Know vs Estiball
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Know
Engage in a multiplayer guessing game where players estimate facts across various themes. Compete with friends to achieve the highest score and earn bragging rights.
- Multiplayer guessing gameplay
- Estimate facts on various themes
- Create custom games with chosen sets and rounds
- Shared paid content access
- Fun mode for bonus points
- Competitive scoring system
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Know-it-all - The Multiplayer Guessing Game Know-it-all is the guessing game for your game night. Estimate facts about a wide range of themes like world records, history, curiosities, 2000s or medicine and show your friends who knows it all! In this funny and varied guessing game you have to estimate different aspects and hopefully for you, a bit better than your opponents ;) - How to connect? At the beginning one of you creates a game. Choose as many sets as you like and decide how many rounds your game should go. To play the paid card sets, only one of you has to buy the set. When this person creates the game, everyone - even the players who didn't buy the set - can join the round! The other players join the game by searching for the given game code. - The Game Principle All players see the same question. Think carefully and enter your estimate in the provided space. Once all players have entered their guess, you will see the result of the round: The better your guess is compared to your fellow players, the more points you will receive. The number of points awarded is always equal to the number of players in the game. (For example: 4 players take part in the game: the best guess gets 4 points, the second best 3 points, the third best 2 points and the last one only 1 point) - The Fun mode Activating fun mode gives you two additional opportunities to make a few bonus points in each round: 1) Decide which of your fellow players will give the worst and who will give the best tip in each round. Of course you make this decision after you have seen the question. For each correct tip you get one bonus point 2) After all estimates have been given, you will see an overview with all estimations AND the correct result. Now decide which of the shown values is the correct result of the question. If you bet correctly, you will receive another bonus point. - End of game The game ends when you reach the number of rounds you set before. The player with the most points wins the game. The losers may only address him as "Master" or "Highness" until the end of the day (or the next round). Know-it-all - The Multiplayer Guessing Game Know-it-all is a fun guessing game for you and your friends. Guess facts about interesting topics like for an example sports, curiosities, history, 2000s or medicine and show your incredible knowledge. Estimate the different aspects and enjoy playing with your friends.
Estiball
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How many are bouncing around? Take a look, trust your gut and type in your estimate – no counting allowed! Estiball trains your number sense: the ability to judge quantities at a glance. After every round you see how close you were, as a percentage of the correct answer. CHOOSE YOUR CHALLENGE • Kids: up to 10, 20 or 50 objects – bigger and slower, perfect for young children • Adults: 11–100, 101–500 or 101–1000 objects – from warm-up to real challenge CHOOSE WHAT BOUNCES 21 objects, each in its own world: balls in a pinball machine, bees in a meadow, fish under water, dinosaurs in a prehistoric valley, kites in the spring sky and many more. A live preview on the start screen shows your choice before you play. SEE YOUR PROGRESS • Your accuracy in percent after every round • Your last rounds at a glance, so you can see yourself improving • Play the next round with one tap, or change the difficulty any time MADE FOR EVERYONE • No account, no sign-up • Available in 12 languages Great for kids learning numbers, for families competing against each other, and for anyone who wants to keep their mind sharp in a short break. How good is your number sense? Find out with Estiball!
Screenshots
Verdict
The clearest difference is in-app purchases: Estiball at none against Know's 12. Estiball also leads on update cadence (every 8 days vs every 2 months). Know's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price 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. Know sells 12 in-app purchases, starting at $3.99 per month. Estiball asks for nothing beyond the download.
Know ships an update every 2 months, Estiball every 8 days. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.
| Parameter | Know | Estiball |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (9 ratings) — better | — |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 2 months | Every 8 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 64 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Flying Potato Entertainment | Ulrich Helker |
In-app purchases
Know
- Premium - Monthly$3.991 Month
- Premium - Yearly$22.991 Year
- The 2000's II$1.99
- Medical Curiosities$1.99
- History lessons I$1.99
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- World records$1.99
- Crazy stuff$1.99
- Foodissimo$1.99
- Let's talk about sex$1.99
- Hollywood$1.99
- Crazy world of liquors$1.99
- All 11 Sets - Save 50%$10.99
Estiball
No in-app purchases









