Comparison

iStroopChallenge vs Stroopy

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

Head to head
About

iStroopChallenge

Engage your brain with four distinct focus challenges, including the classic Stroop test. Improve self-control, flexibility, memory, and spatial skills through daily puzzles and various game modes. Compete with friends and track your progress with detailed statistics.

Highlights
  • Classic Stroop test
  • Four distinct focus challenges
  • Daily puzzles with streaks
  • Customizable game modes
  • Friend challenges and leaderboards
  • Color blind modes
  • Detailed progress tracking
Features
Read full description

STROOP CHALLENGE – Four brain challenges, a new puzzle every day It starts with the classic Stroop test: tap the INK COLOR of each word, not what the word says. When "RED" appears in blue ink, your brain wants to read the word, and resisting that pull is the challenge. Version 2 adds three more challenges, each testing a different kind of focus: • STROOP – Tap the ink color, not the word. • FLANKER – Swipe the way the middle arrow points while the arrows around it point the other way. • GO / NO-GO – Tap fast on GO, and hold back on STOP. • SIMON EFFECT – Red means left and blue means right, even when the color shows up on the wrong side. TWO DAILY PUZZLES • Daily Stroop – The same words for everyone, every day. • Daily Mix – Three quick rounds of different challenges, new each day. Each daily keeps its own streak, with streak freezes that save a missed day. Look back on every result in the history calendar, and share your score as a grid of colored squares. YOUR BRAIN SCORE One number from 0 to 1000, built from your speed and accuracy across every challenge, with a breakdown by skill: self-control, flexibility, memory and spatial. PLAY YOUR WAY • Timed, Bonus Time and Endless modes • Easy, Normal and Hard, plus difficulty that adapts as you play • A best score for every challenge CHALLENGE YOUR FRIENDS • Send a challenge code so a friend plays the exact same game • Game Center leaderboards and achievements MADE FOR EVERYONE • Color blind modes for red-green and blue-yellow color blindness, with colors you can tell apart and a shape on every button • VoiceOver support and large text • Respects Reduce Motion • 5 color themes Plus a home screen widget, daily reminders and detailed stats with progress charts.

About

Stroopy

Features
Read full description

Stroopy is a challenging puzzle game inspired by the famous Stroop effect from psychology. Test and improve your cognitive flexibility, focus, and reaction time through short, engaging challenges designed to push your brain to its limits. Features: • Brain-training puzzles based on the Stroop effect • Improve attention, focus, and reaction speed • Simple design, challenging gameplay • Ideal for short daily training sessions Can you stay focused when colors and words don’t match?

Screenshots

iStroopChallenge4 screens
Stroopy3 screens

Verdict

The call

The clearest difference is ads: iStroopChallenge at none against Stroopy's shown. iStroopChallenge also leads on update cadence (every 6 days vs every 3 months). Stroopy's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

iStroopChallenge ships an update every 6 days, Stroopy every 3 months. Both last shipped on November 5, 2026.

Scorecard3 real differences · 7 level
iStroopChallenge versus Stroopy: the parameters behind the verdict, then further details
ParameteriStroopChallengeStroopy
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 days — betterEvery 3 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size29 MB28 MB
Age rating4+4+
DeveloperSteve HungerOLE WebDesign

In-app purchases

None

iStroopChallenge

No in-app purchases

None

Stroopy

No in-app purchases

Questions

Is iStroopChallenge free?
iStroopChallenge is free to download, with no in-app purchases.
Is Stroopy free?
Stroopy is free to download, with no in-app purchases.
Do iStroopChallenge or Stroopy have ads?
Stroopy shows ads; iStroopChallenge does not.
Which is updated more often, iStroopChallenge or Stroopy?
iStroopChallenge ships an update every 6 days, and Stroopy every 3 months. Most recently, iStroopChallenge was updated on November 5, 2026 and Stroopy on November 5, 2026.

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