# Plank Workout Challenge vs Plank King

The clearest difference is review sentiment: Plank Workout Challenge at 100% against Plank King's 50%. Plank Workout Challenge also leads on iOS requirement (12.0 vs 17.0). Plank King's advantage is ads (none vs shown). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Plank Workout Challenge sells 4 in-app purchases, starting at $3.99 per 7 days and Plank King sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Plank Workout Challenge ships an update every 5 months, Plank King every 3 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Plank Workout Challenge | Plank King |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (129 ratings)](https://appshunter.io/ios/app/plank-workout-challenge/id1536575452/reviews)** | — |
| Number of ratings | **129** | — |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 120 MB | 36 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [ohealth apps studio](https://appshunter.io/developer/1536575454) | [源 陈](https://appshunter.io/developer/1217365131) |

## What reviewers say

### Plank Workout Challenge

[App page](https://appshunter.io/ios/app/plank-workout-challenge/id1536575452)

This app offers a 30-day challenge with various plank exercises to strengthen your core, tone your abs, and improve posture. It caters to beginners and advanced users with adjustable holding times and exercise variations for effective home workouts.

**Highlights:** 30-day plank exercise program, Static and dynamic plank variations, Core and abs toning, Posture improvement, Beginner to advanced levels, Calorie burning

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $3.99 | per 7 days |
| Premium Features | $9.99 | per month |
| Premium Features | $29.99 | per year |
| Premium Workout | $4.99 | one-time |


### Plank King

[App page](https://appshunter.io/ios/app/plank-king-abs-workout-log/id1551261027)

This app helps you build a consistent core-training habit with a focused plank timer and progressive 30-day plans. Track your progress, view trends, and stay motivated with streaks and achievements. It syncs with Apple Health and offers reminders for daily workouts.

**Highlights:** One-tap plank timer, 30-day progressive plans, Workout history and trends, Daily habit reminders, Apple Health sync, Streaks and leaderboards

**Features:** macOS Compatibility, Apple Watch app, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Six-Month Subscription | $14.99 | per 6 months |
| Premium Plus Bundle | $24.99 | per year |


## Frequently asked questions

### Is Plank Workout Challenge free?

Plank Workout Challenge is free to download, with in-app purchases available.

### Is Plank King free?

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

### Do Plank Workout Challenge or Plank King have ads?

Plank Workout Challenge shows ads; Plank King does not.

### Which is updated more often, Plank Workout Challenge or Plank King?

Plank Workout Challenge ships an update every 5 months, and Plank King every 3 months. Most recently, Plank Workout Challenge was updated on October 27, 2026 and Plank King on October 30, 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.*