# PopSudoku vs Crystal Drop!

The clearest difference is in-app purchases: PopSudoku at none against Crystal Drop!'s 16. PopSudoku also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Crystal Drop! sells 16 one-off in-app purchases. PopSudoku asks for nothing beyond the download.

PopSudoku ships an update every 9 days, Crystal Drop! every 8 days. The most recent releases landed on October 17, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PopSudoku | Crystal Drop! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (1.3K ratings)](https://appshunter.io/ios/app/crystal-drop/id6758303845/reviews)** |
| Number of ratings | — | **1.3K** |
| Positive reviews | — | 32.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 19 MB | 544 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [junyi Shen](https://appshunter.io/developer/687347602) | [Craft Games](https://appshunter.io/developer/1681391760) |

## What reviewers say

### PopSudoku

[App page](https://appshunter.io/ios/app/popsudoku/id1631786339)

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

**In-app purchases:** none


### Crystal Drop!

[App page](https://appshunter.io/ios/app/crystal-drop/id6758303845)

Engage in a relaxing puzzle game focused on order and smart planning. Sort flowing crystals into their correct carts by strategically managing a dynamic railway system. Success relies on foresight and understanding the flow, not speed.

**Highlights:** Satisfying crystal-sorting puzzles, Dynamic railway system, No time pressure, Increasing difficulty, Strategic planning

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

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Special Bundle 1 | $0.99 | one-time |
| Starter Bundle | $1.99 | one-time |
| Mini Coin Pack | $1.99 | one-time |
| Fortune Trail | $2.99 | one-time |
| Starter Bundle 3 | $2.99 | one-time |
| Special Bundle 3 | $2.99 | one-time |
| Special Offer | $4.99 | one-time |
| Captain's Treasure | $4.99 | one-time |
| Starter Bundle 5 | $4.99 | one-time |
| Small Coin Pack | $7.99 | one-time |
| Starter Bundle 10 | $9.99 | one-time |
| Pirate's Treasure | $9.99 | one-time |
| Special Bundle 10 | $9.99 | one-time |
| Medium Coin Pack | $14.99 | one-time |
| Special Bundle 15 | $14.99 | one-time |
| Hunter's Treasure | $19.99 | one-time |


## Frequently asked questions

### Is PopSudoku free?

PopSudoku is free to download, with no in-app purchases.

### Is Crystal Drop! free?

Crystal Drop! is free to download, with in-app purchases available.

### Do PopSudoku or Crystal Drop! have ads?

Crystal Drop! shows ads; PopSudoku does not.

### Which is updated more often, PopSudoku or Crystal Drop!?

PopSudoku ships an update every 9 days, and Crystal Drop! every 8 days. Most recently, PopSudoku was updated on October 17, 2026 and Crystal Drop! 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.*