Comparison

PopSudoku vs Crystal Drop!

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

PopSudoku

Features
Read full description

Solving Sudoku is now as satisfying as popping bubbles! PopSudoku reimagines the classic logic puzzle with revolutionary interaction and smart guidance. Our signature Bubble Selector lets numbers pop up right at your fingertip. No more looking back and forth - just pure, uninterrupted flow. Key Features: * Innovative Interaction: An intuitive pop-up interface designed for the ultimate mobile experience. * Live Library: Connect to fetch endless high-quality puzzles online. * Smart Assistance: ** Conflict Highlighting: Instantly marks duplicates and errors, making logic blind spots visible. ** Smart Hints: Get precise guidance on the correct number or your next logical move. * Minimalist and Modern: A clean UI built with smooth animations for maximum focus.

About

Crystal Drop!

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
Read full description

Crystal Drop! – Sort Puzzle is a relaxing puzzle game about order, flow, and smart planning. Each level asks you to sort flowing crystals into the correct carts. Crystals arrive continuously on a railway, and every move affects what comes next. Pour too early or into the wrong place, and you can block your progress. The challenge is reading the full setup and committing to the right sequence. Carts fill, paths shift, and once crystals start flowing, mistakes cannot be taken back. What to expect: Satisfying crystal-sorting puzzles - A steady railway that keeps levels dynamic - No time pressure. Play at your own pace - Increasing difficulty through layout, not new rules Crystal Drop! – Sort Puzzle rewards patience and foresight. Solving a level is not about speed. It is about understanding the flow and finding the right order to restore balance.

Screenshots

PopSudoku4 screens
Crystal Drop!4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
PopSudoku versus Crystal Drop!: the parameters behind the verdict, then further details
ParameterPopSudokuCrystal Drop!
PriceFreeFree
Rating—4.8 (1.3K ratings) — better
Positive reviews—32.3% of reviews
Number of ratings—1.3K — better
Update frequencyEvery 9 daysEvery 8 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size19 MB544 MB
Age rating4+4+
Developerjunyi ShenCraft Games

In-app purchases

None

PopSudoku

No in-app purchases

16 purchases

Crystal Drop!

One-time16
  • Special Bundle 1$0.99
  • Starter Bundle$1.99
  • Mini Coin Pack$1.99
Show 13 more
  • Fortune Trail$2.99
  • Starter Bundle 3$2.99
  • Special Bundle 3$2.99
  • Special Offer$4.99
  • Captain's Treasure$4.99
  • Starter Bundle 5$4.99
  • Small Coin Pack$7.99
  • Starter Bundle 10$9.99
  • Pirate's Treasure$9.99
  • Special Bundle 10$9.99
  • Medium Coin Pack$14.99
  • Special Bundle 15$14.99
  • Hunter's Treasure$19.99

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.

Other comparisons