Comparison

Codex Numbers vs Flag Quiz

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

Head to head
About

Codex Numbers

A logic puzzle game where players race to guess their opponent's secret code before they guess yours. Offers single-player against AI and online multiplayer modes with scoring and leaderboards.

Highlights
  • Secret code guessing gameplay
  • Single-player AI challenges
  • Online multiplayer with friends
  • Training mode for skill improvement
  • Game Center integration
  • Scoring and leaderboards
  • Timed online matches
Features
Read full description

If you are a fan of logic games, this is the right one for you which is a very addictive game you can play for hours. Today, challenge yourself, artificial intelligence, friends, and the world with this iOS top game app! You should try this game to improve your intelligence which is easy to learn. GOAL OF THE GAME Before your opponent finds your secret code you should find his/her secret code in minimum steps. RULES There are 2 simple rules of the game 1. GREEN color means that digit exist and its place is correct. 2. RED color means that digit exist but its place is incorrect. TRAINING You can determine your strength in training mode. The average number of guesses that you find computer's secret code determines your game power. As an example, if you find the secret code in 5 guesses in the first game and next you find the secret code in 6 guesses, then your game power will be 5.500 after two games. Your game power is sent to Game Center in training mode obtained after completion of 10 games. Your game power ranking will be updated as the best game power. Reaching success within 5 steps in Training mode will be listed in the Masters Club. Whenever you want, you can reset your training mode from the game settings. ARTIFICIAL INTELLIGENCE There are eight artificial intelligence players which are ranked from easy to difficult. You can play with the AI player of any level. You can also earn stars from AI players according to theirs level. For example You can earn 10 stars from Master for each win and 5 stars for each draw. ONLINE GAMES You can play the game by inviting your friends to Game Center. With Play Now option you can play with randomly selected opponents who are currently active. When you lose the connection or the opponent quits, you can continue to play with Artifical Intelligence player Master from where you left. At the end of the game the system gives rematching option with your opponent. If your opponent accepts the invitation then a new match starts. Thus you can play as many games as you want with the same opponent. You can earn points only through online game. In the three-digit game mode you may earn 3 points for each win and 1 point for each draw. But in the four-digit game mode you may earn 5 points for each win and 2 points for each draw. Your score will be updated in real time on Game Center score boards. There are some timing restrictions on online games. The limit for three-digits game is 5 minutes, and 7 minutes for four-digit game. The game is lost when time is up. Online games can be played when you have enough credits. In Shopping menu, you can earn 5 credits with the rewarded videos. If you want to play games without interruption and ads you can buy advantageous online game packages.

About

Flag Quiz

Learn and memorize national flags from around the world with this engaging quiz game. It offers short, repeatable quizzes to enhance memory and knowledge of global geography in an entertaining and user-friendly format.

Highlights
  • Short, repeatable quizzes
  • Progress tracking graph
  • Memory skill improvement
  • User-friendly interface
  • Educational content
  • Challenging gameplay
Features
Read full description

Flags Quiz: Test Your Knowledge of National Flags with World Flags Game! Short Description: Learn and remember the national flags of various countries and regions around the world with Flags Quiz, a fun and efficient quiz-style game. Improve your memory skills and expand your knowledge of world flags! Features: Efficient Learning: Flags Quiz is a simple quiz-style game with short quizzes of mainly 5 questions each, allowing you to study and practice repeatedly until you get all the questions right. This feature makes learning more efficient and effective. Progress Tracking: The app has a comprehensive progress tracking system that visually represents your learning status on a graph. This feature makes it easy to track your progress and identify areas where you need to improve your knowledge of world flags. Entertainment: Flags Quiz is designed to improve your memory skills and expand your knowledge of world flags in an entertaining way. The app provides a fun and challenging way to test your knowledge of national flags. User-Friendly: Flags Quiz is user-friendly and easy to navigate, making it accessible to users of all ages and backgrounds. Educational: Flags Quiz is an educational game that helps you learn and remember the national flags of various countries and regions around the world. It is perfect for children, students, and anyone interested in international geography, travel, culture, language, and history. Challenging: Flags Quiz provides a fun and challenging way to test your knowledge of national flags and compete against others. Description: If you want to learn and remember the national flags of various countries and regions around the world, Flags Quiz: Test Your Knowledge of National Flags with World Flags Game is the perfect app for you! This quiz-style game features short quizzes of mainly 5 questions each, allowing you to study and practice repeatedly until you get all the questions right. Flags Quiz is an educational game that helps you learn and remember the national flags of various countries and regions around the world. It is perfect for children, students, and anyone interested in international geography, travel, culture, language, and history. The app is designed to improve your memory skills and expand your knowledge of world flags in an entertaining way. Flags Quiz provides a fun and challenging way to test your knowledge of national flags and compete against others. The app is user-friendly and easy to navigate, making it accessible to users of all ages and backgrounds. Flags Quiz also features a comprehensive progress tracking system that visually represents your learning status on a graph. This feature makes it easy to track your progress and identify areas where you need to improve your knowledge of world flags. So, download Flags Quiz: Test Your Knowledge of National Flags with World Flags Game now and start improving your memory skills and expanding your knowledge of world flags today!

Screenshots

Codex Numbers4 screens
Flag Quiz4 screens

Verdict

The call

The clearest difference is rating: Flag Quiz at 4.4 against Codex Numbers's 1.0. Flag Quiz also leads on in-app purchases (none vs 4) and update cadence (every 4 days vs monthly). On price, ads, 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. Codex Numbers sells 4 one-off in-app purchases. Flag Quiz asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Flag Quiz holds the better App Store score, 4.4 against 1.0. That said, the two scores are not equally well evidenced: Flag Quiz has 20 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Codex Numbers ships an update monthly, Flag Quiz every 4 days. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.

Scorecard5 real differences · 5 level
Codex Numbers versus Flag Quiz: the parameters behind the verdict, then further details
ParameterCodex NumbersFlag Quiz
PriceFreeFree
Rating1.0 (1 ratings)4.4 (20 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings120 — better
Update frequencyMonthlyEvery 4 days — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size132 MB88 MB
Age rating4+9+
DeveloperAlaattin BedirTaisuke Hosokawa

Customer experience

Codex Numbers

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

Flag Quiz

All ratings20 ratings
Positive85.0%
Neutral10.0%
Negative5.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Codex Numbers

One-time4
  • Small Online Game Packet (1000 Games)$0.99
  • No Ads (Remove all ads)$1.99
  • Middle Online Game Package (3000 Games)$1.99
Show 1 more
  • Big Online Game Package (5000 Games)$2.99
None

Flag Quiz

No in-app purchases

Questions

Is Codex Numbers free?
Codex Numbers is free to download, with in-app purchases available.
Is Flag Quiz free?
Flag Quiz is free to download, with no in-app purchases.
Which has better reviews, Codex Numbers or Flag Quiz?
Flag Quiz is rated higher. Codex Numbers averages 1.0 out of 5 from 1 ratings, while Flag Quiz averages 4.4 from 20 ratings.
Do Codex Numbers or Flag Quiz have ads?
Both Codex Numbers and Flag Quiz show ads.
Which is updated more often, Codex Numbers or Flag Quiz?
Codex Numbers ships an update monthly, and Flag Quiz every 4 days. Most recently, Codex Numbers was updated on October 7, 2026 and Flag Quiz on September 28, 2026.

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