Comparison

ZuDoKu vs Dr. Virus

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

Head to head
About

ZuDoKu

Experience Sudoku in fresh ways with number, figure, or letter-based puzzles. Adjust difficulty, receive real-time conflict alerts, and track your progress with detailed game statistics. Choose timed or untimed modes for a personalized challenge.

Highlights
  • Classic number Sudoku
  • Figure-based Sudoku puzzles
  • Letter-based Sudoku puzzles
  • Adjustable game levels
  • Real-time conflict alerts
  • Timed or untimed modes
  • Game statistics and progress tracking
Read full description

This app is a new kind of the classic Sudoku game. With this app, users can choose three different types of Sudoku games to play: 1. The classic Sudoku games that use numbers 1 to 9. 2. New Sudoku games that use interesting figures instead of numbers. A different set of figures are used in each game to keep the games challenging. 3. New Sudoku games that use letters (A to I) instead of numbers. Added to the above, users may choose six different game levels to challenge their logic and analytic skills. Moreover, in each game, the app will notify users if they select an item (number, letter or figure) for location is in conflict with the same item that is already set in the same row, column or quadrant with respect to that location. This ensures users will always be able to complete every game they play. Furthermore, to make games even more interesting, users may choose if there is a time limit or no time limit set for each game. Also, you may turn-on/off sound  effects that are used to alert users when they have completed one row, one column, one quadrant, the entire game or the game time has expired. Finally, after a game is completed, the app will display game statistics  and compare that to any of your past best game results for the same game level. This aids you to gauge your progress in improving your game solving skills.

About

Dr. Virus

A classic falling block puzzle game where players strategically drop colored capsules to eliminate viruses. Progress through levels by clearing the screen and challenge yourself with different game modes.

Highlights
  • Falling block puzzle gameplay
  • 20 classic levels
  • Challenge mode with online leaderboard
  • Practice mode to select levels
  • Save and resume games
  • Offline and online high scores
Features
Read full description

GAME RULES ---------------- Dr. Virus is a falling block puzzle game. The player's objective is to destroy the viruses by using colored capsules that are tossed into the bottle. The player manipulates each capsule as it falls, with the goal being to align similar colors which removes the viruses. The player progresses through the game by eliminating all the viruses on the screen in each level. FEATURES ---------------- + 20 classic levels. + Play with buttons or gesture. + CHALLENGE mode: the player starts at level 0 and submit the score to online leaderboard. + PRACTICE mode: same with class game, the player can select which level to start at. + MINI GAMES: more way to explore, play custom and challenging stages. + Save your current game and play it later. + Offline high scores and online leaderboard. FAN PAGE ------------------ + Facebook: https://www.facebook.com/qastudiosapps + Twitter: https://twitter.com/qastudios

Screenshots

ZuDoKu4 screens
Dr. Virus2 screens

Verdict

The call

The clearest difference is review sentiment: ZuDoKu at 100% against Dr. Virus's 19%. ZuDoKu also leads on rating (5.0 vs 2.6) and update cadence (every 9 days vs every 2 months). Dr. Virus's advantage is price (Free vs $0.99) and ratings volume (25 vs 4). On ads, in-app purchases and device support 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

Dr. Virus is free to download; ZuDoKu costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ZuDoKu holds the better App Store score, 5.0 against 2.6. That said, the two scores are not equally well evidenced: Dr. Virus has 25 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of ZuDoKu's written reviews are positive against 19% of Dr. Virus's.

UpkeepUpdate frequency

ZuDoKu ships an update every 9 days, Dr. Virus every 2 months. Both last shipped on November 3, 2026.

Scorecard7 real differences · 3 level
ZuDoKu versus Dr. Virus: the parameters behind the verdict, then further details
ParameterZuDoKuDr. Virus
Price$0.99Free — better
Rating5.0 (4 ratings) — better2.6 (25 ratings)
Positive reviews100.0% of reviews — better18.8% of reviews
Number of ratings425 — better
Update frequencyEvery 9 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.112.0 — better
Further details — not scored
Size33 MB47 MB
Age rating4+4+
DeveloperDynetix Design Solutions IncQuang Duc Vu

Customer experience

ZuDoKu

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Dr. Virus

All ratings24 ratings
Positive29.2%
Neutral8.3%
Negative62.5%
Written reviews16 reviews
Positive18.8%
Neutral12.5%
Negative68.8%

In-app purchases

None

ZuDoKu

No in-app purchases

None

Dr. Virus

No in-app purchases

Questions

Is ZuDoKu free?
ZuDoKu costs $0.99, with no in-app purchases.
Is Dr. Virus free?
Dr. Virus is free to download, with no in-app purchases.
Which has better reviews, ZuDoKu or Dr. Virus?
ZuDoKu is rated higher. ZuDoKu averages 5.0 out of 5 from 4 ratings, while Dr. Virus averages 2.6 from 25 ratings.
Do ZuDoKu or Dr. Virus have ads?
Neither ZuDoKu nor Dr. Virus shows ads.
Which is updated more often, ZuDoKu or Dr. Virus?
ZuDoKu ships an update every 9 days, and Dr. Virus every 2 months. Most recently, ZuDoKu was updated on November 3, 2026 and Dr. Virus on November 3, 2026.

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