Comparison

Nuddle vs Sequence Master Challenge

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

Head to head
About

Nuddle

Engage your mind with daily number sequence puzzles. Discover the underlying system to find the missing digits and build your solving streak. Enjoy unlimited random puzzles and share challenges with friends.

Highlights
  • Daily global number puzzles
  • Infinite random sequences
  • Streak building system
  • Local puzzle caching
  • Share puzzles with friends
  • Recognize number systems
Features
Read full description

Solve number sequences and daily number puzzles in short, focused brain breaks. Spot patterns in number sequences, solve the Daily Nuddle, and keep your streak alive. When you want more, jump into quick mental-math rounds, pattern sprints, memory challenges, Code Recall, and Number Matrix. Nuddle is not a traditional exam-prep app. But if you want training for MedAT or other admission tests on the go, it can help you practice faster pattern recognition, focused number work, and memory in short sessions. Each puzzle is short enough for any spare moment, but clever enough to feel satisfying when the rule clicks. No long instructions, no puzzle clutter: Nuddle shows you numbers, you find the system. What you get: - Logic: Sequences, Sequence Challenge, Number Matrix, Emoji Equations, Dice Fold - Speed: Quick Math, Pattern Sprint, Number Rush, Odd One Out, True or False, Path to Target, Gravity Shift - Memory: Target Recall, Code Recall, Count Recall, Path Recall, Match Math - Casual: Four in a Row, Tower of Hanoi, Merge, Nonogram - Admission-test training on the go - Local progress, streaks, and best scores - Light and dark design - Offline play whenever you want a quick brain break Nuddle is for anyone who likes number puzzles, logic games, mental math, patterns, and small daily challenges. Download Nuddle and find the next two numbers. Nuddle is free to download and includes the Daily Nuddle plus selected game modes at no cost. Nuddle Plus is available as an optional auto-renewable monthly or yearly subscription and unlocks all game modes while the subscription is active. Nuddle contains no ads. Payment is charged to your store account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your store account settings. You can try every locked game mode once for free before subscribing. Terms of Use (EULA): https://nuddle.schmutweiss.com/terms Privacy Policy: https://nuddle.schmutweiss.com/privacy

About

Sequence Master Challenge

Features
Read full description

Elevate your brainpower with Sequence Master — the comprehensive cognitive training and working memory app engineered to boost recall, focus, reflexes, and mental flexibility. Featuring 10 scientifically grounded training modes, Sequence Master adapts to your skill level while presenting an elegant dark forest aesthetic that makes daily brain training a joy. 10 DIVERSE GAME MODES • MEMORY MAZE [NEW IN 3.1]: A glowing path traces across the labyrinth and disappears. Memorize the route and navigate step-by-step to the exit! • STROOP ILLUSION: Tap the ink color while suppressing the reading reflex. A gold-standard neuropsychological challenge of inhibitory control. • CHIMPANZEE MEMORY TEST & AYUMU FLASH: Memorize numbers across the grid before they hide. Turn on Ayumu mode to test your photographic memory at 0.21-second speeds! • ADAPTIVE DUAL N-BACK: Track spatial locations and audio tones simultaneously. The adaptive engine automatically raises N as your accuracy exceeds 80%. • COLORS: Watch the grid flash and reproduce the sequence with precision. • NUMBERS: Numbered tiles appear briefly across the grid. Recall and tap them in ascending order. • REVERSE: Exercise executive memory by repeating sequences backwards. • SPEED: Pure reaction time — strike flashing targets before the timer runs out. • CONSTANTS (π, e, φ, √2): Memorize the decimals of mathematical constants with an interactive reference library and mistake heatmap. • 2-PLAYER SPLIT-SCREEN DUELS: Play on the same device! Challenge a friend across 5 head-to-head duel modes. COGNITIVE PROFILE & BRAIN AGE • 5-Axis Radar Chart analyzing Working Memory, Reaction Speed, Inhibitory Control, Precision, and Spatial Recall. • Estimated Brain Age calibrated against your scores across categories. • Cognitive Trends powered by Swift Charts to visualize long-term improvement. DAILY CHALLENGES & GAMIFICATION • Fresh daily challenge every day generated with a shared seed. • Monthly Badges (Bronze 7-day, Silver 15-day, Gold 25-day). • 26 unlockable achievements, XP progression, and player levels. • Streak freeze protection so you never lose your progress. SEAMLESS APPLE INTEGRATION & PRIVACY • Apple Game Center leaderboards and achievements. • iCloud Key-Value Sync across all your iOS devices. • Rich haptics and dynamic background music ducking. • Privacy-first: Zero data tracking, zero third-party ads, all data stays with you. ---

Screenshots

Nuddle4 screens
Sequence Master Challenge4 screens

Verdict

The call

The clearest difference is in-app purchases: Sequence Master Challenge at none against Nuddle's 1. Nuddle's advantage is iOS requirement (13.0 vs 18.0). On price, update cadence, ads 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. Nuddle sells 1 one-off in-app purchase. Sequence Master Challenge asks for nothing beyond the download.

UpkeepUpdate frequency

Nuddle ships an update weekly, Sequence Master Challenge every 4 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 8 level
Nuddle versus Sequence Master Challenge: the parameters behind the verdict, then further details
ParameterNuddleSequence Master Challenge
PriceFreeFree
Rating4.9 (8 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings8 — better—
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size42 MB10 MB
Age rating4+4+
DeveloperSCHMUT WEISS GmbHHAKON FOSEIDE

In-app purchases

1 purchases

Nuddle

One-time1
  • Remove ads$4.99
None

Sequence Master Challenge

No in-app purchases

Questions

Is Nuddle free?
Nuddle is free to download, with in-app purchases available.
Is Sequence Master Challenge free?
Sequence Master Challenge is free to download, with no in-app purchases.
Do Nuddle or Sequence Master Challenge have ads?
Neither Nuddle nor Sequence Master Challenge shows ads.
Which is updated more often, Nuddle or Sequence Master Challenge?
Nuddle ships an update weekly, and Sequence Master Challenge every 4 days. Most recently, Nuddle was updated on October 2, 2026 and Sequence Master Challenge on September 30, 2026.

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