# Round Pop Bubble vs Fill Sand

The clearest difference is in-app purchases: Round Pop Bubble at none against Fill Sand's 10. Round Pop Bubble also leads on iOS requirement (13.0 vs 15.0). Fill Sand's advantage is update cadence (every 3 days vs every 2 weeks) and chart position (#105 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. Fill Sand sells 10 one-off in-app purchases. Round Pop Bubble asks for nothing beyond the download.

Round Pop Bubble ships an update every 2 weeks, Fill Sand every 3 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Round Pop Bubble | Fill Sand |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (805 ratings)](https://appshunter.io/ios/app/fill-sand-block-puzzle/id6797907221/reviews)** |
| Number of ratings | — | **805** |
| Positive reviews | — | 22.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#105** |
| Size | 138 MB | 510 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [HUANG LUC](https://appshunter.io/developer/1885654523) | [Stormborn Inc.](https://appshunter.io/developer/1698445266) |

## What reviewers say

### Round Pop Bubble

[App page](https://appshunter.io/ios/app/round-pop-bubble/id6760675980)

**In-app purchases:** none


### Fill Sand

[App page](https://appshunter.io/ios/app/fill-sand-block-puzzle/id6797907221)

**Currently charting:** #105 Top Grossing · Puzzle, #112 Top Grossing · Casual, #128 Top Free · Casual, #128 Top Free · Puzzle (US App Store)

This physics-based puzzle game challenges you to clear colored sand from a grid. Strategically place blocks to absorb matching grains, causing the remaining sand to collapse and resettle. Uncover colorful pictures by emptying the entire grid before time runs out.

**Highlights:** Real falling-sand physics, One-finger drag controls, Colorful pictures to uncover, Shape and space planning, Quick stages, Special block types

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Bundle | $1.99 | one-time |
| 1,000 Coins | $1.99 | one-time |
| Fail Offer | $4.99 | one-time |
| 5,000 Coins | $7.99 | one-time |
| No Ads | $7.99 | one-time |
| Fail Offer 02 | $8.99 | one-time |
| Sand Pass | $9.99 | one-time |
| Small Bundle | $9.99 | one-time |
| 10,000 Coins | $14.99 | one-time |
| Fail Offer 03 | $14.99 | one-time |


## Frequently asked questions

### Is Round Pop Bubble free?

Round Pop Bubble is free to download, with no in-app purchases.

### Is Fill Sand free?

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

### Do Round Pop Bubble or Fill Sand have ads?

Both Round Pop Bubble and Fill Sand show ads.

### Which is updated more often, Round Pop Bubble or Fill Sand?

Round Pop Bubble ships an update every 2 weeks, and Fill Sand every 3 days. Most recently, Round Pop Bubble was updated on November 9, 2026 and Fill Sand on November 10, 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.*