# iFour Core vs BICEP BOSS

The clearest difference is ads: iFour Core at none against BICEP BOSS's shown. iFour Core also leads on iOS requirement (11.0 vs 26.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. iFour Core sells 2 in-app purchases, starting at $5.99 per month and BICEP BOSS sells 6 in-app purchases, starting at $21.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for iFour Core against 5.0 for BICEP BOSS. Both are backed by a comparable volume of ratings — 28 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

iFour Core ships an update every 2 months, BICEP BOSS monthly. Both last shipped on November 3, 2026.

## The numbers

| Metric | iFour Core | BICEP BOSS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (28 ratings)](https://appshunter.io/ios/app/ifour-core/id1525317554/reviews) | [5.0 (12 ratings)](https://appshunter.io/ios/app/bicep-boss/id1604834695/reviews) |
| Number of ratings | **28** | 12 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 39 MB | 91 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [ifour.life, LLC](https://appshunter.io/developer/1525317556) | [Kimberly Bergey](https://appshunter.io/developer/1604834697) |

## What reviewers say

### iFour Core

[App page](https://appshunter.io/ios/app/ifour-core/id1525317554)

This app offers a personalized core workout program designed by physical therapists. It adapts to your individual anatomy and fitness level, providing daily workouts under 10 minutes with video demonstrations. Access nutrition guides and trainer support as a member.

**Highlights:** Personalized core workout program, Physical therapy approved exercises, Daily workouts under 10 minutes, Video demonstrations of exercises, Nutrition guides and support, Fitness test for customized plans

**Features:** macOS Compatibility

**In-app purchases (2)**

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


### BICEP BOSS

[App page](https://appshunter.io/ios/app/bicep-boss/id1604834695)

Achieve a strong, muscular physique with daily 15-minute workouts designed for home or gym. This app offers progressive programs for bodyweight training and weightlifting, suitable for all ages and fitness levels. It also includes flexibility and mindfulness exercises to support overall well-being.

**Highlights:** 15-minute progressive workouts, Bodyweight training program, Weight training program, Exercise demos for form, Post-workout stretching routines, Yoga, meditation, and breathwork

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Boss Flexibility Plan | $21.99 | per month |
| Boss Flexibility & Calm | $27.99 | per month |
| BossStrength Membership | $57.99 | per month |
| BossBodyweight | $77.99 | per month |
| Boss Body Membership | $97.99 | per month |
| Boss Weight Training | $117.99 | per month |


## Frequently asked questions

### Is iFour Core free?

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

### Is BICEP BOSS free?

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

### Which has better reviews, iFour Core or BICEP BOSS?

iFour Core and BICEP BOSS are both rated 5.0 out of 5 on the App Store, from 28 and 12 ratings respectively.

### Do iFour Core or BICEP BOSS have ads?

BICEP BOSS shows ads; iFour Core does not.

### Which is updated more often, iFour Core or BICEP BOSS?

iFour Core ships an update every 2 months, and BICEP BOSS monthly. Most recently, iFour Core was updated on November 3, 2026 and BICEP BOSS on November 3, 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.*