Comparison

iStroopChallenge vs Inkstroop

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

Inkstroop

Features
Read full description

Hue Rush is a neon reflex puzzle built around one cruel, beautiful trick: the word lies, the color tells the truth. Read the ink, not the word. Tap fast. Chain combos. Survive sixty seconds. Every prompt flashes a color word painted in a different shade. Find the tile whose FILL matches the INK COLOR of the word—not whatever the word says. Sounds easy. Feels easy. Then your brain trips, your thumb hesitates, and a hot streak turns into a wipeout. WHY YOU'LL KEEP RESTARTING • 60-second adrenaline rounds—one more try, always • Speed-tap scoring: faster answers stack bigger points • Combo system that builds into Neon Pulse (x1.5 score for 5 seconds) • Mistakes hurt: wrong tap drops your combo and shaves time • Expanding palette—pass 200 points and four new colors join the deck DESIGNED FOR FOCUS • Pure one-thumb play, portrait, no clutter • Synesthetic neon aesthetic with deep magenta-to-cyan gradients • Subtle haptics and crisp audio on every tap • Smooth 120Hz animations that never get in your way PERFECT FOR • Stroop-effect fans and reaction junkies • Commute breaks, queue waits, between matches • Anyone who likes their brain a little bit roasted • Score-chasers grinding for that personal best NO PAYWALLS, NO TIMERS Hue Rush is free to play, end to end. Optional Remove Ads is a one-time tip if you love the game. Train your eyes. Beat your brain. Read the color, not the word.

Screenshots

iStroopChallenge4 screens
Inkstroop4 screens

Verdict

The call

The clearest difference is ads: iStroopChallenge at none against Inkstroop's shown. iStroopChallenge also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Inkstroop's advantage is update cadence (every 3 days vs every 6 days). On price 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

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, Inkstroop every 3 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 6 level
iStroopChallenge versus Inkstroop: the parameters behind the verdict, then further details
ParameteriStroopChallengeInkstroop
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 daysEvery 3 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size29 MB5 MB
Age rating4+4+
DeveloperSteve HungerBIN WANG

In-app purchases

None

iStroopChallenge

No in-app purchases

None

Inkstroop

No in-app purchases

Questions

Is iStroopChallenge free?
iStroopChallenge is free to download, with no in-app purchases.
Is Inkstroop free?
Inkstroop is free to download, with no in-app purchases.
Do iStroopChallenge or Inkstroop have ads?
Inkstroop shows ads; iStroopChallenge does not.
Which is updated more often, iStroopChallenge or Inkstroop?
iStroopChallenge ships an update every 6 days, and Inkstroop every 3 days. Most recently, iStroopChallenge was updated on November 5, 2026 and Inkstroop on November 10, 2026.

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