Comparison

Not Evil Sudoku vs Reflex Royale

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

Head to head
About

Not Evil Sudoku

Enjoy a distraction-free Sudoku experience with helpful features like hints and real-time validation. Track your progress, compete globally, and customize the app with themes. Play daily puzzles for free or upgrade for unlimited games and advanced statistics.

Highlights
  • Fully offline play
  • No ads or distractions
  • Real-time move validation
  • Shake for hints
  • Daily puzzles with leaderboards
  • Customizable themes and icons
  • Notes and auto-clear notes
Features
Read full description

A joyful sudoku-solving experience built natively for iPhone and iPad and optimized for a zen solving experience free from bloat and distraction. Designed to be easy to play and meet you where ever you are in your sudoku journey: a casual solver or a sudoku pro. Stuck on a puzzle? Shake your phone for hints and turn on move by move validation in settings to get immediate feedback on your solve. Tickle your brain as you learn new solving strategies and customize the app to your taste with themes and alternate app icons. Play a daily puzzle at a difficulty of your choice and see where you stack up with players across the globe. Or just turn off the stopwatch and relax. Key features: - Fully offline: no internet required - No ads or distractions - Real-time move validation to get immediate feedback - Shake for a hint on the next logical move - Leaderboards with assist tracking - Easy, Medium, and Hard difficulty levels - Light/Dark mode - Stopwatch and best time tracking - Notes: Keep track of candidates - Auto-clear Notes: removes candidate numbers automatically in row, column, and box when they become outdated - Speed demon: Lock numbers and place them in multiple tiles at once - Arithmophobia: Sudoku with letters instead of numbers - Daily streak tracking - Daily reminder notifications - Highlighter: tap a number to highlight all its instances on the board - Themes to customize the interface (some require Pro) - Alternate app icons (Pro) - Charts and statistics (Pro): track solve speed over time and puzzle count by difficulty Play the daily puzzle at your preferred difficulty for free without any limits on assists or game features. Upgrade to Pro with a one-time purchase to unlock unlimited games, detailed stats, more themes, and alternate app icons. Pro supports Family Sharing.

About

Reflex Royale

This is an offline reaction time game designed for quick, engaging multiplayer sessions. Players test their reflexes by holding and releasing their finger on screen at the precise moment a specific shape reappears. It's perfect for passing time with friends or breaking the ice with new people.

Highlights
  • Offline play
  • Multiplayer for any number of players
  • Quick 60-second rounds
  • Simple press-and-hold mechanic
  • Icebreaker for groups
  • Single-player mode
Features
Read full description

Reflex Royale is an offline reaction time game for any number of players. Each game takes about 60 seconds and you can play over and over again. I made this game to pass the time with friends or break the ice with strangers. You can play with a partner, by yourself, or challenge the whole room. Just press and hold on the screen to join in! Keep your finger down until the same shape comes back, then release it right away. The player who lifts their finger first wins! You’ll lose if you lift your finger too early, or if you lift it for the wrong shape! That’s Reflex Royale – give it a shot! I guarantee you’ll have fun.

Screenshots

Not Evil Sudoku4 screens
Reflex Royale4 screens

Verdict

The call

The clearest difference is in-app purchases: Reflex Royale at none against Not Evil Sudoku's 1. Reflex Royale also leads on rating (5.0 vs 4.6) and iOS requirement (12.0 vs 15). Not Evil Sudoku's advantage is update cadence (every 9 days vs every 6 months) and ratings volume (1.1K vs 3). On price, 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. Not Evil Sudoku sells 1 one-off in-app purchase. Reflex Royale asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Reflex Royale holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Not Evil Sudoku has 1.1K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Not Evil Sudoku ships an update every 9 days, Reflex Royale every 6 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Not Evil Sudoku versus Reflex Royale: the parameters behind the verdict, then further details
ParameterNot Evil SudokuReflex Royale
PriceFreeFree
Rating4.6 (1.1K ratings)5.0 (3 ratings) — better
Positive reviews74.7% of reviews—
Number of ratings1.1K — better3
Update frequencyEvery 9 days — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1512.0 — better
Further details — not scored
Size23 MB103 MB
Age rating4+4+
DeveloperAshish SelvarajAustin Anderson

Customer experience

Not Evil Sudoku

All ratings983 ratings
Positive88.6%
Neutral3.1%
Negative8.3%
Written reviews241 reviews
Positive74.7%
Neutral5.8%
Negative19.5%

Reflex Royale

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Not Evil Sudoku

Reported bugs

2 issues
  • Disappearing numbers when closing the app
  • Numbers swapping to incorrect spots

Requested features

6 requests
  • Add auto-clear notes option without move validation
  • Provide more theme color options
  • Implement a 'warm' mode similar to other sudoku apps
  • Add ability to remove notes after number is placed
  • Highlight all instances of a number in the puzzle
Show 1 more
  • Remove a number as a choice when it has been placed successfully

Reflex Royale

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Not Evil Sudoku

One-time1
  • Pro$4.99
None

Reflex Royale

No in-app purchases

Questions

Is Not Evil Sudoku free?
Not Evil Sudoku is free to download, with in-app purchases available.
Is Reflex Royale free?
Reflex Royale is free to download, with no in-app purchases.
Which has better reviews, Not Evil Sudoku or Reflex Royale?
Reflex Royale is rated higher. Not Evil Sudoku averages 4.6 out of 5 from 1.1K ratings, while Reflex Royale averages 5.0 from 3 ratings.
Do Not Evil Sudoku or Reflex Royale have ads?
Neither Not Evil Sudoku nor Reflex Royale shows ads.
Which is updated more often, Not Evil Sudoku or Reflex Royale?
Not Evil Sudoku ships an update every 9 days, and Reflex Royale every 6 months. Most recently, Not Evil Sudoku was updated on October 27, 2026 and Reflex Royale on October 24, 2026.

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