Comparison

Know Brainer vs Kluchi

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

Head to head
About

Know Brainer

Explore fascinating science facts and distinguish truth from fiction. Engage in challenges, discover surprising facts, and compete with others to become the smartest player. This addictive and free game offers a fresh perspective on the world.

Highlights
  • Mind-blowing science facts
  • Distinguish fact from fiction
  • Surprising discoveries
  • Challenge fellow players
  • Free to play
  • Addictive gameplay
Features
Read full description

Launch yourself into the mysterious world of mind-blowing science and atom-splitting facts! Unleash your smarts, wit and intuition to separate fact from fiction. Surprising discoveries and mega prizes await! Challenge fellow players and become the brightest star in the internet galaxy! This app is truly addictive, interesting and completely free. See the world differently and recharge your batteries!

About

Kluchi

This puzzle game challenges players to strategically place all keys onto a table. Utilize unique key connectors and special "neighbors" mechanics to solve increasingly complex arrangements. Hints are available to assist when you get stuck.

Highlights
  • Key placement puzzle
  • Unique connector mechanics
  • Special 'neighbors' keys
  • Hint system
  • Brain training benefits
  • New puzzle type
Features
Read full description

«Kluchi» - an exciting puzzle of a completely new type! The player's goal is to place all the keys in the table at the same time. It's easy to play! Just touch any item below the table, and the key by itself will fly upward. When the key is above the table, move it to the left or right to find a free space. If you see a locking icon on the key, it means that the place is busy or the key is behind the edge of the table. If there is no locking icon, simply release the key and it by itself will put in the table. Did you move all the keys to the table? - you solved the task! What do all these symbols mean? The key is a pair of items with connectors. Connectors talks how key's elements will be placed in the table relative to each other. - Triangular connectors indicate that the elements will be located in adjacent columns, but the first on the left, and the second on the right. - Rectangular connectors indicate that the elements will be in the table strictly in one column. - Round connectors say that the key's elements will be located in adjacent columns, but in advance it is not known in which order. This key is called "neighbors" and it's special: you can swap its elements. This affects its position in the table and the solution of the task as a whole. The button with the image of two arrows inverts all the "neighbors" located below the table. Be sure to try this button if the task has keys "neighbors" and you have something that does not work You can also use hints. The use of one hint leads to the fact that the game selects a random key, and puts it in the table correctly. The number next to the lamp icon says how many hint you have left. Hints are not free, but are not a necessary part of the game. Answers to the three most frequent questions: 1. The order of the elements in the table can be any. It is important only to put all keys to the table. 2. After solving the task, free cells can remain in the table. 3. Identical elements should be placed in the same cell of the table. After all, each element of the table is unique, and can meet in it only once. «Kluchi» is an interactive version of the my effective trainer for the brain «Genius Brain», and positively affects the following cognitive phenomena: - analytical and logical thinking; - accuracy and stability of thinking; - short-term and long-term memory; - concentration of attention; - iq, liquid intelligence; - imagination and creativity. If you have solved all the tasks in «Kluchi» and it is not enough for you, feel free to go to the «Genius Brain»: https://itunes.apple.com/app/id560072848 «Kluchi» is a truly new type of puzzle. True, you have not seen this until now. In importance, the emergence of this game can be compared with the emergence of sokoban or chess. In general, the essence of the game is to find such arrangement of keys, in which they all fit into the table. In fact, you play a normal puzzle, but in a very very unusual shape. At small levels, it's easy and pleasant to play, on large you load the brain well. Move the keys into the table, swipe, put in their place new, turn over "neighbors". This is the magic of pure symbols - the magic of logic!

Screenshots

Know Brainer3 screens
Kluchi4 screens

Verdict

The call

The clearest difference is in-app purchases: Know Brainer at none against Kluchi's 1. Know Brainer also leads on review sentiment (80% vs 50%) and iOS requirement (11.0 vs 15.6). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Kluchi sells 1 one-off in-app purchase. Know Brainer asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on June 24, 2026 and September 4, 2026 respectively.

Scorecard4 real differences · 6 level
Know Brainer versus Kluchi: the parameters behind the verdict, then further details
ParameterKnow BrainerKluchi
PriceFreeFree
Rating5.0 (1 ratings) — better
Positive reviews80.0% of reviews — better50.0% of reviews
Number of ratings1 — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.6
Further details — not scored
Size92 MB5 MB
Age rating4+4+
DeveloperRitoriMaxim Polous

Customer experience

Know Brainer

Written reviews10 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

Kluchi

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Know Brainer

No in-app purchases

1 purchases

Kluchi

One-time1
  • 9 hints$0.99

Questions

Is Know Brainer free?
Know Brainer is free to download, with no in-app purchases.
Is Kluchi free?
Kluchi is free to download, with in-app purchases available.
Do Know Brainer or Kluchi have ads?
Neither Know Brainer nor Kluchi shows ads.
Which is updated more often, Know Brainer or Kluchi?
Know Brainer ships an update every 3 weeks, and Kluchi every 3 weeks. Most recently, Know Brainer was updated on June 24, 2026 and Kluchi on September 4, 2026.

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