zone Keeper against 5.0 for Arnold Split. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Target Zone Keeper ships an update every 7 months, Arnold Split every 3 weeks. The most recent releases landed on September 7, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Target Zone Keeper | Arnold Split |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/target-zone-keeper/id6673919937/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/arnold-split/id6759944710/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 2 MB | 13 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Margarita Bliznikova](https://appshunter.io/developer/1765769948) | [Ziero Financial Inc](https://appshunter.io/developer/1585225782) |

## What reviewers say

### Target Zone Keeper

[App page](https://appshunter.io/ios/app/target-zone-keeper/id6673919937)

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.

**Highlights:** Maintains target heart rate zone, Minimal wrist interaction required, Simple, intuitive setup, Customizable, non-disruptive alerts, Personalized heart rate zones, Apple Health integration

**In-app purchases:** none


### Arnold Split

[App page](https://appshunter.io/ios/app/arnold-split/id6759944710)

Follow the legendary 6-day push/pull/legs program designed by Arnold Schwarzenegger. Track your weights, detect personal records, and monitor your progress with detailed workout history and volume tracking.

**Highlights:** Pre-built Arnold program, Smart weight tracking, Personal record detection, Rest timer with haptics, Progress tracking, Workout history log

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Target Zone Keeper free?

Target Zone Keeper is free to download, with no in-app purchases.

### Is Arnold Split free?

Arnold Split is free to download, with no in-app purchases.

### Which has better reviews, Target Zone Keeper or Arnold Split?

Target Zone Keeper and Arnold Split are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Target Zone Keeper or Arnold Split have ads?

Neither Target Zone Keeper nor Arnold Split shows ads.

### Which is updated more often, Target Zone Keeper or Arnold Split?

Target Zone Keeper ships an update every 7 months, and Arnold Split every 3 weeks. Most recently, Target Zone Keeper was updated on September 7, 2026 and Arnold Split on September 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*