# Interval Timer vs Plankstar

The clearest difference is rating: Interval Timer at 4.5 against Plankstar's 3.5. Interval Timer also leads on review sentiment (69% vs 29%) 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. Interval Timer sells 6 in-app purchases, starting at $0.99 per month 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.

Interval Timer holds the better App Store score, 4.5 against 3.5. That said, the two scores are not equally well evidenced: Interval Timer has 19K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 69% of Interval Timer's written reviews are positive against 29% of Plankstar's.

Interval Timer ships an update every 9 days, Plankstar every 3 months. The most recent releases landed on September 24, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Interval Timer | Plankstar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (19K ratings)](https://appshunter.io/ios/app/interval-timer-tabata-timer/id406473568/reviews)** | [3.5 (2 ratings)](https://appshunter.io/ios/app/plankstar-plank-workout-timer/id1607941164/reviews) |
| Number of ratings | **19K** | 2 |
| Positive reviews | **69.0% 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 | 143 MB | 107 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NEO PIXEL LABS PTE. LTD.](https://appshunter.io/developer/1788472183) | [Youngwan Choi](https://appshunter.io/developer/468424676) |

## What reviewers say

### Interval Timer

[App page](https://appshunter.io/ios/app/interval-timer-tabata-timer/id406473568)

This app helps you manage workout intervals with customizable work and rest periods. It runs in the background and allows music playback, with options to save settings and share progress. Integrates with Apple Health for heart rate monitoring.

**Highlights:** Customizable sets, intervals, and rest times, Runs in background and with screen locked, Music playlist integration, Save settings as templates, Apple Health integration for heart rate, Post workouts to social media

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus - 1 Month | $0.99 | per month |
| Premium - 1 Month | $1.99 | per month |
| Plus - 1 Month | $1.99 | per month |
| Premium - 1 Month | $2.99 | per month |
| Plus - 1 Year | $4.99 | per year |
| Premium - 1 Year | $9.99 | per year |

**What reviewers like**

- 🚀 Free version works well
- 👍 Customizable intervals and timers
- 👍 Flexible for different workouts
- 👍 Easy to use and set up
- 👍 Provides visual and audio cues

**What reviewers complain about**

- 🐛 Timer issues (stops, loses time)
- 🔋 Drains battery when used
- 💰 Expensive subscription model
- 📢 Intrusive ads
- 🔒 Incompatible with other apps

**Reported bugs**

- Ads block functionality
- App freezes or crashes
- Timer doesn't work in background

**Requested features**

- Add notes to workouts
- Provide workout history and analytics
- Allow syncing with Apple Health
- Improve Apple Watch integration
- Add more customization options


### 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 Interval Timer free?

Interval Timer 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, Interval Timer or Plankstar?

Interval Timer is rated higher. Interval Timer averages 4.5 out of 5 from 19K ratings, while Plankstar averages 3.5 from 2 ratings.

### Do Interval Timer or Plankstar have ads?

Both Interval Timer and Plankstar show ads.

### Which is updated more often, Interval Timer or Plankstar?

Interval Timer ships an update every 9 days, and Plankstar every 3 months. Most recently, Interval Timer was updated on September 24, 2026 and Plankstar on September 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*