# 30 day vs Plankstar

The clearest difference is review sentiment: 30 day at 75% against Plankstar's 29%. 30 day also leads on rating (4.7 vs 3.5) and update cadence (every 9 days vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 30 day sells 1 one-off in-app purchase and Plankstar sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

30 day holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: 30 day has 155 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 75% of 30 day's written reviews are positive against 29% of Plankstar's.

30 day ships an update every 9 days, Plankstar every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | 30 day | Plankstar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (155 ratings)](https://appshunter.io/ios/app/30-day-plank-challenges/id1532055684/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/plankstar-plank-workout-timer/id1607941164/reviews) |
| Number of ratings | **155** | 2 |
| Positive reviews | **75.0% of reviews** | 28.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 110 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Bustgrow Ltd](https://appshunter.io/developer/1729557461) | [Youngwan Choi](https://appshunter.io/developer/468424676) |

## What reviewers say

### 30 day

[App page](https://appshunter.io/ios/app/30-day-plank-challenges/id1532055684)

This app offers a structured approach to plank exercises for at-home training. It focuses on core strength, weight loss, and improved posture through progressive challenges. Users can customize plans, track progress, and receive guidance for various fitness levels.

**Highlights:** Core muscle development, Back and spinal health support, Boosted metabolism, Improved posture, Static and dynamic plank options, Customizable exercise plans, Progress tracking with timer

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version | $0.99 | one-time |

**What reviewers like**

- 👍 Great for beginners
- 👍 Free and simple
- 👍 Motivating and effective
- 👍 Easy to use interface
- 👍 Good for stress relief

**What reviewers complain about**

- 🐛 Slow loading times
- 🐛 App crashes or doesn't open
- 🐛 Single workout per day
- 🐛 Unrealistic progression on advanced levels
- 🐛 Timer error on advanced level

**Reported bugs**

- Timer error on advanced level (22nd day)
- App doesn't load or opens very slowly
- App crashes on launch after update
- App stops loading after first day

**Requested features**

- Add widgets
- Add reminders and notifications
- Review plank technique
- View past days' seconds
- Develop higher levels and new sports


### Plankstar

[App page](https://appshunter.io/ios/app/plankstar-plank-workout-timer/id1607941164)

This app helps you track and improve your plank workouts with various timer modes, voice guidance, and detailed statistics. It automatically records your progress and allows you to share achievements. Unlock premium features and remove ads with an in-app purchase.

**Highlights:** Plank timer with goal, max time, and set modes, Voice guidance and sound effects, Automatic workout recording, Workout calendar and statistics, Customizable challenges, Apple Health integration, Social sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $0.99 | per month |
| Annual Premium | $3.99 | per year |
| Lifetime Premium | $19.99 | one-time |


## Frequently asked questions

### Is 30 day free?

30 day is free to download, with in-app purchases available.

### Is Plankstar free?

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

### Which has better reviews, 30 day or Plankstar?

30 day is rated higher. 30 day averages 4.7 out of 5 from 155 ratings, while Plankstar averages 3.5 from 2 ratings.

### Do 30 day or Plankstar have ads?

Both 30 day and Plankstar show ads.

### Which is updated more often, 30 day or Plankstar?

30 day ships an update every 9 days, and Plankstar every 3 months. Most recently, 30 day was updated on October 24, 2026 and Plankstar on October 24, 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.*