Knowledge Quiz KH vs Merge Numbers ：2+2=4
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Knowledge Quiz KH
Test your general knowledge with this fun multiple-choice quiz game. Compete with players worldwide, learn new facts across various categories, and aim for high scores. It offers hints and lives to help you progress.
- Thousands of multiple choice questions
- Multiple categories (History, Science, Sports, etc.)
- High scores and online leaderboards
- Hints and lives system
- Fast-paced answering for bonus points
- Beautiful graphics
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Knowledge Quiz KH is a fun quiz game to test your knowledge. Knowledge is power. You can test your general knowledge on this game. Knowledge Quiz KH is a multiple choice game quiz. You can compare your knowledge with the rest of the world! Knowledge Quiz KH is the perfect quiz game for having fun and learning new things at the same time! Download it now and enjoy while improving your general knowledge. How to play: + You must answer all the questions correctly + You have 3 lives and hints + The faster you answer, the more point you get Knowledge Quiz KH game offers: + Over thousands of multiple choice questions + High scores + Online Score + Beautiful graphics + It is absolutely free Many categories to play and learn: + History + Geography + Science + Arts + Sports + Technology + Politics + Flag quiz + Capital quiz + Logo quiz + And many more
Merge Numbers ：2+2=4
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Very simple and interesting digital synthesis game, with three playing modes for you to experience Play: 1. Click the number to be increased or decreased to synthesize the data 2. Calculation can achieve more synthesis in a limited number of steps
Screenshots
Verdict
The clearest difference is in-app purchases: Knowledge Quiz KH at none against Merge Numbers ：2+2=4's 5. Merge Numbers ：2+2=4's advantage is iOS requirement (11.0 vs 13.0). On price, ads 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
Both are free to download. Merge Numbers ：2+2=4 sells 5 one-off in-app purchases. Knowledge Quiz KH asks for nothing beyond the download.
| Parameter | Knowledge Quiz KH | Merge Numbers ：2+2=4 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (17 ratings) — better | — |
| Number of ratings | 17 — better | — |
| Update frequency | Weekly | — |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 67 MB |
| Age rating | 4+ | 4+ |
| Developer | Phearoth Phen | 玲 郭 |
In-app purchases
Knowledge Quiz KH
No in-app purchases
Merge Numbers ：2+2=4
- 240COINS$0.99
- REMOVE ADS$1.99
- 800COINS&REMOVE ADS$2.99
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- 1400COINS&REMOVE ADS$4.99
- 3000COINS&REMOVE ADS$9.99
Questions
Is Knowledge Quiz KH free?
Is Merge Numbers ：2+2=4 free?
Do Knowledge Quiz KH or Merge Numbers ：2+2=4 have ads?
Other comparisons
