# Plank King vs Plank Timer | Dr. Simplicity

The clearest difference is in-app purchases: Plank Timer | Dr. Simplicity at none against Plank King's 3. Plank Timer | Dr. Simplicity also leads on update cadence (every 5 days vs every 2 months) and iOS requirement (15.3 vs 17.0). Plank King's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Plank King sells 3 in-app purchases, starting at $2.99 per month. Plank Timer | Dr. Simplicity asks for nothing beyond the download.

Plank King ships an update every 2 months, Plank Timer | Dr. Simplicity every 5 days. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Plank King | Plank Timer | Dr. Simplicity |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 9 MB |
| Requires iOS | 17.0 | **15.3** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [源 陈](https://appshunter.io/developer/1217365131) | [Saihou Ieong](https://appshunter.io/developer/1676200405) |

## What reviewers say

### 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's designed for everyday use and habit tracking.

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

**Features:** macOS Compatibility

**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 |


### Plank Timer | Dr. Simplicity

[App page](https://appshunter.io/ios/app/plank-timer-dr-simplicity/id6566170165)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Plank King free?

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

### Is Plank Timer | Dr. Simplicity free?

Plank Timer | Dr. Simplicity is free to download, with no in-app purchases.

### Do Plank King or Plank Timer | Dr. Simplicity have ads?

Plank Timer | Dr. Simplicity shows ads; Plank King does not.

### Which is updated more often, Plank King or Plank Timer | Dr. Simplicity?

Plank King ships an update every 2 months, and Plank Timer | Dr. Simplicity every 5 days. Most recently, Plank King was updated on October 9, 2026 and Plank Timer | Dr. Simplicity on October 4, 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.*