# Sky Plunger vs Double Number Merging

The clearest difference is rating: Double Number Merging at 3.9 against Sky Plunger's 2.3. Double Number Merging also leads on update cadence (every 3 months vs every 18 months) and ratings volume (779 vs 10). Sky Plunger's advantage is iOS requirement (13.0 vs 15.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Sky Plunger sells 6 in-app purchases, starting at $1.99 per 7 days and Double Number Merging sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Double Number Merging holds the better App Store score, 3.9 against 2.3. That said, the two scores are not equally well evidenced: Double Number Merging has 779 ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 8% of Sky Plunger's written reviews are positive against 7% of Double Number Merging's, so the app with the better star average is not the one people write more warmly about.

Sky Plunger ships an update every 18 months, Double Number Merging every 3 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Sky Plunger | Double Number Merging |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (10 ratings)](https://appshunter.io/ios/app/sky-plunger/id6478073682/reviews) | **[3.9 (779 ratings)](https://appshunter.io/ios/app/double-number-merging/id6736434801/reviews)** |
| Number of ratings | 10 | **779** |
| Positive reviews | **8.3% of reviews** | 7.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 18 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 177 MB | 290 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [RayGames](https://appshunter.io/developer/1725090177) | [puzzle studio](https://appshunter.io/developer/1562662220) |

## What reviewers say

### Sky Plunger

[App page](https://appshunter.io/ios/app/sky-plunger/id6478073682)

Blast dynamite to collect airborne treasures and scraps. Upgrade your equipment to reach greater heights and earn more gold. Enjoy simple, addictive gameplay with a focus on progression.

**Highlights:** Dynamite blast shooting, Scrap and treasure collection, Basket space upgrades, Dynamite blast upgrades, Addictive gameplay

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Pop Up Ads | $1.99 | per 7 days |
| 1,000 | $0.99 | one-time |
| 5,000 | $5.99 | one-time |
| 10,000 | $9.99 | one-time |
| 100,000 | $24.99 | one-time |
| 1,000,000 | $99.99 | one-time |


### Double Number Merging

[App page](https://appshunter.io/ios/app/double-number-merging/id6736434801)

Engage your mind with a classic number-themed puzzle game. Strategically merge falling number blocks to clear space and achieve higher scores. Enjoy a fun and challenging experience anywhere, anytime, with features like daily bonuses and progress saving.

**Highlights:** Number block merging, Brain exercise, Multiple levels, Daily bonuses, Auto-save progress, Smash unwanted blocks

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 Diamonds | $0.99 | one-time |
| 10 Hammers | $1.49 | one-time |
| 10 Switches | $1.49 | one-time |
| 3000 Diamonds | $2.99 | one-time |
| 4400 Diamonds | $3.99 | one-time |
| Starter Pack | $4.99 | one-time |
| 9200 Diamonds | $7.99 | one-time |
| 18100 Diamonds | $14.99 | one-time |
| 26000 Diamonds | $19.99 | one-time |

**What reviewers like**

- 💡 Fun game concept

**What reviewers complain about**

- 🚫 Excessive ads that cover the screen
- 🐛 Ads that won't close or minimize
- 🚫 Ads that interrupt gameplay
- 🚫 Ads that prevent playing the game

**Reported bugs**

- Purchased items not received
- Freezing and crashing issues

**Requested features**

- Option to remove ads for a fee
- Reduce frequency of ads during gameplay


## Frequently asked questions

### Is Sky Plunger free?

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

### Is Double Number Merging free?

Double Number Merging is free to download, with in-app purchases available.

### Which has better reviews, Sky Plunger or Double Number Merging?

Double Number Merging is rated higher. Sky Plunger averages 2.3 out of 5 from 10 ratings, while Double Number Merging averages 3.9 from 779 ratings.

### Do Sky Plunger or Double Number Merging have ads?

Both Sky Plunger and Double Number Merging show ads.

### Which is updated more often, Sky Plunger or Double Number Merging?

Sky Plunger ships an update every 18 months, and Double Number Merging every 3 months. Most recently, Sky Plunger was updated on October 24, 2026 and Double Number Merging on October 30, 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.*