Concentration Grid icon

STALWART GROUP

For student-athletes, coaches, and sports performance professionals seeking structured attention-skill exercises.

1app4.3(7)Games

Snapshot

Who is STALWART GROUP?

Providing athletes and coaches with digital mental skills training tools to improve focus and attention through grid-based exercises.

Target audience

Student-athletesCoachesSports performance professionals seeking structured attention-skill exercises

Active nemesis

珠峰 徐

Other rivals

Portfolio

1
app
Games1

Last updated

Concentration Grid

v2.2

3.5y ago

Dormant

Publisher DNA

What defines STALWART GROUP?

Publisher DNA

Primary focus

Mental skills training for sports performance

Scale

indie

Target audience

Student-athletes, coaches, and sports performance professionals seeking structured attention-skill exercises.

Origin

Developed as a digital implementation of the mental focus grid exercise used by sports performance professionals.

Signature Patterns

  • •Single-purpose utility focus on mental focus grids
  • •Monetization via a one-time paid purchase model
  • •Integration of performance tracking and history for assessment purposes
Dormant

Portfolio momentum

The publisher has released 0 updates in the last 6 months, with its sole title last updated in June 2023.

Active apps 0Abandoned 1

Portfolio

What does STALWART GROUP ship?

Apps

1 app analysed

Single-market publisher, every app ships only to United States.

Based on 1 of 1 app with localized market data · last scanned .

Americas (1)

  • United States1 / 1

Core markets (1/1 apps)

United States

Rivals

Who does STALWART GROUP compete with?

The rivals identified

Nemeses(1)

珠峰 徐

known forSchulte Grid-Attention Trainer

1 app5.0Games

Both applications provide digital grid-based mental focus training, targeting users who want to improve concentration through timed exercises.

Contenders(3)

Ihor Filippov

known forFocus Friend: Cognitive Games

1 app0.0Games

Both apps compete for the same daily mental focus training habit, targeting users who want to improve attention and cognitive performance.

James Gray

known forAttention Age: Focus Test

1 app0.0Games

Both apps target users seeking to improve mental focus through timed drills, competing for the same time-constrained daily training slot.

RulTech Solutions Private

known forReflex-Game

1 app0.0Games

Reflex-Game competes by offering a number-selection grid mechanic for cognitive training, overlapping with the core exercise provided by Concentration Grid.

Same space(20)

6715 Apps

known forAttenza - Attention & Focus

1 app3.8Games

Positions itself as an attention gym, directly competing with the source app's focus on mental stamina.

BrainCo

known forFocusCalm - Brain Training

2 apps3.9Games

Uses neurofeedback to train focus, offering a clinical alternative to the source app's manual grid drill.

CONTENT ARCADE (UK)

known forBrain Test Puzzle : IQ Games

1 app4.5Games

Targets the same cognitive skill improvement as the source app through a collection of mind games.

CRAZYSLOTH PTE

known forFree Brain Training Games

1 app4.7Games

Offers a similar suite of cognitive exercises but removes the paywall barrier present in the source app.

Deep Flow Apps

known forIQ Masters - Brain Games

1 app4.2Games

Combines cognitive training with mental health screeners, expanding beyond the source app's focus on athletic performance.

Elektron Labs

known forMindPal - Brain Training Games

1 app4.7Games

Offers daily mental workouts similar to the source app but relies on a broader, science-based program.

Gavel-It

known forSportrix

1 app4.6Games

Uses a grid-based matrix format for sports knowledge, creating a thematic overlap with the source app's grid interface.

Gregory Roll

known forFocus - Brain & Memory Games

1 appGames

Provides a gym-like experience for cognitive health, competing for the same daily mental training audience.

James ST. Yan

known forBrain Sharp: Brain Training

1 appGames

Provides cognitive training games that target the same mental speed and focus as the source app.

Koshenka Labs

known forFocus Training by Targaze

1 app4.9Games

Targets visual focus through meditation, offering a different modality for the same concentration goal.

Lumos Labs

known forLumosity: Brain Training Games

1 app4.8Games

Shares the focus on neuropsychological tasks but scales the experience through a massive library of games.

Masaharu Tsukamoto

known forReaction time trainer :RS

1 app4.5Games

Targets athletic performance through rapid target tapping, sharing the source app's focus on speed and reaction.

Mindware Consulting

known forMind Games - Brain Training

1 app4.6Games

Uses standardized testing principles to provide cognitive challenges similar to the source app's grid exercise.

Neil Rohan

known forConcentration - Old School

1 app4.7Games

Uses a grid-based memory matching format that shares the source app's grid aesthetic.

Olena Gotsulyak

known forConcentration training.

1 app4.7Games

Directly targets concentration and productivity through exercises that mirror the source app's core utility.

Perform Labs

known forPerform: Mental Game Training

1 app5.0Games

Targets competitive athletes with mental training rituals, aligning with the source app's sports performance audience.

Synaptic Labs

known forPeak - Brain Training

1 app4.7Games

Provides a broader cognitive training library that competes for the same daily habit time as the source app.

Synaptikon

known forNeuroNation - Brain Training

1 app4.6Games

Focuses on memory and cognitive speed through adaptive exercises that mirror the source app's performance-tracking goals.

The Mind Company

known forElevate - Brain Training Games

1 app4.8Games

Targets the same cognitive improvement goal but uses adaptive algorithms rather than static sports drills.

瑞锋 于

known forTouch Number - match games

1 app4.5Games

Uses a number-tapping mechanic identical to the source app's core grid exercise.

New entrants(2)

Brodog

known forClutch Mental Training

1 app5.0Games

Focuses on mental performance for athletes, providing a training-based approach to pressure management.

conner Coy

known forMind Games: Mental Training

1 app5.0Games

Provides mental tools for athletes, sharing the source app's focus on performance under pressure.

The Analyst's Read

The bottom line on STALWART GROUP

Bottom line

Stalwart Group provides a highly specialized utility for the sports performance niche, but the lack of recent updates suggests the product is in a legacy maintenance phase rather than active growth.

Frequently asked questions

How many apps does STALWART GROUP publish?
STALWART GROUP has 1 app tracked by Marlvel, primarily in the Games category.
What kind of apps does STALWART GROUP make?
STALWART GROUP's portfolio is concentrated in Games, with an average rating of 4.3/5 across rated apps.
What is STALWART GROUP's top app?
By review volume across the portfolio, Concentration Grid is STALWART GROUP's best-known app tracked by Marlvel.
In how many countries are STALWART GROUP's apps available?
Marlvel has tracked STALWART GROUP's apps across 1 country.

What fed this analysis

Apps analyzed:
1
With full intel:
0
With overview:
1
Website scraped:
yes
Social presence:
yes

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by STALWART GROUP, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “STALWART GROUP intelligence.” Updated 2026-04-28. https://marlvel.ai/publishers/stalwart-group-llc

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Data licensed under CC-BY-NC 4.0