Comparison

Hands vs C2 Stroop Task

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

Head to head
About

Hands

This app offers an interactive way to learn math concepts like set theory, geometry, and logic. It features 8 levels of difficulty, presenting students with challenges to solve using attribute blocks and logical reasoning. It's designed to improve basic math skills and logical thinking for elementary students.

Highlights
  • Interactive math concept learning
  • Set theory, geometry, number theory, logic
  • 8 levels of difficulty
  • Logical problem-solving challenges
  • Venn diagram exercises
  • Shape and pattern recognition
Features
Read full description

Hands-On Math Attribute Blocks provides an interactive learning environment for learning and enhancing mathematical concepts related to set theory, geometry, number theory, and logical thinking. It is a perfect classroom tool for core mathematics instruction and enrichment. While using this app students will use mathematical thinking skills to solve randomly generated problems. Students will find the challenges solvable through interaction. The skills learned are relevant to the elementary mathematics curriculum. Encourage your students to try Hands-On Math Attribute Blocks, and as they do you will see them get better at many basic math skills. Attribute Blocks offers 8 levels of difficulty. Younger learners will benefit from the settings where the challenge is to place blocks and determine the logical rules for which blocks are accepted and which blocks are rejected. For older students teachers may want to use some of the options where the challenge is to find a missing rule for a pattern or Venn diagram. Targeted Mathematical Development in the Following Areas: Set Theory - Sets, subsets, negations, union, intersection and Venn diagrams Geometry - Names and properties of shapes Number Theory - Sequences and patterns Logic and Reasoning - Solving logical problems using the scientific method, deductive reasoning Levels: Level 1: Shapes and Colors - Getting Familiar with Attribute Blocks Level 2: Classifying Shapes - Recognizing Similar Attributes Level 3: Classifying Shapes using Two Attributes - Recognizing Similarities and Differences Level 4: Logicial Patterns - Recognizing Differences to Develop a Pattern Level 5: 2 x 2 - Logical Problem Solving based on Attributes and Differences Level 6: 3 x 3 - Logical Problem Solving based on Attributes and Differences Level 7: Venn Diagram - Logical Relationships (Two Attributes) Level 8: Venn Diagram - Logical Relationships (Three Attributes)

About

C2 Stroop Task

Features
Read full description

The iOS app "C2 Stroop Task" is intended for those who are interested in cognitive psychology, those who are learning cognitive psychology, and those who are researching it. * The effect of the Stroop task appears as a difference in time to perceive text color in the following two cases, for example. ・text color = red, text = "red" (compatible) ・text color = red, text = "green" (incompatible) This app allows you to see the Stroop effect numerically. The iOS app "C2 Stroop Task" records the response time of a stroop task (task conflict) in milliseconds. Response time is the time from when the task is displayed to when the answer button is touched (touchdown). The recorded data can be output to a CSV file and read into a spreadsheet application such as Excel. Language settings can be made by editing the words for each color, so any language that can be entered from the keyboard can be set. You can set the intertrial interval, number of tasks, compatibility rate, color selection, position, size, background color, whether to shuffle the answer buttons, etc. [details] https://app.brain-workout.org/strooptask-e/

Screenshots

C2 Stroop Task4 screens

Verdict

The call

The clearest difference is update cadence: C2 Stroop Task at every 10 months against Hands's every 27 months. C2 Stroop Task also leads on device support (3 vs 1). Hands's advantage is price ($2.99 vs $3.99) and iOS requirement (12.0 vs 15.6). On ads and in-app purchases 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

Hands costs $2.99 and C2 Stroop Task $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Hands ships an update every 27 months, C2 Stroop Task every 10 months. The most recent releases landed on June 2, 2026 and September 24, 2026 respectively.

Scorecard4 real differences · 5 level
Hands versus C2 Stroop Task: the parameters behind the verdict, then further details
ParameterHandsC2 Stroop Task
Price$2.99 — better$3.99
Rating2.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 27 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better15.6
Further details — not scored
Size13 MB1 MB
Age rating4+4+
DeveloperVentura Educational SystemsYasuyoshi Ota

In-app purchases

None

Hands

No in-app purchases

None

C2 Stroop Task

No in-app purchases

Questions

Is Hands free?
Hands costs $2.99, with no in-app purchases.
Is C2 Stroop Task free?
C2 Stroop Task costs $3.99, with no in-app purchases.
Do Hands or C2 Stroop Task have ads?
Neither Hands nor C2 Stroop Task shows ads.
Which is updated more often, Hands or C2 Stroop Task?
Hands ships an update every 27 months, and C2 Stroop Task every 10 months. Most recently, Hands was updated on June 2, 2026 and C2 Stroop Task on September 24, 2026.

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