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Concentration Grid icon
GOOGLE PLAY

Concentration Grid

STALWART GROUP LLC · Sports · Japan store
NOT IN TOP 100 HERE
View on Google Play ↗ Instagram card App Store version →
Revenue a month, worldwide
Too small to estimate
Not enough chart or ratings data
New ratings
Tracking
Daily counts start building from today
Countries it ranks in
0
was 0 on Oct 17, 2026

Revenue

Estimated from the grossing charts of Oct 24, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / MONTH · WORLDWIDE
Unranked
Not in any grossing chart, and too few ratings (11) to read its growth. Most apps at this stage earn little or nothing.
LIFETIME INSTALLS (GOOGLE)
1.6K
About 12 per month on average since launch
RATINGS
n/a
AVG RATING
n/a
PRICE
¥112
IN APP PURCHASES
No
CONTAINS ADS
No
LAST UPDATE
430d ago
RELEASED
Feb 9, 2016
CONTENT RATING
Rated for 3+

Last 30 days

From our daily snapshots of every grossing chart.

DAYS IN A GROSSING CHART
0 / 30
COUNTRIES NOW
0 (was 0)
EST. REVENUE FROM CHARTS, DAILY · BOTH STORES ONLY EST
Show daily values
Sep 25, 2026not in a grossing chart
Sep 26, 2026not in a grossing chart
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Sep 28, 2026not in a grossing chart
Sep 29, 2026not in a grossing chart
Sep 30, 2026not in a grossing chart
Oct 1, 2026not in a grossing chart
Oct 2, 2026not in a grossing chart
Oct 3, 2026not in a grossing chart
Oct 4, 2026not in a grossing chart
Oct 5, 2026not in a grossing chart
Oct 6, 2026not in a grossing chart
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Oct 9, 2026not in a grossing chart
Oct 10, 2026not in a grossing chart
Oct 11, 2026not in a grossing chart
Oct 12, 2026not in a grossing chart
Oct 13, 2026not in a grossing chart
Oct 14, 2026not in a grossing chart
Oct 15, 2026not in a grossing chart
Oct 16, 2026not in a grossing chart
Oct 17, 2026not in a grossing chart
Oct 18, 2026not in a grossing chart
Oct 19, 2026not in a grossing chart
Oct 20, 2026not in a grossing chart
Oct 21, 2026not in a grossing chart
Oct 22, 2026not in a grossing chart
Oct 23, 2026not in a grossing chart
Oct 24, 2026not in a grossing chart
Best rank Sep 25, 2026: not ranked. Now: not ranked. Days at zero are days outside every grossing chart.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
No in-app purchases
Earns from its upfront price, ads or payments outside the store.
REVIEW MOMENTUM
Too few reviews
Fewer than 3 recent written reviews in this country.

What users say

Latest reviews, Japan Google Play.

★★★★★Sep 9, 2021

This is a great app. Very useful.

★★★★★Mar 5, 2016

Challenging and hard to stop playing. Every try in different, the challenge is infinite!

Store screenshots

ScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshotScreenshot

App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

Apple's ad repository couldn't be reached right now. Try again later.

Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title or short description.

grid40concentration grid14grid exercise11concentration11exercise9performance7rows columns6grid completed6focus6mental5challenge5rows5columns5under5mental focus5focus concentration5columns rows5grids4coaches4complete4time4completed4times4exercise mental3

What's new in 1.0

Update for new OS

Store description

The Concentration Grid app is based on the mental focus grid exercise. Mental focus grids have long been used as a tool by coaches and sports performance/psychology professionals to assess and improve performance of their athletes. The objective of the grid exercise is to select in sequence each of the numbers (randomly arranged and presented) in the grid. Performance is timed. The challenge is to complete the grid as quickly as possible. The exercise calls for focus and concentration. The grid exercise has been a long-time favorite of many baseball/softball coaches and players (typically using paper sheets, a pen and a stopwatch). Coaches/sports performance staff and athletes now can do their mental skills training work (and save paper) by using the Concentration Grid app on their mobile device. The Concentration Grid app is intended to provide competitive challenge and a fun/entertaining experience that is simple and straightforward ... like the printed paper grid exercise - but more convenient. With the Concentration Grid app the level and nature of the challenge can be varied by changing the size of the grid - by selecting the number of rows and columns for the grid. Grids can be generated in a variety of sizes - from 3 columns/rows to 14 columns/rows. (A grid does not have to have the same number of rows and columns.) More rows/columns, more numbers. More numbers, more time. Try a 3x3 grid ... a 3x14 grid ... a 7x7 grid ... a 5x10 grid ... a 7x10 grid ... a 10x10 grid .... a 10x12 grid ... a 14x14 grid. You get the idea. The standard is a 10x10 grid - which a focused grid master should be able to complete in under 4 minutes. Other benchmarks ... A 3x3 grid can be completed in about 3 seconds. A 5x5 grid might be completed in under 15 seconds. A 7x7 grid can be completed by a master in well under a minute. A 9x9 grid might be completed in 3 minutes. Can you complete a 6x6 grid in under 30 seconds? Smaller grids will call for dexterity and quick vision as well as focus/concentration. Larger grids will challenge your ability to sustain focus/concentration ... your mental stamina is put to the test. Challenge yourself with the Concentration Grid app. Track and measure your improvement as you practice. Then compare your best grid times against teammates and others (against benchmark times and on the leaderboards on the community website www.concentrationgrid.net) ... who is the fastest? Who is a master of the grid? (Coaches and teachers can set up intrasquad competitions/tournaments to find out.) Practice makes perfect. Sustained attention and effort are rewarded with improved performance/times in the grid exercise. The grid exercise can be practiced in quiet places ... or under loud/distracting (game day) conditions. In a world filled with distractions, use Concentration Grid to practice/exercise mental focus skills. The Concentration Grid app will provide your grid time (elapsed time to complete the grid exercise) as well as a GRID ID data set that includes additional information about your performance. The app will also maintain a history/file for you to monitor your performance/improvement. The Concentration Grid app includes a SHARE feature which will allow you to share/post your grid times and screenshots on social media and to the leaderboards (at www.concentrationgrid.net ... community site). Make self-development a daily habit.

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Prices, ranks and reviews are per country. Revenue above is already worldwide.