# PopStar with Undo vs Countdown (Pro)

The clearest difference is review sentiment: Countdown (Pro) at 100% against PopStar with Undo's 33%. Countdown (Pro) also leads on in-app purchases (none vs 1) and ads (none vs shown). PopStar with Undo's advantage is ratings volume (6 vs 1). On price and device support there is nothing between them.

Both are free to download. PopStar with Undo sells 1 one-off in-app purchase. Countdown (Pro) asks for nothing beyond the download.

Countdown (Pro) holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: PopStar with Undo has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of PopStar with Undo's written reviews are positive against 100% of Countdown (Pro)'s.

PopStar with Undo ships an update every 11 months, Countdown (Pro) every 5 weeks. The most recent releases landed on October 29, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | PopStar with Undo | Countdown (Pro) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (6 ratings)](https://appshunter.io/ios/app/popstar-with-undo/id598512361/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/countdown-pro/id6477356554/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 months | **Every 5 weeks** |
| Monetization | Paid | **Free** |
| Size | 22 MB | 45 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oscar Tsang](https://appshunter.io/developer/416987065) | [christoph joshua BOLL](https://appshunter.io/developer/1631352653) |

## What reviewers say

### PopStar with Undo

[App page](https://appshunter.io/ios/app/popstar-with-undo/id598512361)

This highly addictive puzzle game offers two distinct modes: Classic, where you clear blocks to meet level targets without a time limit, and Endless, which challenges you to clear as many blocks as possible against the clock. Features include an undo button and customizable block colors.

**Highlights:** Two game modes: Classic and Endless, Tap two or more same-colored blocks, No time limit in Classic mode, Time-based challenges in Endless mode, Undo button, Customizable block colors

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove advertisement | $1.99 | one-time |


### Countdown (Pro)

[App page](https://appshunter.io/ios/app/countdown-pro/id6477356554)

Track upcoming events, set reminders for important dates, and personalize your countdowns with images and names. Share your anticipation with friends and family. Enjoy a seamless, ad-free experience for all your time-tracking needs.

**Highlights:** Personal countdowns for events, Customizable reminders, Ad-free experience, User-friendly interface, Personalization with pictures and names, Shareable countdowns

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

**In-app purchases:** none


## Frequently asked questions

### Is PopStar with Undo free?

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

### Is Countdown (Pro) free?

Countdown (Pro) is free to download, with no in-app purchases.

### Which has better reviews, PopStar with Undo or Countdown (Pro)?

Countdown (Pro) is rated higher. PopStar with Undo averages 4.7 out of 5 from 6 ratings, while Countdown (Pro) averages 5.0 from 1 ratings.

### Do PopStar with Undo or Countdown (Pro) have ads?

PopStar with Undo shows ads; Countdown (Pro) does not.

### Which is updated more often, PopStar with Undo or Countdown (Pro)?

PopStar with Undo ships an update every 11 months, and Countdown (Pro) every 5 weeks. Most recently, PopStar with Undo was updated on October 29, 2026 and Countdown (Pro) on October 11, 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.*