# Orange Zones Workout Tracker vs Slab

The clearest difference is review sentiment: Slab at 100% against Orange Zones Workout Tracker's 60%. Slab also leads on rating (5.0 vs 4.4) and update cadence (every 4 days vs every 9 days). Orange Zones Workout Tracker's advantage is monetization model (free with in-app purchases vs subscription) and ratings volume (1.1K vs 2). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Orange Zones Workout Tracker sells 5 in-app purchases, starting at $9.99 per month and Slab sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Slab holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Orange Zones Workout Tracker has 1.1K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 60% of Orange Zones Workout Tracker's written reviews are positive against 100% of Slab's.

Orange Zones Workout Tracker ships an update every 9 days, Slab every 4 days. The most recent releases landed on October 26, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Orange Zones Workout Tracker | Slab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (1.1K ratings)](https://appshunter.io/ios/app/orange-zones-workout-tracker/id1482990976/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/slab-protein-tracker/id6807515971/reviews)** |
| Number of ratings | **1.1K** | 2 |
| Positive reviews | 60.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 84 MB | 8 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Bred Ventures Inc](https://appshunter.io/developer/897222461) | [One Step Forward Ventures](https://appshunter.io/developer/1895082047) |

## What reviewers say

### Orange Zones Workout Tracker

[App page](https://appshunter.io/ios/app/orange-zones-workout-tracker/id1482990976)

This app uses your heart rate to personalize workouts, optimizing calorie burn and performance. Earn points for effort in high-intensity zones and track your progress in real-time with connected devices.

**Highlights:** Personalized heart rate zones, Real-time heart rate monitoring, Points system for workout effort, Apple Watch and Bluetooth HR monitor support, Workout history and summaries, Visual heart rate zone mapping

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $19.99 | per year |
| Friends & Family Yearly | $39.99 | per year |
| Upgrade to annual plan | $59.99 | per year |
| Pro Yearly | $89.99 | per year |

**What reviewers like**

- 🚀 Seamless integration with Apple Watch
- 👍 Accurate heart rate tracking
- 🧡 Matches OTF color zones
- 💰 Cost-effective alternative to OTF monitors
- 🔋 Works well without additional hardware

**What reviewers complain about**

- 💰 Subscription model too expensive
- 🐛 Connectivity issues with Apple Watch
- 🔍 Limited data/history tracking
- 🧭 Lacks live data on phone app
- 🔢 Inaccurate calorie/zone calculations

**Reported bugs**

- Frequent app crashes
- Inconsistent heart rate detection
- Sync issues between watch and phone

**Requested features**

- Weekly/monthly workout tracking
- Customizable display options
- Ability to pause workouts
- Integration with Apple Health
- Social/leaderboard features


### Slab

[App page](https://appshunter.io/ios/app/slab-protein-tracker/id6807515971)

This app focuses solely on tracking your daily protein intake, displaying it as a single, prominent number. It simplifies logging with quick-tap options for frequently eaten foods and offers barcode scanning for packaged items. The app emphasizes consistency by tracking streaks of hitting your protein target.

**Highlights:** Protein-only tracking, Visualized daily progress blocks, One-tap food logging, Barcode scanning, Custom food saving, Streak tracking for consistency

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Yearly | $29.99 | per year |


## Frequently asked questions

### Is Orange Zones Workout Tracker free?

Orange Zones Workout Tracker is free to download, with in-app purchases available.

### Is Slab free?

Slab is free to download, with in-app purchases available.

### Which has better reviews, Orange Zones Workout Tracker or Slab?

Slab is rated higher. Orange Zones Workout Tracker averages 4.4 out of 5 from 1.1K ratings, while Slab averages 5.0 from 2 ratings.

### Do Orange Zones Workout Tracker or Slab have ads?

Neither Orange Zones Workout Tracker nor Slab shows ads.

### Which is updated more often, Orange Zones Workout Tracker or Slab?

Orange Zones Workout Tracker ships an update every 9 days, and Slab every 4 days. Most recently, Orange Zones Workout Tracker was updated on October 26, 2026 and Slab on October 20, 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.*