# Boot Camp Challenge vs ZenActivity

The clearest difference is rating: ZenActivity at 4.5 against Boot Camp Challenge's 3.9. ZenActivity also leads on ratings volume (58 vs 7). Boot Camp Challenge's advantage is update cadence (every 2 months vs every 13 months) and chart position (#84 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.

Boot Camp Challenge costs $3.99 and ZenActivity $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ZenActivity holds the better App Store score, 4.5 against 3.9. That said, the two scores are not equally well evidenced: ZenActivity has 58 ratings behind it against 7, so its average is the more settled of the two. Written reviews complicate that: 77% of Boot Camp Challenge's written reviews are positive against 65% of ZenActivity's, so the app with the better star average is not the one people write more warmly about.

Boot Camp Challenge ships an update every 2 months, ZenActivity every 13 months. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Boot Camp Challenge | ZenActivity |
| --- | --- | --- |
| Price | $3.99 | $3.99 |
| Rating | [3.9 (7 ratings)](https://appshunter.io/ios/app/boot-camp-challenge/id462087518/reviews) | **[4.5 (58 ratings)](https://appshunter.io/ios/app/zenactivity/id558152100/reviews)** |
| Number of ratings | 7 | **58** |
| Positive reviews | **76.5% of reviews** | 65.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 13 months |
| Monetization | Free | Free |
| Best chart rank | **#84** | — |
| Size | 116 MB | 13 MB |
| Requires iOS | **7.1** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [lolo](https://appshunter.io/developer/383811733) | [Gary Saggu](https://appshunter.io/developer/465733546) |

## What reviewers say

### Boot Camp Challenge

[App page](https://appshunter.io/ios/app/boot-camp-challenge/id462087518)

**Currently charting:** #84 Top Paid · Health & Fitness (US App Store)

This app offers a progressive 18-day fitness program guided by a veteran U.S. Army trainer. It features over 200 exercises with video demonstrations, catering to all fitness levels. Workouts combine cardio, stretching, and muscular endurance for efficient results.

**Highlights:** 18-day progressive program, Expert U.S. Army trainer guidance, 200+ exercises with video, Beginner to advanced levels, Beat-sync music technology, Interactive workout customization, Health app syncing

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 💪 Effective workouts with visible results
- 🎵 Music beat synchronization feature
- ⚙️ Highly customizable intensity and exercises
- 🏠 Convenient home workout solution
- 📱 User-friendly interface and easy to use

**What reviewers complain about**

- 🐛 Frequent app crashes and freezing
- 🔐 Login/access issues after updates
- 🎤 Trainer counting speed mismatches video
- 📺 iPhone screen too small, no iPad support
- 🔊 Audio issues with music and voice overlap

**Reported bugs**

- App crashes during workouts
- Login page inaccessible after updates
- Doesn't resume from where user left off
- Music playlist resets on app restart
- Trainer voice overlaps with music

**Requested features**

- iPad and HD version support
- Extended program beyond 18-30 days
- More cardiovascular exercises
- Additional equipment options (kettlebells, exercise balls)
- Countdown timer for each move


### ZenActivity

[App page](https://appshunter.io/ios/app/zenactivity/id558152100)

Create and save custom interval timers for workouts, yoga, and meditation. This app offers extensive customization for exercise and rest periods, allowing you to build up to five unique routines with unlimited steps. Enjoy background operation and music integration for a seamless practice.

**Highlights:** Save up to 5 workout routines, Unlimited customizable steps per routine, Second-level interval customization, Background operation with music support, ZEN-mode for distraction-free timing, Airplay support for Apple TV

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

**In-app purchases:** none


## Frequently asked questions

### Is Boot Camp Challenge free?

Boot Camp Challenge costs $3.99, with no in-app purchases.

### Is ZenActivity free?

ZenActivity costs $3.99, with no in-app purchases.

### Which has better reviews, Boot Camp Challenge or ZenActivity?

ZenActivity is rated higher. Boot Camp Challenge averages 3.9 out of 5 from 7 ratings, while ZenActivity averages 4.5 from 58 ratings.

### Do Boot Camp Challenge or ZenActivity have ads?

Neither Boot Camp Challenge nor ZenActivity shows ads.

### Which is updated more often, Boot Camp Challenge or ZenActivity?

Boot Camp Challenge ships an update every 2 months, and ZenActivity every 13 months. Most recently, Boot Camp Challenge was updated on October 13, 2026 and ZenActivity on October 7, 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.*