# Plank Workout 30 day challenge vs Plank Timer | Dr. Simplicity

The clearest difference is in-app purchases: Plank Timer | Dr. Simplicity at none against Plank Workout 30 day challenge's 2. Plank Timer | Dr. Simplicity also leads on update cadence (every 5 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Plank Workout 30 day challenge sells 2 in-app purchases, starting at $2.49 per month. Plank Timer | Dr. Simplicity asks for nothing beyond the download.

Plank Workout 30 day challenge ships an update every 6 weeks, Plank Timer | Dr. Simplicity every 5 days. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Plank Workout 30 day challenge | Plank Timer | Dr. Simplicity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.5K ratings)](https://appshunter.io/ios/app/plank-workout-30-day-challenge/id1508392850/reviews)** | — |
| Number of ratings | **1.5K** | — |
| Positive reviews | 47.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 9 MB |
| Requires iOS | **15.0** | 15.3 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roman Sorochak](https://appshunter.io/developer/1097351227) | [Saihou Ieong](https://appshunter.io/developer/1676200405) |

## What reviewers say

### Plank Workout 30 day challenge

[App page](https://appshunter.io/ios/app/plank-workout-30-day-challenge/id1508392850)

This app guides you through a 30-day plank challenge, starting with short durations and progressively increasing your hold time. It offers a custom timer for personalized workouts and tracks your training history. A voice assistant provides guidance during your sessions.

**Highlights:** 30-day plank challenge plan, Customizable plank timer, Personalized training rhythm, Workout history tracking, Voice assistant guidance

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plank Premium monthly | $2.49 | per month |
| Plank Premium yearly | $12.49 | per year |

**What reviewers like**

- 👍 Great app
- 💡 Excellent for plank training
- 👍 Simple and practical
- 👍 Keeps user accountable
- 👍 Beginner friendly

**What reviewers complain about**

- 🐛 Ads won't close
- 🐛 Ads block progress
- 🐛 Timing issues
- 🐛 App closes/locks out
- 🐛 Voice prompt doesn't work

**Reported bugs**

- Ads won't close to allow completing the day
- Phone screen locks during exercise, stopping the timer
- Timer not matching the voice prompt
- Time intervals increasing too quickly
- App not registering completed exercises

**Requested features**

- Option to disable ads
- Ability to customize timer for challenge
- Ability to track progress and see future goals
- Sync with friends to see each other's progress
- Scalable for different age groups


### 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 Workout 30 day challenge free?

Plank Workout 30 day challenge 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 Workout 30 day challenge or Plank Timer | Dr. Simplicity have ads?

Both Plank Workout 30 day challenge and Plank Timer | Dr. Simplicity show ads.

### Which is updated more often, Plank Workout 30 day challenge or Plank Timer | Dr. Simplicity?

Plank Workout 30 day challenge ships an update every 6 weeks, and Plank Timer | Dr. Simplicity every 5 days. Most recently, Plank Workout 30 day challenge was updated on October 15, 2026 and Plank Timer | Dr. Simplicity on October 12, 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.*