Comparison

Stroop Test J Lite vs Hacaro

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Stroop Test J Lite

This app measures response inhibition and attention by presenting a classic cognitive test. It helps assess potential frontal lobe dysfunction and interference processing. Results indicate time taken and errors, with higher scores suggesting greater impairment.

Highlights
  • Response inhibition assessment
  • Attention division test
  • Measures time to complete
  • Counts mistakes
  • Interference processing evaluation
Features
Read full description

The Stroop test is used primarily to assess an individual's impaired response inhibition due to frontal lobe dysfunction, problems with simultaneous interference, and ability to divide attention. Test instruction: Respondents are required to touch the words according to the instructions. At first, measure normal scores then measure Strooped (color interfered) scores. Results: Results are reported as the number of seconds required to complete the task and number of mistakes; therefore, higher scores reveal greater impairment. A rough standard: Score is depends on age or gender however most in 50% longer time and less than 10mistakes.

About

Hacaro

Features
Read full description

– Description The Stroop Test is widely known as a cognitive task related to attention and decision-making, and it is thought to be associated with brain functions such as the frontal lobe and the anterior cingulate cortex. This app provides two types of tasks. In the first task, you are asked to identify the colors red, blue, green, and yellow as accurately and quickly as possible (Color Naming Task). In the second task, even when the meaning of the word and the color of the ink do not match, you are asked to answer based on the ink color, not the word itself (Incongruent Color Naming Task). It is known that responses tend to be slower when the color information and the word meaning are inconsistent compared to when they match. This phenomenon is called the Stroop Effect. This is thought to occur because the processes of recognizing colors and reading words work simultaneously and interfere with each other, which increases the time required for information processing. Each task consists of 20 questions, and after completion, the number of correct answers and the elapsed time will be displayed. The task display language is available in 11 different languages. – Data Sharing Past records can be saved to your device in CSV format or shared with other apps, such as by sending them via email. – Selecting a Mode When Starting the App When launching the app, you can choose from three modes: 1: Hacaro Series Account Mode By logging in with a user account, all past data can be stored securely in the cloud. Even if you change devices, you can access and share your data by logging in with the same account. For more details, please tap β€œLearn more about the Hacaro Series Account” on the app’s home screen. 2: Guest Mode Up to 30 records are stored locally on the device. Older records will be deleted automatically as new data is added. Even if you log in using another mode later, the 30 guest records will remain stored on the device. 3: Researcher Mode Records are managed using a Subject ID rather than age or gender. At the start of each session, a subject ID selection screen will appear. As with Guest Mode, up to 30 records can be stored.

Screenshots

Stroop Test J Lite1 screens
Hacaro4 screens

Verdict

The call

The clearest difference is ads: Hacaro at none against Stroop Test J Lite's shown. Hacaro also leads on update cadence (every 4 months vs every 36 months) and device support (3 vs 1). On price and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Stroop Test J Lite ships an update every 36 months, Hacaro every 4 months. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

Scorecard4 real differences Β· 4 level
Stroop Test J Lite versus Hacaro: the parameters behind the verdict, then further details
ParameterStroop Test J LiteHacaro
PriceFreeFree
Positive reviews0.0% of reviewsβ€”
Update frequencyEvery 36 monthsEvery 4 months β€” better
AdsYesNo β€” better
In-app purchasesNoNo
MonetizationAd-supportedβ€”
DevicesiPhoneiPhone, iPad, iPod β€” better
Requires iOS17.615.0 β€” better
Further details β€” not scored
Size4 MB117 MB
Age rating4+12+
DeveloperTakuya KawakamiDIGITAL STANDARD CO., LTD.

In-app purchases

None

Stroop Test J Lite

No in-app purchases

None

Hacaro

No in-app purchases

Questions

Is Stroop Test J Lite free?
Stroop Test J Lite is free to download, with no in-app purchases.
Is Hacaro free?
Hacaro is free to download, with no in-app purchases.
Do Stroop Test J Lite or Hacaro have ads?
Stroop Test J Lite shows ads; Hacaro does not.
Which is updated more often, Stroop Test J Lite or Hacaro?
Stroop Test J Lite ships an update every 36 months, and Hacaro every 4 months. Most recently, Stroop Test J Lite was updated on October 14, 2026 and Hacaro on October 5, 2026.

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